3 years ago

Could someone help me with this? No links, will give brainliest.

Chemistry

1 answer:

Ganezh [65]3 years ago

6 0

Answer: I think it represents the SiO

Explanation:

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Density of a liquid if 500.cm3 weighs 752.0 g

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4 years ago

A 280 mL bubble contains 0.283 g of a gas at 0.951 atm and 25.0°C What is the molar mass of this gas?

tekilochka [14]

Answer: 28.3 g/mol

Explanation:

According to the ideal gas equation:'

$PV=nRT$

P= Pressure of the gas = 0.951 atm

V= Volume of the gas = 280 mL = 0.28 L (1L=1000 ml)

T= Temperature of the gas = 25°C=(25+273)K=298 K (0°C = 273 K)

R= Value of gas constant = 0.0821 Latm/K mol

$n=\frac{PV}{RT}=\frac{0.951\times 0.28L}{0.0821 \times 298}=0.010moles$

To calculate the moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}$

$0.010=\frac{0.283}{\text {Molar mass}}$

${\text {Molar mass}}=28.3g/mol$

Thus the molar mass of the gas is 28.3 g/mol.

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3 years ago

Aplant whose seeds are exposed rather than protected by fruit is called sli)

Sergeu [11.5K]

Answer:

Ik Gymnosperms

Explanation:

term that means naked seeds

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Electron configurations are a shorthand form of an orbital diagram, describing which orbitals are occupied for a given element.

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Explanation:

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3 years ago

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