A pebble is dropped into a cup of water and sinks to the bottom ofthe cup. A solid metal bead of exactly the same size is dropped into the same cup and sinks to the bottom of the cup. How do the pebble and the metal bead compare?

Answers

Answer 1

Answer:

A solid metal bead of the same size is dropped into the same cup and sinks to the bottom of the cup. How do the pebble and the metal bead compare? They both have the same mass. They are both denser than water.

Explanation:

nun

Answer 2

Answer:

Both the pebble and metal bead of the same mass will be equally accelerated  if they are at the same place, in this case, they are in the same place meaning they will be accelerated at the same speed towards the earth. Thus even if they are in the water they will sink at the same speed and finally will reach the bottom of the cup.


Related Questions

Increasing the amount of current flowing through a wire strengthens
what?
magnetic field
electromagnetism
solenoid
O polarity

Answers

Answer:

It will strengthen Electromagnetism


In the following reaction 2Na+ 2H20 - 2NaOH + H2: all of the sodium is consumed and a small amount of
liquid water remains at the end of the reaction. Which reactant is the limiting reagent?

A) H20
B) H2
C) Na
D) NaOH

Answers

Answer:

C) Na

Explanation:

The question tells us that all of the sodium (Na) is consumed and that water is left over. This means that sodium would be the limiting reagent.

C)na

I took the test

HELPPP ASAPPP

Use the element tile below to calculate the molar mass of He2 (helium gas).



2 g/mol

16.012 g/mol

8.006 g/mol

4.003 g/mol

Answers

Answer: 4.003 g/mol

Explanation:

So basically Molar mass is the atomic mass of an element and the atomic mass of Helium is 4.0026 or 4.003 g/mol

8.006 g/mol

multiply the molar mass of helium (4.003) by the subscript and you have your answer!

Plz help! I will give brainliest.

Answers

Answer:

D. 0.50

Explanation:

Use avogadro number to find the whole work.

Carbon is more stable element than Silicon. True or False?

Answers

the answer would be true

NH₄NO₃ → N₂O + 2H₂O When 45.70 g of NH₄NO₃ decomposes, what mass of each product is formed?

Answers

Answer: 25.13 g of [tex]N_2O[/tex]  and 20.56 g of [tex]H_2O[/tex] will be produced from 45.70 g of [tex]NH_4NO_3[/tex]

Explanation:

To calculate the moles :

[tex]\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}[/tex]    

[tex]\text{Moles of} NH_4NO_3=\frac{45.70g}{80.04g/mol}=0.571moles[/tex]

The balanced chemical equation is:

[tex]NH_4NO_3\rightarrow N_2O+2H_2O[/tex]  

According to stoichiometry :

1 mole of [tex]NH_4NO_3[/tex] produce = 1 mole of [tex]N_2O[/tex]

Thus 0.571 moles of [tex]NH_4NO_3[/tex] will require=[tex]\frac{1}{1}\times 0.571=0.571moles[/tex]  of [tex]N_2O[/tex]  

Mass of [tex]N_2O=moles\times {\text {Molar mass}}=0.571moles\times 44.01g/mol=25.13g[/tex]

1 mole of [tex]NH_4NO_3[/tex] produce = 2 moles of [tex]H_2O[/tex]

Thus 0.571 moles of [tex]NH_4NO_3[/tex] will require=[tex]\frac{2}{1}\times 0.571=1.142moles[/tex]  of [tex]H_2O[/tex]  

Mass of [tex]H_2O=moles\times {\text {Molar mass}}=1.142moles\times 18g/mol=20.56g[/tex]

Thus 25.13 g of [tex]N_2O[/tex]  and 20.56 g of [tex]H_2O[/tex] will be produced from 45.70 g of [tex]NH_4NO_3[/tex]

Name the following compound:

CH2 ≡ CH2

Ethyl
Ethyne
Ethane
ethane

Answers

Answer:

Answer is A. Ethyl.........

Answer:

D. ethane

Explanation:

How many grams are there in 9.03 x 1023 molecules of CO2?

Answers

Answer:

The correct answer is - 66g.

Explanation:

Given:

molecules of CO2 = 9.03 x 10^23

We know:

1 mole of any substance = 6.02x10^23 molecules. (Avogadro's number)

M (CO2) = 12 + (2x16) = 12 + 32 = 44g

Solution:

The mass of CO2 with 9.03x10^23 molecules would be:

44g of CO2 = 6.02x10^23 molecules.

