Answer:
study of the relations between heat, work, temperature, and energy
Explanation:
Thermodynamics is the study of the relations between heat, work, temperature, and energy. The laws of thermodynamics describe how the energy in a system changes and whether the system can perform useful work on its surroundings.
According to Reference Table I, which reaction has a heat of reaction equal
to -283 kJ/mole at 25°C and I atmosphere?
A) C(s) + O2(g) + CO2(g)
B) CO(g) + O2(g) + CO2(g)
C) N2 +102 + NH3(g)
D) 20 + 3H2 → CzH6
If the molar mass of zinc is 65.39 g/mol. you have a 65.2g piece of zinc. how many moles of zinc are present?
Answer:
By dividing the two, we can determine the mol. And I have also inserteed the formula below
Explanation:
Moles of zinc present in the sample that have a mass of 65.2 g are 0.997 moles.
What are moles?
Moles are used to calculate the amount of substance to measure the small entity. It is calculated as:
[tex]\rm moles = \rm \dfrac{mass}{molar\; mass}[/tex]
Given,
Molar mass of zinc = 65.39 g/mol
Mass of zinc = 65.2 g
Moles are calculated as:
65.2/65.39 = 0.997 moles
Therefore, 0.997 moles of zinc are present.
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3 things to say when your girlfriend is sad?
Answer:
don't be sad you have a nice peach
babe you got that wap
don't be sad go get a tattoo
Answer:
Netflix and chill | do you need d!c rn ? | spoil her
Explanation:
anybody know the answer
Answer:
i think c
Explanation:
PLS ANSWER FAST AHAH
distilled water is a pure substance
true or false ?
Answer:
True
Explanation:
If you see distilled water, it's a pure substance. That means that there are only water molecules in the liquid. A mixture would be a glass of water with other things dissolved inside, like one of those powders you take if you get sick or Kool-Aid.
Mg + 2HCl --> H2 + MgCl2 How many moles of H2 will form from 20 moles of HCl
Which is a way to express concentration of a solution?
parts per billion
moles
molar mass
force per square meter
Answer:
A. Parts Per Billion
Explanation:
ED 2021
Answer:
a
Explanation:
URGENT!! 50 Points Please Help!! Will mark brainliest!! Assignment due in 30 minutes.
2.) Round off each of the answers correctly.
a.) 8.7g + 15.43g + 19g = 43.13g
b.) 4.32cm × 1.7cm = 7.3444[tex]cm^{2}[/tex]
c.) 853.2L - 627.443L = 225.757L
d.) 38.732[tex]m^{2}[/tex] ÷ 0.421m = 92.02375m
e.) 5.40m × 3.21m × 1.871m = 32.431914[tex]m^{3}[/tex]
f.) 5.47[tex]m^{3}[/tex] + 11[tex]m^{3}[/tex] + 87.300[tex]m^{3}[/tex] = 103.770[tex]m^{3}[/tex]
3.) Make the following conversions:
a.) 157cs to seconds
b.) 42.7L to milliliters
c.) 261nm to millimeters
d.) 0.065km to decimeters
e.) 642cg to kilograms
f.) 8.25 × [tex]10^{2}[/tex]cg to nanograms
a) The least number of decimal points is 0 so you should round the answer to 43.
b) The least number of significant figures is 2 so round to 7.3
c)The least number of decimal places is 1 so round to 225.7
d) The least number of significant figures is 3 so round to 92.0
e) The least number of significant figures is 3 so round to 32.4
f) The least number of decimal places is 0 so round to 104m^3
Basically, for addition and subtraction round to the least number of decimal places found in the factors, and for multiplication and division round to the least number of significant figures found in the factors.
This is a Chemical bond where two atoms are sharing 1 or more electrons among the separate elements of a compound
O Covalent Bond
O lonic Bond
O Ambient Bond
O Metallic Bond
Answer:
Covalent bond
1•) What is the universe made of?
2•) How did life begin?
3•) Are we alone in the universe?
4•) What makes us human?
5•) What is consciousness?
6•) Why do we dream?7 Why is there stuff?
8•) Are there other universes?
Phases of Matter—Comic Strip Template
Instructions: Create a comic strip detailing the adventure of your character as the character is exposed to thermal energy, causing it to undergo phase changes from a solid, to a liquid, to a gas. Place drawings inside the boxes and written content on the lines below each box.
