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3 years ago

What is the chemical formula of sodium carbonate?

Chemistry

1 answer:

Gekata [30.6K]3 years ago

6 0

Answer:

Na2CO3 is the formula for sodium carbornate

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If 43.1 g of O2 and 6.8 g of CO2 are placed in a 13.7 L container at 34 degrees C, what is the mixture of gasses?

jonny [76]

Answer:

The total pressure of the gas mixture = 2.76 atm

Note: The question is not complete. The complete question is as follow:

If 43.1 g of O2 and 6.8 g of CO2 are placed in a 13.7 L container at 34 degree Celsius , what is the pressure of the mixture of gases?

Explanation:

Mass of O₂ gas = 43.1 g, molar mass of O₂ gas = 32.0 g/mol

Number of moles of O₂ gas = 43.1/32.0 = 1.347 moles

Mass of CO₂ gas = 6.8 g, molar mass of CO₂ gas = 44.0 g

Number of moles of CO₂ gas = 6.8/44 = 0.155 moles

Total number of moles of gas mixture, n = (1.347 + 0.155) = 1.502 moles

Volume of gas mixture, V = 13.7 L

Temperature of gas mixture, T = 34 °C = (273.15 + 34) K = 307.15 K

Pressure of gas mixture = ?

Molar gas constant, R = 0.0821 liter·atm/mol·K.

Using the ideal gas equation: PV =nRT

P = nRT/V

P = (1.502 × 0.0821 × 307.15) / 13.7

P = 2.76 atm

Therefore, the total pressure of the gas mixture = 2.76 atm

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3 years ago

Which of the following describes an energy transformation from chemical to electrical to light energy?

Law Incorporation [45]

The answer is B. a flashlight uses a battery to operate.

The battery represents the chemical energy. This is converted into electricity, which is converted into light energy.

6 0

3 years ago

Read 2 more answers

Which of these scenarios involve a reaction that is at equilibrium

Tasya [4]

Reaction is producing more reactants than products

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3 years ago

Read 2 more answers

Part 2 please and explain please

vekshin1

1) 7.15 * 10^6

since the exponent of the scientific notation is positive, move 6 places to the right.

so, 7.15 * 10^6 = 7150000

2) 3.03 * 10^-8

Since the exponent of the scientific notation is negative, move the decimal point 8 places to the left.

so, 3.03 * 10^-8 = 0.0000000303

3) 4.9 * 10^-1

since the exponent of the scientific notation is negative, move 1 decimal place to the left.

so, 4.9 * 10^-1 = 0.49

4) 2.886 * 10^5

since the exponent of the scientific notation is positive, move 5 decimal places to the right.

so, 2.886 * 10^5 = 288600

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3 years ago

List or draw two ways to visually represent C6H14

KonstantinChe [14]

There are several ways to visually represent compounds. For this particular organic compound, we can use the skeletal formula and the expanded formula. The skeletal makes use of lines to show which atoms are bonded to each other. The expanded formula shows the species of the atoms and their bonding with other atoms. I have attached the two representations.

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3 years ago