What is the specific heat capacity of an unknown metal if 75.00 g of the metal absorbs 418.6J of heat and the temperature rises 25.0°C?

Answers

Answer 1

Answer:

The specific heat capacity of the unknown metal is 0.223 [tex]\frac{J}{g*C}[/tex]

Explanation:

Calorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.

There is a direct proportional relationship between heat and temperature. The constant of proportionality depends on the substance that constitutes the body as on its mass, and is the product of the specific heat by the mass of the body. So, the equation that allows calculating heat exchanges is:

Q = c * m * ΔT

where Q is the heat exchanged by a body of mass m, made up of a specific heat substance c and where ΔT is the temperature variation.

In this case, you know:

Q= 418.6 J c= ?  m= 75 g ΔT= 25 C

Replacing:

418.6 J= c* 75 g* 25 C

Solving:

[tex]c=\frac{418.6 J}{75 g*25 C}[/tex]

c= 0.223 [tex]\frac{J}{g*C}[/tex]

The specific heat capacity of the unknown metal is 0.223 [tex]\frac{J}{g*C}[/tex]


Related Questions

Hi all!

This is the 2nd one pls help me, its easy.....

Thanks

Answers

Answer:

7. Concave and convex mirrors are called spherical mirrors because they are both made from the sphere. The difference between the two (in the simplest terms) is that diminished images form in convex mirrors while enlarged images form in concave mirrors.

8. The word ambulance is written inverted on an ambulance is because when a driver is driving and sees an ambulance in their rearview mirror, they can see the word ambulance the correct way. Otherwise the word ambulance would be backwards in the mirror. Thats why they write it backwards.

9. A plane mirror forms the image, object, etc, the same exact size that it is. The mirror can be small or large the size of the image will stay the same. So the difference between the object in a small and large plane mirror is none, there is no difference.

10. Car rearview mirrors are curved. This is to give a wider viewing angle. Flat surface mirrors give an accurate reflection. since the rearview mirrors are not flat, they are curved, they are less accurate, so thats why they have a warning label.

11. The sun emits the color of white. And as we know the color white consists of all colors. We can test this by putting the sunlight through a prism. since different colors of light travels at different speeds in the glass we cand see the light 'bent' .

12. Solar cookers use concave mirrors. This is because the mirror reflects the sunlight to a focal, 'center,' point. This center point will eventually heat up very, very hot.

If you have any questions feel free to ask - mark

HELP PLEASE!!!!!
show work

Answers

I’m not sure how to show the work
You should download the app chem balance
It’s great for this kind of homework

If the Moon is in the position shown, what is the view from Earth?

Answers

Answer:

When the Moon is in the position shown below, how would the Moon look to an observer on the North Pole ... The moon's rotational period is equal to its revolutional period around Earth.

Explanation:

What is the mass of 0.25 moles of sulphur dioxide ​

Answers

Answer:

this is the answer okkkkkkkkkkkkkkkk

Is the following a physical or chemical change?
Electrolysis of water makes hydrogen and oxygen.
P.s. what is electrolysis?

Answers

Answer:

chemical change

Explanation:

electrolysis process by which electric current is passed through a substance to effect a chemical change.

A tank 20.0cm by 50.0cm by 30.0cm will hold how many liters of water?

Answers

Answer:

30,000 cm^3

Explanation:

volume for rectangular prism is v=l×w×h

plug in known values and solve.

v=(30.0cm)(20.0cm)(50.0cm)=30,000cm^3

Convert 15oc to K
(l’ll mark you as brainlister)

Answers

15+273.15=288.15K.......

Answer:

15oC to K

oC +273

15+273

288K

Magnesium hydroxide is 54.87% oxygen by mass.
How many grams of oxygen are in 175 g of the com-
pound? How many moles of oxygen is this?​

Answers

Answer:

hhmxui

Explanation:

Please help me on this.

Answers

Answer is Scandium hope this helps!

