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masha68 [24]
3 years ago
15

How many total atoms in 3CuSO4

Chemistry
2 answers:
Nikolay [14]3 years ago
7 0

Answer:

8

Explanation:

Step2247 [10]3 years ago
5 0

Answer:

18

Explanation:

Element   Symbol   no of Atoms

Copper           Cu                3

Sulfur            S                3

Oxygen           O                  12

                                              18 = total

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il63 [147K]
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8 0
3 years ago
How many milliliters of a 0.7% stock solution are required to make 2 l of 0.2% solution? how many ml of solvent will be required
Ierofanga [76]
1. To solve this question, you need to equalize the mass of solute for both solution. The calculation would be:
mass of solute= volume*concentration

mass1=mass2
volume1 * concentration1 = volume2 * concentration2
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volume1 = 2000ml * (0.2%/0.7%)
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2. Since you already have the volume of stock needed, you just need to subtract it from the total solution volume to count the number of solvents needed.
new solution volume= stock volume + diluting solvent volume
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4 0
3 years ago
How many moles of sf6 are there in 459500000000000000 molecules of sf6
Vlada [557]

Answer : The number of moles of SF_6 is, 7.63\times 10^{-7} moles.

Solution :

As we know that,

1 mole contains 6.022\times 10^{23} number of molecules

As, 6.022\times 10^{23} number of molecules of SF_6 are present in 1 mole of SF_6

So, 4595\times 10^{14} number of molecules of SF_6 are present in \frac{4595\times 10^{14}}{6.022\times 10^{23}}=7.63\times 10^{-7} moles of SF_6

Therefore, the number of moles of SF_6 is, 7.63\times 10^{-7} moles.

5 0
3 years ago
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tatuchka [14]

Answer:

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Explanation:

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8 0
3 years ago
Which of the following always changes when a substance undergoes a chemical change?
vovangra [49]

Answer:

A. State of matter of the substance.

Explanation:

During a chemical change, the composition of matter always changes.

6 0
3 years ago
Read 2 more answers
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