So, the mass in grams of CO2 (X) = 9.03x10^23 molecules

Xg of CO2 = (44x9.03x10^23)/6.02x10^23 = 66g

Thus, the correct answer would be - 66gm.

Which compounds will most likely dissociate when dissolved in water? Select all that apply.

Answers

Answer:

A) barium hydroxide

B) ethanol  

C) glucose

D) silver nitrate  

E) dichloromethane

F) postassium chloride

The other compounds ethanol and glucose  are also soluble in water but do not dissociate when dissolved in water.

Explanation:

Please mark this Brainilest.

These compounds will dissociate in water:

A) barium hydroxide

D) silver nitrate

F) potassium chloride

What are ionic compounds?Many compounds do separate when they are dissolved in water. Ionic substances break apart into a positive ion and a negative ion when placed in water, a process known as electrolytic or ionic dissociation. Ionization is the name given to this kind of dissociation reaction.When dissolved in water, many substances do dissociate. It is claimed that substances that dissolve in water form electrolytes, which are ions.Electrolytes can disintegrate into cations and anions after being dissolved, or they may be ionic substances that chemically react with water to produce ions.

learn more about dissociation here: https://brainly.com/question/305470

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Determine the percent yield for the reaction between 46.5 g of
ZnS and 13.3 g of oxygen if 18.l4 g of ZnO is recovered along with an unknown quantity of sulfur
dioxide.
please show work thank you

Answers

Found an answer sheet :)

The percentage yield of the reaction has been 46.74%.

Percentage yield can be given as the ratio of the actual yield to the theoretical yield.

For the theoretical yield, the balanced equation will be:

[tex]\rm 2\;ZnS\;+\;3\;O_2\;\rightarrow\;2\;ZnO\;+\;2\;SO_2[/tex]

Thus, 2 moles of ZnS will give 2 moles of ZnO.

The moles of 46.5 g ZnS:

Moles = [tex]\rm \dfrac{weight}{molecular\;weight}[/tex]

ZnS = [tex]\rm \dfrac{46.5}{97.474}[/tex]

ZnS = 0.477 mol

The moles of 13.3 grams Oxygen:

Oxygen = [tex]\rm \dfrac{13.3}{32}[/tex]

Oxygen = 0.415 mol.

The moles of 18.14 grams ZnO:

ZnO = [tex]\rm \dfrac{18.14}{81.38}[/tex]

ZnO = 0.222 mol

According to the balanced chemical equation,

2 moles ZnO = 2 moles ZnS

0.222 mol ZnO = 0.222 mol ZnS

2 moles ZnO = 3 moles Oxygen

0.222 mol ZnO = 0.334 mol of Oxygen

Since, both the reactants are in enough concentration,

The theoretical yield can be calculated with any of the reactants. The theoretical yield of ZnO from 46.5 grams of ZnS can be given as:

1 mole ZnS = 1 mol ZnO

0.477 mol of ZnS = 0.477 mol of ZnO.

The mass of 0.477 mol of ZnO:

Mass = moles [tex]\times[/tex] molecular weight

Mass of ZnO = 0.477 [tex]\times[/tex] 81.38

Mass of ZnO = 38.818 grams.

The theoretical yield of ZnO = 38.818 g.

The actual yield of ZnO = 18.14 g.

Percentage yield = [tex]\rm \dfrac{18.14}{38.81}\;\times\;100[/tex]

Percentage yield = 46.74 %

The percentage yield of the reaction has been 46.74%.

For more information about the percentage yield, refer to the link:

https://brainly.com/question/11715808

The formula for zirconium(VI) dichromate

Answers

Answer:

Zr(Cr2O7)2

Explanation:

Molar Volume of a gas at STP=22.4 L Example 3: Determine the volume of Carbon dioxide created when 15.0 grams of NaHCO3 are decomposed into water, Sodium carbonate, and Carbon dioxide at STP?​

Answers

Answer:

20009 is answer is right 1345678899444

Explanation:

thhjbfthvcdthvctyhgffdy

gvhjk ghkde ghjcddxxb hhj hhgddxb ggjbcxdss ggbbsrtyg fy gbsdgh

write a detailed paragraph about how a volcano is formed. be sure to
include how density, convection currents, and plate tectonics all come
together to make a volcano.

Answers

Answer:

okay but give me brainliest

Explanation:

A volcano is formed when hot molten rock, ash and gases escape from an opening in the Earth's surface. The molten rock and ash solidify as they cool, forming the distinctive volcano shape shown here. As a volcano erupts, it spills lava that flows downslope. Volcanic flows are called lahars.