Hey. Answers to this?:
I set off on a journey from the Earth to our nearest galaxy - ________. It will take me around 2 million ______ ______ before I reach my destination. As my space shuttle ascended it went through the Earth’s atmosphere in a great display of glowing lights. I reached the _______ __________ zone and started to float in my cockpit. The spacecraft went farther away, making the Earth look much smaller. I saw the bright light of our ________ _________ - the Moon. I speeded up, crossing the orbit of our ________ _______ - Mars. It took a great deal of skill to safely manoeuvre my spacecraft through the area of giant, rocky pieces of cosmic rubble, known as an _____ ______. As I accelerated, I entered the region of our ________ _______. I went zooming past Jupiter, Saturn and ________. I took a glimpse of our poor demoted dwarf planet - _______. Eventually, I was far enough to reach the outer edges of our ______ _______, with our star _________ in the centre. From that point on I accelerated rapidly, zooming out of our galaxy - ________ _____. What a spectacular view it was to see all the ____ ______ stars spinning in a giant whirlpool of light. Soon I reached the outer edges of our galaxy and went zooming away through the unknown towards Andromeda.

Missing words: the Sun, natural satellite, Uranus, asteroid belt, the Milky Way, outer planets, light years, Pluto, 400 billion, the Andromeda, inner planet, Solar System, zero gravity,

Answers

Milky Way
Light years
Zero gravity
Natural satellite
Inner planets
Asteroid belt
Outer planets
Uranus
Pluto
Solar system
The sun
The andromeda
400 billion

Think this is correct

what is electron cloud?

Answers

It’s a group of electrons circulating around a nucleus or a molecule. It usually refers to the valence electrons Lewis structure

a.
1. You touch a shopping cart in the grocery store parking lot. What type of heat
transfer is happening between your hand and the handle?
Conduction
b. Convection
C. Radiation
d. Thermal Equilibrium

Answers

The answer is conduction

The transfer of energy between systems through work is the expansion of gas in a steam engine. By doing work or by transferring heat, energy can be transferred. Therefore, option A is correct option.

What is energy transfer?

Energy transfer is a phenomenon in which energy transfer from one matter to another matter. Energy requirement is necessary to move any object so work has to be done by the gas to the piston.

Heat can be transferred by three ways radiation, convention or conduction. In conduction, direct contact of two body is necessary for transfer of molecules. When we touch a shopping cart in the grocery store parking lot, then conduction is the process by which heat is transferred between our hand and the handle.

Therefore, the option A is correct option that is conduction.

Learn more about energy transfer, here:

https://brainly.com/question/18649915

#SPJ5

lithium reacts with bromine

Answers

2Li + Br2 → 2LiBr
Lithium react with bromine to produce lithium bromide. The reaction proceeds at room temperature.
:)

Which could cause topsoil to be lost?

wind and water erosion
lack of use
compaction
desertification

Answers

Answer: A. Wind and Water Erosion

Wind and Erosion lead to Washing away of top soil.

What Is Erosion?

Erosion is the process that lead to the washing away of top soil leading to loss of nutrient, holes and many more.

The agents of erosion include wind, water and so on.

Strong wind will lead to the top soil to be remove when it is blowing. Water also when is is flowing turbulently maybe when rain fall can lead to loss of top soil.

Therefore, Wind and Erosion lead to Washing away of top soil.

Learn more about Erosion from the link below.

https://brainly.com/question/17905503

What is the missing word. Please Help Me. Thank you!!
Before adding to the cell, aluminium oxide is mixed with _____________ to lower its melting point.

Answers

Calcium Floride (Caf2)
Hope this helped =D
mixed with CRYOLITE to lower its melting point

CH4 and CO₂ are the chemical formulas for:

Answers

Answer:

CH4 = Methane

CO2 = Carbon dioxide

Hope this Helps!!Hope this Helps!!:)

There are two types of chemical compound one is covalent compound and another is ionic compound in chemistry. In ionic bonds, electrons are completely transferred. Therefore, the name of CH[tex]_4[/tex]  and CO[tex]_2[/tex]  are Methane and Carbon dioxide respectively.

What is chemical Compound?

Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.

Covalent compounds are formed by covalent bond and ionic compounds are formed by ionic bond. Covalent bond is formed by sharing of electron and ionic bond are formed by complete transfer of electron. Ionic bonds are stronger than covalent bonds. The melting and boiling points are higher in ionic compounds.

chemical formula                                      Chemical name

CH[tex]_4[/tex]                                                           Methane

CO[tex]_2[/tex]                                                      Carbon dioxide

Therefore, the name of CH[tex]_4[/tex]  and CO[tex]_2[/tex]  are Methane and  Carbon dioxide respectively.

