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Oduvanchick [21]
2 years ago
15

Based on the information in the passage, what is true of gases?

Chemistry
1 answer:
luda_lava [24]2 years ago
7 0
1: True
2: True
3: False
4: False

(Question 2 might not be true, not sure)
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I need help with my homework.Calculate the number of formula units in: 41.5 grams CaBr2
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Answer:

\text{ }1.25\times10^{23}\text{ formula units}

Explanation:

Here, we want to calculate the number of formula units in the given molecule

We start by getting the number of moles

To get the number of moles, we have to divide the mass given by the molar mass

The molar mass is the mass per mole

The molar mass of calcium bromide is 200 g/mol

Thus, we have the number of moles as follows:

\frac{41.5}{200}\text{ = 0.2075 mol}

The number of formula units in a mole is:

1\text{ mole = 6.02 }\times10^{22}\text{ formula units}

The number of formula units in 0.2075 mole will be:

0.2075\text{ }\times6.02\times10^{23}\text{ = }1.25\times10^{23}\text{ formula units}

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timofeeve [1]

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Help your self

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