3 years ago

Which stament best describes a solution

Chemistry

1 answer:

wel3 years ago

3 0

Where are the following statements ??

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Calculate the energy required to move from solid water at 0 degrees C to liquid water at 0 degrees C

Serhud [2]

Answer:

$Q = 334\,kJ$

Explanation:

Let assume that 1 kilogram of water in solid state at one atmosphere of pressure. The fussion latent heat of $334\,\frac{kJ}{kg}$ , the heat required to change the phase of water is:

$Q = m \cdot L_{f}$

$Q = (1\,kg)\cdot \left(334\,\frac{kJ}{kg} \right)$

$Q = 334\,kJ$

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4 years ago

20 g of water. specific heat of water is 4.18 J/x°C. temperature changes from

pashok25 [27]

Answer:

B or the second one

Explanation:

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3 years ago

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At 300K, the pressure inside a gas-filled container is 500 kPa. If the pressure inside decreases to 100 kPa, but the volume rema

alukav5142 [94]

PV = nRT

⇒P1/T1 = P2/T2
⇒500/300 = 100/T2
⇒ T2 = 100×300/500 = 60K

Answer is D

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4 years ago

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If a shell can hold a maximum of 32 electrons, what is the value of n

just olya [345]

I think the answe would be 16n

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3 years ago

A sample of calcium bromide contains 0.2 g calcium and 0.8 g bromine by mass. Calculate the empirical formula of calcium bromide

Marina86 [1]

I worked it... Hope this helps

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3 years ago