4 years ago

How many miles are in 96.00g of methane ?

Chemistry

1 answer:

yan [13]4 years ago

5 0

If i remember correctly, the answer is 7 mol

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A pot filled with snow is left on a hot stove for a while. What would happen?

s2008m [1.1K]

Answer:

it will melt

Explanation:

because the heat will observe it and melt

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3 years ago

When coal is burned to produce electricity, the electrical energy produced is less than the

zimovet [89]

Answer: it should be c or b

Explanation:

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3 years ago

At 25 °C, what is the hydroxide ion concentration, [OH–], in an aqueous solution with a hydrogen ion concentration of [H ] = 4.8

Gekata [30.6K]

H₂O = H⁺ + OH⁻

If the H⁺ ion is 2M, the OH⁻ ion is M.

So, the OH⁻ ion is 4.8 x 10⁻⁸ / 2 = 2.4 x 10⁻⁸

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4 years ago

How many moles are in 4.6 x 10^19 atoms? <br><br> *#27 is the question

velikii [3]

There are 0.000076 moles in 4.6 x 10^19 atoms.

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3 years ago

Hey guys, I need your help!<br><br> Calculate the percent of Lead in Lead IV oxide

o-na [289]

The percent by mass of Lead in Lead (IV) oxide ( $PbO_2$ ) is equal to 86.62%.

<u>Scientific data:</u>

Molar mass of Lead = 207.2 g/mol.

Molar mass of oxygen = 16 g/mol.

To calculate the percent by mass of Lead in Lead (IV) oxide ( $PbO_2$ ):

First of all, we would calculate the molar mass of Lead (IV) oxide ( $PbO_2$ );

$PbO_2 = 207.2 + 16(2)\\
\\
$

Lead (IV) oxide ( $PbO_2$ ) = 239.2 g/mol.

<h3>How to calculate percent by mass.</h3>

For the percent by mass of Lead, we would calculate it by using this formula:

$P = \frac{Mass}{Mass\;of\;compound} \times 100$

Substituting the parameters into the formula, we have;

$P = \frac{207.2}{239.2} \times 100\\
\\
P=0.8662 \times 100$

Percent mass of Lead = 86.62%

Read more on percent mass here: brainly.com/question/15182450

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2 years ago