2 years ago

How many molecules of oxygen gas are in 3.00 moles

Chemistry

1 answer:

nalin [4]2 years ago

5 0

3x6.022x1023 i think

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A block has a mass of 25 grams and a volume of 24.5 cm3 what is the<br> density of the block?

schepotkina [342]

Answer:

<h3>The answer is 1.02 g/cm³</h3>

Explanation:

The density of a substance can be found by using the formula

$density = \frac{mass}{volume} \\$

From the question

mass of block = 25 g

volume = 24.5 cm³

The density of the block is

$density = \frac{25}{24.5} \\ = 1.020408163...$

We have the final answer as

Hope this helps you

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2 years ago

Convert 45.5 mmHg into kPa

Karolina [17]

Answer:

for anapproximate result , divide the pressure value by 7.501

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2 years ago

The Haber Process synthesizes ammonia at elevated temperatures and pressures. Suppose you combine 1580 L of nitrogen gas and 459

Zepler [3.9K]

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The volume of reactant measured at STP left over is 409.9 L

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2 years ago

What is the molarity of an intravenous glucose solution prepared from 108 g of glucose in 2.0 L of solution? 0.018 mol/L 0.30 mo

scZoUnD [109]

Answer:

0.30 mol/L

Explanation:

Mass = 108 g

Molar mass of glucose = 180.156 g/mol

The formula for the calculation of moles is shown below:

$moles = \frac{Mass\ taken}{Molar\ mass}$

Thus,

$Moles= \frac{108\ g}{180.156\ g/mol}$

$Moles= 0.5995\ mol$

Given Volume = 2 L

$Molarity=\frac{Moles\ of\ solute}{Volume\ of\ the\ solution}$

$Molarity=\frac{0.5995}{2}$

<u>Molarity = 0.3 mol/L</u>

7 0

2 years ago

Please help anwser this question will rate and if 2 people anwser it will give out brainly

sleet_krkn [62]

All of the above. Hope this helps

6 0

2 years ago

Read 2 more answers