Your presentation must include the following:
• title and introduction of your character, including what substance it is made of
• source of thermal energy your character encountered (conduction, convection, and/or radiation)
• detailed description and/or diagram of the particle transformation from solid to liquid phase
• detailed description and/or diagram of the particle transformation from liquid to gas phase
Title of your comic strip: James thermal energy Adventure__________________________
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Answer:
This will be a story. (comic can also be done with this. In fact it is better)
The title is the journey of the ice cube. (change it if you want)
Main character - ice cube
There was an ice cube made by the water from the freezer in an ice shop.
The ice cube, with a bunch of other ice cubes, were taken to be packed and sold to a restaurant. The ice cube was excited to where he was going while the other ice cubes are just meh. Now that the ice cubes arrived, a restaurant worker stores the ice cubes in a cooler and later used to put ice in a lemonade. While the lemonade in a glass cup was carried outside the porch of the restaurant by the waiter, the ice cube was fascinated by the environment of the restaurant. The waiter finally serves the thirsty customer and the customer drank almost half of the lemonade but the ice cube did not get in the man's mouth. Instead the other ice cubes went. The ice cube feared the person. Shortly after checking his phone, the customer was about to reach on to the glass until the hands accidentally pushes the glass over and falls. The ice cube and the remaining ice cubes spread away with the wasted lemonade liquid. No one bothered cleaning up the ice cubes, only the glass shards because the floor is a smooth concrete. Outside was really hot from the sun anyways so it would melt the ice cube and sooner evaporate. As it was in liquid form, the "ice cube" was feeling relaxed because it was just chilling on the floor. And when it evaporates, the ice cubes becomes more fascinated since it goes up to the sky while having a sky-view from above.
The bond line formula,
represents the molecular formula
C₂ H18
C₂H15
yes this is the right question
Balance and classify this reaction:
C6H6 +02 →CO2 +H₂O
How does height affect the speed of a falling object?
How does height affect the speed of a falling object?
Answer :-Equation:- v²-u² = 2aS
let the case of body be dropped
u = zero ( initial velocity ) a = g ( constant falling under gravity)S = initial height of the body from the groundv = final speed of the bodyby further solving :-
v²-0 = 2aS
v² = 2aS
2a is constant
so :-
v is directly proportional to the √S
so we can say that speed of the falling body increase with increase in the square root of the height from which is dropped or falling
If Earth's mass doubled
without changing its size,
your weight would
Answer:
Answer: It will double our mass too .
Explanation: Because the gravitational force will be more and it will attract us more towards its surface which will result to more weight gain .
Explanation:
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A bicycle tire is filled with air to a pressure of 100. psi at a temperature of 19C. Riding the bike on asphalt on a hot day increases the temperature of the tire to 58?C. The volume of the tire increases by 4.0%. What is the new pressure in the bicycle tire?
Considering the direct relationship between pressure and temperature, the new pressure in the bicycle tire would be 63.01 psi
Gas lawThe general gas laws is given by:
P1V1/T1 = P2V2/T2
Where P1 = initial pressure V1 = initial volume T1 = initial temperature, P2 = final pressure, V2 = final volume, and T2 = final temperature.
In this case, P1 = 100 psi, V1 = 1, T1 = 19+273 = 292, P2 = ?, V2 = 1.4, T2 = 58+273 = 331
P2 = P1V1T2/T1V2
= 100x1x292/331x1.4
= 63.01 psi
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c. What is oxidized in the reaction? What is reduced? (2 points)
d. In this simple electrochemical cell, what functions as the anode? What is
the cathode? (1000000)
Answer:
Oxidation: a type of chemical reaction where one or more electrons are lost.
Oxidation State / Number: a number assigned to an atom describing its degree of oxidation, meaning how many electrons it has gained or lost.
Reduction: a type of chemical reaction where one or more electrons are gained.
Oxidation-Reduction Reaction: a chemical reaction where oxidation and reduction occurs simultaneously
Explanation:
Reduction always occurs at cathode
Oxidation always occurs in anode
These two process occurs in same way independent of nature of cell whether voltaic or electrolytic.
A rapid reaction between oxygen and fuel that results in fire.
Which conclusion do the graphs support?
Phosphorus is required for the growth of the phytoplankton.
Phosphorus is required for the growth of the phytoplankton.
Phytoplankton cannot withstand high levels of phosphorus present in the estuary.
Phytoplankton cannot withstand high levels of phosphorus present in the estuary.