To learn more about chemical compound, here:

https://brainly.com/question/26487468

#SPJ2

SOMEBODY PLEASE HELP ME
Scenario
On Halloween, children prepared to go trick-or-treating with glow sticks. They prepared two glow sticks (“Glow Stick In” and “Glow Stick Out”) following the directions below. The light intensity was given a value of 10 for both Glow Stick In and Glow Stick Out. At 6:00, the children left Glow Stick In inside of the 25oC house and took Glow Stick Out outside in 10oC weather. At 8:00, they noticed the light intensity of Glow Stick Out at 10oC had decreased to 5. They immediately returned home and noticed the light intensity of Glow Stick In at 25oC had decreased to 7. At 9:00, both glow sticks were at 25oC. Glow Stick In had a light intensity of 6, and Glow Stick Out had a light intensity of 8.

Using at least two scientific principles, write a scientific explanation that includes evidence that justifies or describes the change in light intensity of both glow sticks. Please use claim evidence reasoning.

Answers

Answer:

look out for a bot with a link he will get yo ip

Explanation:

Answer: It will become solid again and the form of it will change, because when you heat up something you add energy to it. The particles move further and further apart.  

Explanation:

How do nuclear reactions
produce energy?

Answers

nuclear energy originates from the splitting of urinal atoms a process called fish and degeneracy to produce steam which is used by a turbine generator to generate electricity.


What do we know about the arrangement of atoms during a chemical reaction?

Answers

Answer: In a chemical reaction, the atoms and molecules that interact with each other are called reactants. ... No new atoms are created, and no atoms are destroyed. In a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.

Explanation:

Answer: In a chemical reaction, the atoms and molecules that interact with each other are called reactants. ... No new atoms are created, and no atoms are destroyed. In a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.

Explanation: Hope this helped! :)

word equation for HgO → Hg +O2

Answers

I hope this one is helping you

how many atoms in 10.0 g of Ar?

Answers

Answer:

1.51 x 10^23 atoms of Ar

Explanation:

Start out with what you're given.

10.0 g of Ar/1 * 1 mol/39.948 g Ar * 6.022*10^23 atoms/1 mol

(It's easier if you write it out.)

You always want to start out w/ what you're given and continue your unit conversions from there. Since you started out with grams of Argon, you want grams of Argon on the bottom to cancel it out. Once you found the unit conversion: 1 mol/39.948 g Ar (molar mass of Ar), now it's time to convert to atoms. Since 1 mol is up on top, put 1 mol on the bottom. Considering you're looking for atoms, use Avagradro's number: 6.022*10^23.

Once simplified, you should get 1.51 x 10^23 atoms of Ar.

***I hope this helps! I also suggest using a mole map, if you're interested.***

Sedimentary
Weathering
erosion, transport
deposition
Heat and/or
pressure
Igneous
Metamorphic
The
Rock
Cycle
Intrusion or
eruption
Burial and
extreme heat
Magma
Look at the diagram above.
Which sentence BEST describes a process in the rock cycle?
Igneous rocks can become metamorphic and sedimentary rocks.
Metamorphic rocks can form by the weathering process,
Volcanoes can deposit sedimentary rock to form mountains.
O Sedimentary rocks can melt to become metamorphic rocks.

Answers

Answer:

I am confident that it is the last answer but if you can find a more verified answer I would go for that.

When 10 grams of water completely evaporate into water vapor, the volume of the water vapor is greater than the volume of the original liquid water, but the mass remains the same. Why does the mass stay the same? Which answer is correct?

A
The temperature of the liquid water and water vapor is the same.

The temperature of the liquid water and water vapor is the same.

B
The density of the liquid water is the same as the density of the water vapor.

The density of the liquid water is the same as the density of the water vapor.

C
The number of atoms in the water vapor is equal to the number of atoms in the liquid water.

The number of atoms in the water vapor is equal to the number of atoms in the liquid water.

D
The distance between the water molecules is the same in the liquid and the vapor.

The distance between the water molecules is the same in the liquid and the vapor.

Answers

Answer: I think the answer is B or C, its kind of hard.

As the number of atoms in the water vapor is equal to the number of atoms in the liquid water. Therefore, the mass of the water remains the same.

What is evaporation?

Evaporation is a process that usually happens on the surface of water or liquid and it involves the conversion of the liquid phase into the gaseous phase. This process involves a change in the state of matter of water or liquids.

When the water is completely evaporated into water vapor the density of the water vapor is less than the density of the liquid water as the vapors occupy a large volume in comparison to liquid water.

But the number of atoms in the water vapor is the same as the number of atoms in the liquid water. The mass of the water is due to the mass of the atoms.

