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Fed [463]
3 years ago
12

When a solid melts

Chemistry
1 answer:
Reptile [31]3 years ago
5 0
When solid melts, the temperature of the substances increases and the substance absorbs heat energy, converting the solid to a liquid.
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Why did we have you determine the reaction rate using reactant consumed per unit of time instead of product formed per unit of t
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Answer:Rate of reaction can be determined in terms of concentration of reactants consumed or concentration of product formed per unit time

Explanation: For the reaction below

A ===>B

The reactant is A while the product given is B.

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The concentration of A will decrease with time while the concentration of B will increases with time.

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What four properties do all waves have in common
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Dry ice is solid carbon dioxide. Instead of melting, solid carbon dioxide sublimes according to the following equation: CO2(s)→C
GREYUIT [131]

Answer:

m=8.79kg

Explanation:

First of all we need to calculate the heat that the water in the cooler is able to release:

Q=\rho * V*Cp*\Delta T

Where:

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  • V is the volume
  • \rho is the density

Q=1 g/cm^3 *15000 cm^3*4.184 \frac{J}{g*^{\circ}C}*(10-90)^{\circ}C

Q=-5020800 J=-5020.8 kJ

To calculate the mass of CO2 that sublimes:

-Q=\Delta H_{sub}*m

Knowing that the enthalpy of sublimation for the CO2 is: \Delta H_{sub}=571 kJ/kg

5020.8 kJ=571 kJ/kg*m

m=\frac{5020.8 kJ}{571 kJ/kg}=8.79kg

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3 years ago
Massive amounts of energy are contained in an atom's: Select one:
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