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Tom [10]
3 years ago
9

It isn't possible to transfer heat from an object at a lower temperature to another object at a _ temperature unless work is don

e
Chemistry
2 answers:
lys-0071 [83]3 years ago
8 0
Heat transfers from high to low. So to complete the statement;

<span>It isn't possible to transfer heat from an object at a lower temperature to another object at a HIGHER temperature unless work is done</span>
lisov135 [29]3 years ago
5 0
Higher. Because this type of heat transfer is conduction, meaning that heat always transfers to cooler objects.
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2 years ago
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Morgarella [4.7K]

Answer:

Molec_{\ H_{tot}}=1.206x10^{25}molec

Explanation:

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In this case, taking into account that HCl has one molecule of hydrogen per mole of compound which weights 36.45 g/mol, we compute the number of molecules of hydrogen in hydrochloric acid by considering the given mass and the Avogadro's number:

molec_{\ H}=3.65gHCl*\frac{1molHCl}{36.45gHCl} *\frac{1molH}{1molHCl}*\frac{6.022x10^{23}molec_\ H}{1molH}  =6.03x10^{22}molec

Now, from the 180 g of water, we see two hydrogen molecules per molecule of water, thus, by also using the Avogadro's number we compute the molecules of hydrogen in water:

molec_{\ H}=180gH_2O*\frac{1molH_2O}{18gH_2O} *\frac{2molH}{1molH_2O}*\frac{6.022x10^{23}molec_\ H}{1molH}  =1.20x10^{25}molec

Thus, the total number of molecules turns out:

Molec_{\ H_{tot}}=6.03x10^{22}+1.20x10^{25}\\\\Molec_{\ H_{tot}}=1.206x10^{25}molec

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