3 years ago

1. Which is a substance that cannot be broken down into another substance?

Chemistry

1 answer:

grandymaker [24]3 years ago

3 0

Answer:

Atom

Explanation:

my theory:

Atoms are their own substance. It's atom because if you tried to break an atom, you would be going into nuclear physics. That would be unsafe and dangerous.

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Benzene is a starting material in the synthesis of nylon fibers and polystyrene (styrofoam). Its specific heat capacity is 1.74

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<u>Answer:</u> The final temperature of the sample is 62.66°C

<u>Explanation:</u>

To calculate the amount of heat absorbed, we use the equation:

$Q=mc\Delta T$

where,

Q = heat absorbed = 16.7 kJ = 16700 J (Conversion factor: 1 kJ = 1000 J)

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c = specific heat capacity of sample = $1.74J/g.^oC$

$\Delta T$ = change in temperature = $T_2-T_1=(T_2-20.0)$

Putting values in above equation, we get:

$16700=225g\times 1.74J/g.^oC\times (T_2-20)^oC\\\\T_2=62.66^oC$

Hence, the final temperature of the sample is 62.66°C

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