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Agata [3.3K]
3 years ago
5

Calculate the molarity of 22.5 g of MgS in 829 mL of solution

Chemistry
1 answer:
krek1111 [17]3 years ago
5 0

Answer:18652.5

Explanation

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Archeologists can determine the age of artifacts made of wood or bone by measuring the amount of the radioactive isotope 14C pre
Ahat [919]

Answer: The age of the tool is 15539 years

Explanation:

Expression for rate law for first order kinetics is given by:

t=\frac{2.303}{k}\log\frac{a}{a-x}

where,

k = rate constant  

t = age of sample

a = let initial amount of the reactant = 100

a - x = amount left after decay process = \frac{15.5}{100}\times 100=15.5  

a) for completion of half life:

Half life is the amount of time taken by a radioactive material to decay to half of its original value.  

t_{\frac{1}{2}}=\frac{0.693}{k}

k=\frac{0.693}{5730yr}=0.00012yr^{-1}

b) for 15.5 % of original amount

t=\frac{2.303}{0.00012}\log\frac{100}{15.5}

t=15539years

Thus age of the tool is 15539 years

8 0
2 years ago
How many total atoms in 3CuSO4
Step2247 [10]

Answer:

18

Explanation:

Element   Symbol   no of Atoms

Copper           Cu                3

Sulfur            S                3

Oxygen           O                  12

                                              18 = total

5 0
2 years ago
Read 2 more answers
Can anyone help me I just have to name these<br> Cr(HSO2)6<br> Au(HTeO3)3
Mice21 [21]

Answer:

the first on is Chromium(VI) peroxide or chromium oxide peroxide

the second on it Hydrogen Carbonate

Explanation:

I hope this helped ;)

8 0
2 years ago
Why do we fill balloons with helium gas instead of oxygen gas
miss Akunina [59]

Answer: cause oxegeon is harmful then helium

Explanation:

3 0
3 years ago
24 g copper is submerged in water in a graduated cylinder,and the total volume increases by 2.7 mL. What is the density of coppe
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Answer:8.89

Explanation:

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2 years ago
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