Sprinters set in the starting blocks at the beginning of a race rely on what kind of energy conversion?

1 answer:

6 0

A.Chemical potential energy converting to kinetic energy

Chemical potential energy relates to the energy stored in the body of the runner, and kinetic energy is the energy released when running.

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Which of the following results in a chemical change in matter?

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Part E

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Answer: similar, energy

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There are millions of organic compounds but only thousands of inorganic compounds because:______

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Answer:

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A scientist measures the standard enthalpy change for the following reaction to be -17.2 kJ : Ca(OH)2(aq) 2 HCl(aq)CaCl2(s)

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Answer: $\Delta H^{0}=-173.72$ kJ/mol

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The standard enthalpy of formation of HCl is calculated as:

$\Delta ^{0}=\Sigma H_{products}-\Sigma H_{reactants}$