How many particles are in one mole of copper (II) sulfate, CuSO4?

Answers

2. Avogadro’s number

what kind of chemical reaction is this?

Answers

It’s a hydrogen reaction

HELP ME PLZ!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
What happens when something reaches absolute zero?
Question 5 options:

1)There are no particles left in it

2)The particles completely stop moving

3)The particles are vibrating at a rate greater than the speed of light

4)There is no such thing as absolute zero

Answers

Answer:

There's no such thing as absolute zero

Answer:

I think number 1 but if wrong report me

The kinetic molecular theory, explains how particles in matter behave.
True
False

Answers

Answer:

true

Explanation:it is hard to explan

True I seen this on my quiz

Which statement best describes DNA?
(A) It can be found in every living cell.
B It can be found only in specialized
cells.
© It can be found only in cells with a
nucleus.
D It can be found only when cells are
dividing.

Answers

Answer:

Found in every living cell

What happens when dilute sulphuric acid is poured on a copper plate?​

Answers

Copper does not react with dilute sulphuric acid. So, no reaction will take place when diluting sulphuric acid is poured onto a copper plate. ... When iron nails are placed in a copper sulfate solution, iron displaces copper to form iron sulfate. Slowly, the blue color of the copper sulfate solution turns into green.

Which formula represents a hydrate compound?​

Answers

Answer:

H2O2

Explanation:

There's hydrogen and ox in the formula to represent

1. The pressure of a gas is 100.0 kPa and its volume is 500.0 ml. If the volume increases to 1,000.0 ml, what is the new pressure of the gas?



2. If a gas at 25.0 °C occupies 3.60 liters at a pressure of 10 kPa, what will be its volume at a pressure of 25 kPa?



3. When the pressure on a gas increases three times, by how much will the volume increase or decrease?


4. Boyle's Law deals what quantities?

Answers

Answer:

1) The new pressure of the gas is 500 kilopascals.

2) The final volume is 1.44 liters.

3) Volume will decrease by approximately 67 %.

4) The Boyle's Laws deals with pressures and volumes.

Explanation:

1) From the Equation of State for Ideal Gases we construct the following relationship:

[tex]\frac{P_{2}}{P_{1}} = \frac{V_{1}}{V_{2}}[/tex] (1)

Where:

[tex]P_{1}, P_{2}[/tex] - Initial and final pressure, measured in kPa.

[tex]V_{1}, V_{2}[/tex] - Initial and final pressure, measured in mililiters.

If we know that [tex]P_{1} = 100\,kPa[/tex], [tex]V_{1} = 500\,mL[/tex] and [tex]V_{2} = 1000\,mL[/tex], then the new pressure of the gas is:

[tex]P_{2} = P_{1}\cdot \left(\frac{V_{1}}{V_{2}} \right)[/tex]

[tex]P_{2} = 500\,kPa[/tex]

The new pressure of the gas is 500 kilopascals.

2) Let suppose that gas experiments an isothermal process. From the Equation of State for Ideal Gases we construct the following relationship:

[tex]\frac{P_{2}}{P_{1}} = \frac{V_{1}}{V_{2}}[/tex] (1)

Where:

[tex]P_{1}, P_{2}[/tex] - Initial and final pressure, measured in kPa.

[tex]V_{1}, V_{2}[/tex] - Initial and final pressure, measured in mililiters.

If we know that [tex]V_{1} = 3.60\,L[/tex], [tex]P_{1} = 10\,kPa[/tex] and [tex]P_{2} = 25\,kPa[/tex] then the new volume of the gas is:

[tex]V_{2} = V_{1}\cdot \left(\frac{P_{1}}{P_{2}} \right)[/tex]

[tex]V_{2} = 1.44\,L[/tex]

The final volume is 1.44 liters.

3) From the Equation of State for Ideal Gases we construct the following relationship:

[tex]\frac{P_{2}}{P_{1}} = \frac{V_{1}}{V_{2}}[/tex] (1)

Where:

[tex]P_{1}, P_{2}[/tex] - Initial and final pressure, measured in kPa.

[tex]V_{1}, V_{2}[/tex] - Initial and final pressure, measured in mililiters.

