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siniylev [52]
3 years ago
10

Jon rides his bike for 10 minutes and travels 5 km. What is Jon's average speed?

Chemistry
2 answers:
Nutka1998 [239]3 years ago
8 0

Answer:

8.3m/s^2

Explanation:

Speed is equal to distance over time

S=5000m/600s

S=8.3333m/s^2

Bogdan [553]3 years ago
3 0

Answer:

50

Explanation:

It is 50 because 5×10=50

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If 3 moles of a compound use 12 J of energy in a reaction, what is the Hreaction in kJ/mol
igomit [66]

Answer:

\Delta _RH=4x10^{-3}\frac{kJ}{mol}

Explanation:

Hello,

In this case, the molar enthalpy of reaction is obtained by dividing the involved energy by the reacting moles:

\Delta _RH=\frac{12J}{3mol} =4\frac{J}{mol}

Thus, it is important to notice that the compound "uses" the energy, it means that it absorbs the energy, for that reason the sign is positive. Moreover, computing the result in kJ/mol we finally obtain:

\Delta _RH=4\frac{J}{mol}*\frac{1kJ}{1000J} =4x10^{-3}\frac{kJ}{mol}

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