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Serga [27]
3 years ago
13

(a) mass in grams of 0.105 mol sucrose

Chemistry
1 answer:
Mnenie [13.5K]3 years ago
5 0
Sucrose has a chemical formula of C12H22O11. The molar mass of all the atoms added up is 342.297 g/mol.

342.297 g/mol * 1/0.105 mol = 3,259.971 g of sucrose. That is about 3.260 kilograms.
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Answer:

4.52 x 10¹⁴ cycles/s

Explanation:

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20.What do carbon and silicon have in common?
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A 44.0 g sample of an unknown metal at 99.0 oC was placed in a constant-pressure calorimeter of negligible heat capacity contain
tatiyna

Answer:

C_m=0.474\frac{J}{g\°C}

Explanation:

Hello.

In this case, since this is a system in which the water is heated up and the metal is cooled down in a calorimeter which is not affected by the heat lose-gain process, we can infer that the heat lost by the metal is gained be water, it means that we can write:

Q_m=-Q_w

Thus, in terms of masses, specific heats and temperatures we can write:

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C_m=\frac{-m_wC_w(T_{eq}-T_w)}{m_m(T_{eq}-T_m)}

Plugging the values in and since the density of water is 1.00 g/mL so the mass is 80.0g, we obtain:

C_m=\frac{-80.0g*4.184\frac{J}{g\°C} (28.4\°C-24.0\°C)}{44.0g(28.4\°C-99.0\°C)}\\\\C_m=0.474\frac{J}{g\°C}

Best regards!

6 0
3 years ago
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