Therefore, the mass of the water remains the same during the phase transition from liquid water to water vapors. Therefore, option (C) is correct.

Learn more about evaporation, here:

https://brainly.com/question/5019199

#SPJ2

Describe the motion of water molecules in a wave.

Lesson 2.13

Question 5 options:

Water molecules move up and forward, down and back, in an overall circular motion.


All of the choices


none of the choices


Water molecules don't move

Answers

Answer:

Molecules in the water move in a circular motion

Explanation:

Because of its circular motion it causes the waves to look like open circles which makes it easy for people to surf on

Water molecules move up and forward, down and back, in an overall circular motion in the wave. Therefore, option A is correct.

What is circular motion ?

Circular motion is defined as the movement of an object while rotating in a circle. Circular motion can be uniform or asymmetric.

The angular rate of rotation and speed are constant in uniform circular motion, but the rate of rotation changes in non-uniform circular motion.

This means that circular motion can occur only if there is a "center seeking" force present; otherwise, things will travel in a straight line.

Within the wave, the water molecules move in a circular motion. Each water particle moves in a complete circle during a single wave period. The circle traced by a water particle on the ocean surface as a wave passes a given point has a diameter equal to the height of the wave.

Thus, option A is correct.

To learn more about the circular motion, follow the link;

https://brainly.com/question/2285236

#SPJ6

For the reaction between aqueous silver nitrate and aqueous sodium chloride, write each of the following. The products of the reaction are aqueous sodium nitrate and solid silver chloride.
Complete equation
Complete ionic equation
Net ionic equation

Answers

Answer:

A balanced ionic equation shows the reacting ions in a chemical reaction. These equations can be used to represent what happens in precipitation reactions or displacement reactions.

Precipitation reactions

In a typical precipitation reaction, two soluble reactants form an insoluble product and a soluble product.

For example, silver nitrate solution reacts with sodium chloride solution. Insoluble solid silver chloride and sodium nitrate solution form:

AgNO3(aq) + NaCl(aq) → AgCl(s) + NaNO3(aq)

The Na+ ions and NO3- ions remain separate in the sodium nitrate solution and do not form a precipitate. Ions that remain essentially unchanged during a reaction are called spectator ions.This means these can be ignored when writing the ionic equation. Only how the solid silver chloride forms is needed to be shown:

Ag+(aq) + Cl-(aq) → AgCl(s)

In a balanced ionic equation:

the number of positive and negative charges is the same

the numbers of atoms of each element on the left and right are the same

Displacement reactions

Displacement reactions take place when a reactive element displaces a less reactive element from one of its compounds.

A common type of displacement reaction takes place when a reactive metal reacts with the salt of a less reactive metal. For example, copper reacts with silver nitrate solution to produce silver and copper(II) nitrate solution:

2AgNO3(aq) + Cu(s) → 2Ag(s) + Cu(NO3)2(aq)

In this reaction, the NO3- ions remain in the solution and do not react - they are the spectator ions in this reaction. So, they can be removed from the ionic equation:

2Ag+(aq) + Cu(s) → 2Ag(s) + Cu2+(aq)

Question

Explain why this ionic equation is balanced:

Ba2+(aq) + SO42-(aq) → BaSO4(s)

Hide answer

There are the same numbers of atoms of each element on both sides of the equation. The total charge on both sides is also the same (zero).

Question

Balance this ionic equation, which represents the formation of a silver carbonate precipitate:

Ag+(aq) + CO32-(aq) → Ag2CO3(s)

Hide answer

2Ag+(aq) + CO32-(aq) → Ag2CO3(s)

Question

Balance this ionic equation, which represents the displacement of iodine from iodide ions by chlorine:

Cl2(aq) + I-(aq) → I2(aq) + Cl-(aq)

Hide answer

Cl2(aq) + 2I-(aq) → I2(aq) + 2Cl-(aq

Explanation:

this will help, I used this for my work x

AgNO₃ (aq) + NaCl (aq) → AgCl (s) + NaNO₃(aq) is the complete chemical equation taking place between the 2 reactants.

Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.

A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .

Learn more about chemical equation,here:

https://brainly.com/question/28792948

#SPJ6

A student pushes a box with a force of 20 N to the right and another student pushes the box with a force of 5 N to the left.

What is the net force and direction in which the box moved?

