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Maslowich
2 years ago
7

How many moles of CO2 are in 54.3 g of CO2 ?

Chemistry
1 answer:
dimulka [17.4K]2 years ago
8 0

Answer:

There is actually 1 mole in 54.3 g of CO2

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At 19 °C, the vapor pressure of pure ethanol is 40.0 mmHg.<br> What is the pressure in atm?<br> atm
m_a_m_a [10]

Answer:

0.05263158 atm

Explanation: mmHg to Atmosphere Conversion Example. Task: Convert 975 mmHg to atmospheres (show work) Formula: mmHg ÷ 760 = atm Calculations: 975 mmHg ÷ 760 = 1.28289474 atm Result: 975 mmHg is equal to 1.28289474 atm. This is an example for how i got the answer.

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Answer:

A. boiling point

Explanation:

The correct answer is;

A. boiling point

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This option is wrong because the melting point is the temperature at which a solid undergoes a phase change to a liquid.

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8 0
3 years ago
A collection of pennies was investigated. 10.00% were found to have been minted in San Francisco with an average mass of 2.15 g
german

The average mass of the pennies in the sample is 2.16 g.

We have a set of pennies from which 10.00% have an average mass of 2.15 g and 90.00% have an average mass of 2.156 g. The average mass (am) of the whole set is a weighted average, that considers the mass (m) and the percentage (perc) of each group. We can calculate it using the following expression.

am=\frac{\Sigma m \times perc  }{100 \%} = \frac{2.15g \times 10.00\% + 2.156 g \times 90.00\% }{100\%} = 2.1554 g \approx 2.16 g

The average mass of the pennies in the sample is 2.16 g.

You can learn more about weighted average here: brainly.com/question/18554478

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2 years ago
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Answer:

A

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More electrons than protons, thus giving the atom an overall charge of -2

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3 years ago
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