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erica [24]
2 years ago
9

When using water displament to find the volume of an irregular shaped object we use the unit...

Chemistry
1 answer:
Gekata [30.6K]2 years ago
5 0
Yeah it would develop fire
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After being thoroughly stirred at 10.°C, which mixture is heterogenous?(1) 25.0 g of KCl and 100. g of H2O
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The answer is (2) KNO3. This depends on the solubility of these four compounds at 10℃. For NaCl, it is 35.8 g, For NaNO3, 80.8 g. KCl, 31.2 g. KNO3, 21.9g. So only KNO3 is less than 25.0 g.
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Through which material do sound waves tend to move fastest
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METAL

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Review the following chemical equation: Find the molar ratio between C6H6 to
Juli2301 [7.4K]

Answer:

\frac{1}{6}

Explanation:

Molar ratio is defined as the ratio of number of moles of reactants or products in a balanced chemical equation.

In this balanced equation, the number of C6H6 molecules react to form 12 CO2 molecules.

Thus, the molar ratio between C6H6 to  carbon will be equal to 2 moles of  C6H6 divided by 12 moles of CO2

\frac{2}{12}\\\frac{1}{6}

4 0
3 years ago
A sample of an unknown compound is vaporized at 180.°C. The gas produced has a volume of 2010.mL at a pressure of 1.00atm, and i
stiv31 [10]

<u>Answer:</u> The molar mass of the given unknown compound is 50.5 g/mol.

<u>Explanation:</u>

To calculate the volume of water, we use the equation given by ideal gas, which is:

PV=nRT

or,

PV=\frac{m}{M}RT

where,

P = pressure of sample = 1.00 atm

V = volume of sample = 2010 mL = 2.010 L   (Conversion factor: 1 L = 1000 mL)

m = Given mass of unknown compound = 2.73 g

M = Molar mass of unknown compound = ? g/mol

R = Gas constant = 0.0820\text{ L atm }mol^{-1}K^{-1}

T = temperature of sample = 180^oC=[180+273]K=453K

Putting values in above equation, we get:

1.00atm\times 2.010L=\frac{2.73g}{M}\times 0.0820\text{ L atm }mol^{-1}K^{-1}\times 453K\\\\V=50.45g/mol

Rounding off to 3 significant figures, we get the molar mass to be 50.5 g/mol.

Hence, the molar mass of the given unknown compound is 50.5 g/mol.

8 0
3 years ago
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