Answers

The net force is 15 and the box moves to the right

The net force acting on the box is 15 N which is the difference of the two acting forces and the  box shifts to the right in the direction in which greater amount of force is applied.

What is force?

Force is defined as a cause which is capable of changing the motion of an object. It can cause an object which has mass to change it's velocity. It is also simply a push or a pull . It has both magnitude as well as direction.Hence, it is a vector quantity.

It has SI units of Newton and is represented by'F'.Newton's second law states that force which acts on an object is equal to momentum which changes with time. If mass of object is constant, acceleration is directly proportional to net force acting on an object.

The concepts which related to force are thrust and torque .Thrust increases the velocity of an object and torque produces change in rotational speed of an object.

Learn more about force,here:

https://brainly.com/question/1675020

#SPJ2


1. Place the following in order from largest amount of water found on Earth to the smallest:

glaciers and ice caps, ground water, ocean

Answers

Answer:

ocean, glaciers and ice caps,

ground water

Explanation:

What is the density of a sample with a mass of 5250g and a volume of 4.5mL

Answers

Answer:

1166.67

Explanation:

density=mass/volume

density= 5250/4.5

density=1166.67g/mL

What’s the answer? I need an answer as soon as possible please!

Answers

Answer:

1, 1, 2

Explanation:

1, 1, 2

N2O5 + H2O → 2HNO3

The coefficients for the N2O5 and H2O are technically 1; if you must provide a value for those reactants, then that would be it.


Calculate the percent by mass of benzene in a solution containing 14.2 g of benzene in 28.0 g of
carbon tetrachloride

Answers

Answer:

33.65%

Explanation:

total weight of solution=14.2+28=42.2g

benzene=14.2/42.2*100=33.65%

Other Questions
2. What about plants in particular does Friar Laurence explain in Act 2, Scene 3 of Romeo and Juliet? A. That all plants can be good or evil, depending on their usage B. That he knows nothing about them, but that he always wanted to learn C. That Romeo needs to be careful because there are poisonous plants growing beside harmless ones D. That plants are the reason he became a friar When using e-mail for business purposes, employees should _____.be briefuse spell checkuse appropriate punctuationwrite in all capital letters when the message is importantuse correct grammarsend out jokes to increase employee moraleproofread messagesuse extra exclamation marks to indicate urgency 2. The weights of four objects with different masses have been calculated to show how much each object would weigh on four different planets.Based on the table, which object would have the largest mass and greatest weight on Earth?Weights of Four Objects on Four PlanetsPlanet 1B 10 NC 1 ND 20 NPlanet 2A 10NC 0.2 ND 4 NPlanet 3A 100 NB 20 ND 40 NPlanet 4A 5 NB 1NC 0.1 N Convert 15oc to K(lll mark you as brainlister) Winston thinks O'Brien is a member of the Brotherhood. FalseTrue Why might some people prefer to an assisted su*c*de over palliative care in a hospice? Plz help I will give brainlest Magnesium hydroxide is 54.87% oxygen by mass.How many grams of oxygen are in 175 g of the com-pound? How many moles of oxygen is this? What are the roles of the president of the Senate, the president pro tempore, and the Senate majority leader? What is the solution to 0.4x4 Thomas Jefferson bought the Louisiana Purchase from the French general Napoleon Bonaparte. It was the largest land purchase in American History at over a billion acres. How much did each cost?Please help Do you believe that the United States decision to expand westward was right or wrong? Can someone help me ?! Mr. Robins earns a commission on each airfare he books. At the end of the day, he had booked $208.60 worth of airfare and earned $31.29. What is Mr. Robins commission rate (percent)? Can somebody help and show work WRITE AN EQUATION RHAT DESCRIBES THE PATTERN SHOWN IN THE TABLE!! Please help!!! HURRY PLEASE TYSM Suppose a farmer in Georgia begins to grow peaches. He uses $1,000,000 in savings to purchase land, he rents equipment for $90 comma 000 a year, and he pays workers $110 comma 000 in wages. In return, he produces 300 comma 000 baskets of peaches per year, which sell for $3.00 each. Suppose the interest rate on savings is 1 percent and that the farmer could otherwise have earned $45 comma 000 as a shoe salesman. What is the farmer's economic profit? The peach farmer earns economic profit of $nothing . (Enter your response as an integer.) Plss help !!!!!!!!!!!!!!!! Can someone help me Can you help me please Suppose you dilate a square with a length and width of 12 by a scale factor of 1. What isthe width of the new image?