If we know that [tex]\frac{P_{2}}{P_{1}} = 3[/tex], then the volume ratio is:

[tex]\frac{V_{1}}{V_{2}} = 3[/tex]

[tex]\frac{V_{2}}{V_{1}} = \frac{1}{3}[/tex]

Volume will decrease by approximately 67 %.

4) The Boyle's Laws deals with pressures and volumes.

3. Identify the 4 primary pigments found in plant leaves (name and color)

Answers

Chlorophyll: green
Anthocyanins: red
Carotene: orange.
Sorry I couldn’t find the 4th one

The force that is pulling down on a person or object on the surface of the Earth is
called (attraction of matter to matter)?
normal force
mass
weight
gravity

Answers

This is gravity.
Have a good day/night

The Earth has how many satellites?
(i know this is not chemistry theres no science one)

Answers

3,000 operational satellites currently orbiting earth

Answer:

Well it depends, There are THOUSANDS of inactive satellites. Even scientists don't know how many as for active ones there is about 1 957 according to nasa

Explanation:

PLEASE HELP ME QUICKLY!

Imagine you are at your favorite beach. The sun is shining and you are enjoying the ocean breeze. The temperature is about 89F. You take your shoes off and realize that the sand is almost too hot to walk on. You run to the water's edge to wet your feet after the walk over the sand and realize that the water is almost too cold. Explain the temperature difference between the sand and water using Thermodynamics.

Answers

Answer:

The specific heat of water is more specific than the heat of sand, therefore, it will take more energy to raise the same amount of water with the same temperature.

Explanation:

The temp is 89 F so, 31.67° C

The specific heat of  the water is 4.184 J/g° C

The specific heat of the sand is 0.290 J/ g° C

The heat is the amount  of energy that is needed to raise the temp. of the substance

You will need a lot more energy to raise the temp of the water then of the same amount of sand, therefore, because of the specific lower heat of the sand it will raise it's temperature quicker compared to water.

1. The multiplicative inverse of 5/9 is.....
a-9/5
b-9/5
c-3/9
d-None of these​

Answers

Answer:

None of these cause the correct answer is 9/-5

The Answer Is None Of These
But The Answer Is -5/9

What is the pOH if the [OH-]= 0.165 M? What is the pH of this basic solution? *Please round your answer(s) to the appropriate number of significant figures. Your answer can be in standard notation or i letter "e" in place of x10.* 1 N​

Answers

Answer:

78

Explanation:

Answer:

The OH would be .7825 and the basic solution is a strong base.

Explanation:

What you would do is -log(0.165) in your calculator which would give you 0.7825160065 as an answer. Im not sure what the significant figure is so I will not be rounding to that, but that is your answer for the first part.

The second part: because your pOH is a .7825, this would be consiered a strong base in the pOH because it is closer to 1 which is your base.

When measuring the brightness of a star, what is a limitation of using apparent magnitude rather than absolute brightness?


Apparent magnitude does not use the star's color or temperature.


Apparent magnitude is only theoretical, thus its value cannot be directly measured with equipment.


Apparent magnitude does not take into account the fact that not all stars are the same distance from Earth.


Apparent magnitude is only on a comparative scale that determines how bright a star looks from a theoretical distance of 32 light-years from Earth.

Answers

Answer: Answer:

Explanation:

Apparent magnitude does not take into account the fact that not all stars are the same distance from Earth.

Apparent magnitude is only on a comparative scale that determines how bright a star looks from a theoretical distance of 32 light-years from Earth. Therefore, the correct option is option D.

What is star?

Any large, gaseous celestial body that is capable of producing its own light and illuminates through radiation. Only a very small portion of the tens of milliards of milliards of stars that make up the observable cosmos are readily visible to the eye.

When measuring the brightness of a star, what is a limitation of using apparent magnitude rather than absolute brightness. Apparent magnitude is only on a comparative scale that determines how bright a star looks from a theoretical distance of 32 light-years from Earth.

Therefore, the correct option is option D.

To know more about star, here:

https://brainly.com/question/18426562

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The Moon is always half lit and half dark.
True or
False
(i know this isn’t chemistry theres no science one.)

Answers

Answer:

True

Explanation:

Just like the Earth, half of the Moon is lit by the Sun while the other half is in darkness.

Answer:

Pretty sure it's true.

On Earth, we only see part of the moon that is illuminated or not, since it revolves around the Earth. However, the sun is stationary and doesn't move, meaning that one side of the moon is always lit by the sun as it revolves around the Earth.

Which objects have the most eccentric orbits?

Answers

It’s Mercury
Hope this helps
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