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3 years ago

A chemical compound once used as a propellant in aerosol sprays is called

Chemistry

1 answer:

liq [111]3 years ago

5 0

The answer is fluorocarbon.

That is a chemical compound once used as a propellant in aerosol sprays is called fluorocarbon.

Earlier trichlorofluoromethane (CFC-11) and dichlorodifluoromethane (CFC-12) were the most used chemical compound that are used as a propellant in aerosol sprays. But their use is discontinued under the Montreal Protocol.

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What information can be learned from bloodstains at a crime scene?

tangare [24]

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3 years ago

Two 10g blocks, one of copper and one of iron, were heated from 300 K to 400K (a temperature difference of 100 K).

12345 [234]

1) 385 J

2) 450 J

Explanation:

The amount of energy that must be absorbed by a certain substance in order to increase its temperature by $\Delta T$ is given by the equation:

$Q=mC\Delta T$

where

m is the mass of the substance

C is its specific heat capacity

$\Delta T$ is the increase in temperature of the substance

For the block of copper in this problem, we have:

m = 10 g is the mass

$C=0.385 J/gK$ is the specific heat capacity of copper

$\Delta T=400-300 = 100 K$ is the change in temperature

So, the energy absorbed by the block of copper is

$Q=(10)(0.385)(100)=385 J$

Similarly for the block of iron, the energy absorbed by the iron is given by

$Q=mC\Delta T$

where

m is the mass of the block of iron

C is its specific heat capacity of iron

$\Delta T$ is the increase in temperature of the block

Here we have:

m = 10 g is the mass of the block

$C=0.450 J/gK$ is the specific heat capacity of iron

$\Delta T=400-300 = 100 K$ is the change in temperature

So, the energy absorbed by the block of iron is

$Q=(10)(0.450)(100)=450 J$

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2 years ago

Which of the following questions can be answered by science? (2 points) What makes a song sound beautiful? What is the meaning o

34kurt

Answer:

Explanation:

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3 years ago

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