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soldier1979 [14.2K]
2 years ago
11

How many atoms are in 123 g of calcium

Chemistry
1 answer:
Keith_Richards [23]2 years ago
5 0

Answer:

Molar mass of Ca = 40 g / mol , given 123 g Ca is 123/40= 3.075 moles,

1 mole = 6.022 * 10^23 atoms, so 3.075 moles Ca= 18.51*10^23 atoms

Explanation:

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How many grams of lithium hypochlorite (LiClO) are there in 0.594 moles?
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Answer : The mass of lithium hypochlorite are, 34.7 grams.

Explanation : Given,

Moles of LiClO = 0.594 g

Molar mass of LiClO = 58.4 g/mol

Expression used :

\text{ Mass of }LiClO=\text{ Moles of }LiClO\times \text{ Molar mass of }LiClO

Now put all the given values in this expression, we get:

\text{ Mass of }LiClO=(0.594moles)\times (58.4g/mole)

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Which process in the light-dependent reactions results in the release of hydrogen ions, electrons, and oxygen?
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3 0
3 years ago
Read 2 more answers
The pOH of a solution is 9.21. Calculate the hydrogen ion concentration of the solution. Be sure to report your answer to the co
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Answer:

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Explanation:

Step 1: Data given

pOH = 9.21

Step 2: Calculate [OH-]

pOH = -log [OH-] = 9.21

[OH-] = 10^-9.21

[OH-] = 6.17 *10^-10

Step 3: Check if it's correct

pOH + pH = 14

[H+]*[OH-] = 10^-14

pH = 14 - 9.21 = 4.79

[H+] = 10^-4.79

[H+] = 1.62 *10^-5

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3 0
2 years ago
Choose the atom with:
nata0808 [166]

Answer:

a )Li

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Explanation:

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6 0
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