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3 years ago

Compare and contrast the molecular activity of solids, liquids, and gases.

Chemistry

1 answer:

cupoosta [38]3 years ago

5 0

Answer:

The molecules in a solid are close together and they vibrate in place. The molecules in a liquid move quickly and farther apart from eachother. The particles in a gas move freely at high speeds and slide past eachother.

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Olivia bought new gym shoes to play volleyball because she kept slipping when she ran in her old shoes. How will the new soles h

HACTEHA [7]

Maybe her old shoes had soft worn out bottoms and she slips in them. So her new shoes had more grip than her old ones so they kept her from falling.

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3 years ago

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Magnesium fluoride contains only magnesium and fluorine. what is the formula for this compound? express your answer as a chemica

Advocard [28]

The chemical formula is MgF2 as mg looses two electrons and fluorine gains one. Therefore you need two fluorides to gain two electrons

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4 years ago

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In a constant-pressure calorimetry experiment, a reaction gives off 22.8 kJ of heat. The calorimeter contains 150 g of water, in

ludmilkaskok [199]

Answer:

The final temperature of water is 56,7 ºC

Explanation:

We need to apply the specific heat capacity formula to solve this.

Q = m . C . ΔT

22,8 kJ = 150 g . 4,186 J/g °C . (Tfinal - 20,4º C)

(We need to convert kJ in J to use the specific heat of water, be careful with units)

22,8 kJ = 22800 J (x1000)

22800 J = 150 g . 4,186 J/g °C . (Tfinal - 20,4º C)

22800 J = 627,9 J/ºC (Tfinal - 20,4º C)

22800 J / 627,9 ºC/ J = (Tfinal - 20,4º C)

36,3ºC = Tfinal - 20,4º C

36,3ºC + 20,4º C = 56,7 ºC

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4 years ago

The haploid cell of an organism has 18 chromosomes. How much would a diploid cell have?

Reika [66]

Answer:

It would have 23 chromosomes.

Explanation:

A Diploid is a cell or organism that has paired chromosomes, one from each parent.

In humans, cells other than sex cells, a diploid will have 23 pairs of chromosomes.

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3 years ago

Write an equation showing how this buffer neutralizes added base (ba(oh2.

Crank

Ba(OH)2 can be neutralized by adding an acid to the solution. We can add HCl to produce:

Ba(OH)2 + 2HCl ===> BaCl2 + 2H2O ; producing a salt BaCl2 and water.

or we can add H2SO4 to produce:

Ba(OH)2 + H2SO4 ===> BaSO4 + 2H2O; producing a salt, BaSO4, and water. <span />

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3 years ago

Compare and contrast the molecular activity of solids, liquids, and gases.​

Compare and contrast the molecular activity of solids, liquids, and gases.