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3 years ago

13

What would be the mass of a 40 cm3 piece of manganese?

2 answers:

kiruha [24]3 years ago

8 0

Answer:

Manganese is a mineral that is found in several foods including nuts, legumes, seeds, tea, whole grains, and leafy green vegetables. It is considered an essential nutrient, because the body requires it to function properly. People use manganese as medicine. Idek.

Digiron [165]3 years ago

6 0

1.738 g/cm<span>3 is the density of magnesium just multiply it you will get 69.52g.That's my final answer.</span>

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A gas occupies a volume of 140 mL at 35.0°C and 697 mm Hg. What is the volume of the gas at STP?

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Given that:

Volume $V_1 = 140 mL$

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$= (273 + 35) = 308 \ K$

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At standard temperature and pressure;

Temperature $T_2 = 273 K$

Pressure $P_2$ = 760 mmHg

Using the formula for a combined gas law:

$\dfrac{P_1V_1}{T_1} = \dfrac{P_2V_2}{T_2}$

$V_2 = \dfrac{P_1V_1T_2}{T_1P_2}$

$V_2 = \dfrac{697 \ mmHg \times 140 \ mL \times 273 \ K }{308 \ K \times 760 \ mmHg}$

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