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Salsk061 [2.6K]
3 years ago
13

What is the percent composition of Cs in CsPO4?

Chemistry
1 answer:
Kay [80]3 years ago
3 0

Answer:

58.3%

Explanation:

The formula of the compound is given as:

     CsPO₄  

Now, the percentage composition of Cs in the compound is = ?

So;

To find this parameter, find the molar mass of the compound:

  Molar mass of  CsPO₄   = 132.9 + 31 + 4(16)  = 227.9g/mol

Percentage composition of Cs= \frac{132.9}{227.9}  x 100   = 58.3%

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2. Calculate the mass of 3.47x1023 gold atoms.
lapo4ka [179]

3.47 x 10^{23} atoms of gold have mass of 113.44 grams.

Explanation:

Data given:

number of atoms of gold = 3.47 x 10^{23}

mass of the gold in given number of atoms = ?

atomic mass of gold =196.96 grams/mole

Avagadro's number = 6.022 X 10^{23}

from the relation,

1 mole of element contains 6.022 x 10^{23} atoms.

so no of moles of gold given = \frac{3.47 X 10^{23}  }{6.022 X 10^{23} }

0.57 moles of gold.

from the relation:

number of moles = \frac{mass}{atomic mass of 1 mole}

rearranging the equation,

mass = number of moles x atomic mass

mass = 0.57 x 196.96

mass = 113.44 grams

thus, 3.47 x 10^{23} atoms of gold have mass of 113.44 grams

3 0
3 years ago
I need help please!Perform the following conversion. Make sure your answer has the correct number of significant digits.
Nuetrik [128]

Answer:

3220000

Explanation:

1kg=10^6 Gg

3.22×10^6

5 0
3 years ago
1. Carbon is important because:
nikklg [1K]

Answer:

B

Explanation:

All organic material has carbon.

3 0
3 years ago
Read 2 more answers
Which of the following hypotheses cannot be tested using the scientific method
Arturiano [62]
I believe it's answer #3. Logically, at least.

You can test #1 through trial and error.
You can experiment #2 also through trial and error.
You cannot test #3 through trial and error, because that would be catastrophic.
You can test #4 through a survey and individual study and data collection.
7 0
3 years ago
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Of Be3+ , Li2+ , and He1+
Mama L [17]

Answer:He 1+

Explanation:

Both Hydrogen atom and helium ion are one electron species. Hence we expect the spectrum of the helium ion to closely resemble that of hydrogen atom also containing one valence electron.

5 0
2 years ago
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