Phosphorus harms the growth of phytoplankton in the estuary.
Phosphorus harms the growth of phytoplankton in the estuary.
Phytoplankton growth does not depend on the amount of phosphorus.
Phytoplankton growth does not depend on the amount of phosphorus.
Answer:
Phosphorus is required for the growth of the phytoplankton.
Explanation:
Clouds form from liquid water and ice True Or False ? IF U ANSWER QUICK I WILL GIVE U A BRAINLIEST
Answer:
False
Explanation:
from gas such as vaporization
Can someone help me with this?
1. F
2. E
3. G
4. A
5. C
6. D
7. B
Jon is riding his bicycle around town. Which part of his ride shows the result of balanced forces? A. when he rides at a constant speed up a hill B. when he speeds up going down a hill C. when he rides at a constant speed while turning D. when he slows down on a level sidewalk
Answer:
d. when he slows down on a level sidewalk
Explanation:
that's a balanced force.
Copper metal (cu) reacts with silver nitrate (agno3) in aqueous solution to form ag and cu(no3)2. the balanced chemical equation is shown below. cu 2agno3 right arrow. cu(no3)2 2ag the molar mass of cu is 63.5 g/mol. the molar mass of ag is 107.9 g/mol. what mass, in grams, of ag is produced from a reaction of 31.75 g of cu? 26.95 grams 107.9 grams 215.91 grams 431.82 grams
The mass of produced silver from the reaction is 107.9 grams.
How we calculate mass from moles?Mass of any substance will be calulated by using the moles of that substance as:
n = W/M, where
W = required mass
M = molar mass
Givem chemical reaction is:
Cu + 2AgNO₃ → Cu(NO₃)₂ + 2Ag
Moles of 31.75g of Cu = 31.75g / 63.5g/mol = 0.5 mole
From the stoichiometry of the reaction, it is clear that:
1 mole of Cu = produced 2 moles of Ag
0.5 mole of Cu = produced 2×0.5=1 mole of Ag
Now we calculate the mass of Ag from given moles as:
W = 1mol × 107.9g/mol = 107.9g
Hence correct option is (2).
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What is the speed of light in a vacuum? What would happen to this speed as it enters a different medium?
Answer:
the speed and wavelength of light are reduced , although the frequency remains unaltered.
The speed of light on the vacuum is equal to 3 ×10⁸m/s. The speed of light changes as it enters a different medium due to refraction.
What is refraction?Refraction of light can be described as the redirection of a light ray traveling from one optical medium to another optical medium. The redirection is caused by a change in speed with a change in the medium. Refraction of light can be described as an observed phenomenon, but sound waves and water also experience refraction.
Refraction follows Snell's law, which can be described as the ratio of the sines of the angle of incidence and angle of refraction should be equal to the ratio of the refractive indices of the two different mediums.
When light travels from a less dense to a denser medium, then the refracted ray bends towards the normal. The angle of incidence of the light ray will be greater than the angle of refraction.
If a light ray travels from a denser to a rarer medium, then it will bend away from the normal and the angle of incidence will be less than the angle of refraction.
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What is the main advantage of a compact
fluorescent light bulb?
Answer:
The advantages of compact fluorescents are they are energy efficient, compact in size, have good lumen maintenance, long life, endless shapes and sizes, dimmable, easy retrofit, low operating cost, and radiate less heat.
Explanation:
a sample of gas with a volume of 30 ml with a temperature at 25
Answer: 55? I think
Explanation:
How is a lithium atom (Li) different from a lithium ion (Li+)?
lithium atom has 3 protons and 3 electrons
Lithium ion has 3 protons and 2 electrons
Someone please answer quick.
How many molecules are in 5.5 mol of a ZnCL2 sample
Answer:
The answer is 136.286.
mr cleann
Which example is an endothermic process?
A.) thawing frozen shrimp
B.) mixing strong hydrochloric acid and strong ammonium hydroxide
C.) rusting a nail in water
D.) dissolving acetic acid in water
An example of an endothermic process is the thawing frozen shrimp.
What is an endothermic reaction?An endothermic reaction is one in which energy is taken in as the reaction progresses. Energy is required fro the reaction to progress. In an endothermic reaction, the energy of the products is greater than the energy of the reactants.
In the question, an example of an endothermic process is the thawing frozen shrimp.
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How many moles of carbon are needed to produce 8 moles of carbon sulfide
0.4 is the answer
hope it very helpful