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Troyanec [42]
3 years ago
7

What is the percentage of magnesium sulfate in MgSO4 x 7H2O.

Chemistry
1 answer:
son4ous [18]3 years ago
5 0
48.78%
Percentage of MgSO4 = mass of MgSO4/ mass of sample (MgSO4. 7H20) and multiply it by 100.

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Mrac [35]
<span>There is a direct correlation between the period number and the energy level for valence electrons. For example, the H and He elements, in period 1, have their outer electrons in the energy level "1". This continues down the rows: all the elements in period 2 have their principal energy level as n = 2, period 3 has n = 3, and so on.</span>
3 0
3 years ago
The table shows the number of reactants and products present during two separate chemical reactions.
aleksandr82 [10.1K]

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Explanation:

A decomposition reaction is defined as a reaction where a compound dissociates into two or more atoms.

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6 0
3 years ago
2Li + H2SO4=Li2SO4 + H2 How many liters of hydrogen gas, H2 at STP can be produced from 3.0 moles of Li? The molar volume of a g
Gemiola [76]

Answer:

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Explanation:

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2 mole of Li gives  1 mole of H2 gas

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3 mole of Li will give 1.5 mole H2 gas

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7 0
3 years ago
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Bicarbonate of soda  (Baking soda)​ - Pure Substance

6 0
2 years ago
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Agata [3.3K]

Answer: secondary structure

Explanation:

5 0
3 years ago
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