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Vesnalui [34]
2 years ago
10

13. An organic compound is found to contain 77.42% of C, 7.53% of H and

Chemistry
1 answer:
ivann1987 [24]2 years ago
8 0

Answer

7.53% 97% if you divide it you can get the answer

Explanation:

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Kryger [21]
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4) </span>2 K + MgBr2 = 2 KBr + Mg ( <span>single replacement )

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4 0
3 years ago
How many protons and electrons are present in the mg2+ ion? 1. 14 protons, 14 electrons 2. 12 protons, 10 electrons 3. 12 proton
Nataly_w [17]
There are 12<span> protons and </span>10<span> electrons in a </span><span>Mg<span>2+</span></span><span> ion, the normal amount of neutrons is </span>12<span>.</span>
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3 years ago
An aqueous sodium acetate, NaC2H3O2 , solution is made by dissolving 0.395 mol NaC2H3O2 in 0.505 kg of water. Calculate the mola
liq [111]

<u>Answer:</u> The molality of NaC_2H_3O_2 solution is 0.782 m

<u>Explanation:</u>

Molality is defined as the amount of solute expressed in the number of moles present per kilogram of solvent. The units of molarity are mol/kg. The formula used to calculate molality:

\text{Molality of solution}=\frac{\text{Moles of solute}}{\text{Mass of solvent (in kg)}} .....(1)

Given values:

Moles of NaC_2H_3O_2 = 0.395 mol

Mass of solvent (water) = 0.505 kg

Putting values in equation 1, we get:

\text{Molality of }NaC_2H_3O_2=\frac{0.395mol}{0.505kg}\\\\\text{Molality of }NaC_2H_3O_2=0.782m

Hence, the molality of NaC_2H_3O_2 solution is 0.782 m

8 0
3 years ago
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C and D

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4 0
2 years ago
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How many moles of butane (C4H10) must be burned in an excess of O2 to produce
Sedbober [7]

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From equation you can calculate x in a following way:

2/x = 8/25. 8x = 50. And x = 6,25

4 0
3 years ago
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