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sashaice [31]
3 years ago
15

The atmosphere traps a part of the Sun’s heat that is reflected from Earth’s surface. This effect, called the greenhouse effect,

is primarily responsible for the moderate average temperatures on Earth. What component of the atmosphere causes this to occur?
Chemistry
1 answer:
Oliga [24]3 years ago
7 0

This occurs in Mars.

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Calculate the percentage of water of crystallisation in MgSO⁴ 7H²O
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Answer:

Formula of EPSOM salt = MgSO4.7H2O

molecular mass of MgSO4.7H2O = atomic mass of Mg + atomic mass of S + 4 × atomic mass of O + 7 { 2 × atomic mass of H + atomic mass of O }

= 24 + 32 + 4× 16 + 7{ 2 × 1 + 16 } g/mol

= (24 + 32 + 64+ 126 ) g/mol

= 246 g/mol

molecular mass of total water = 7 × ( 2× atomic mass of H + atomic mass of O )

= 7 × 18 = 126 g/mol

now ,

% mass of H2O in EPSOM salt = {total molar mass of H2O/molar mass of Epsom salts }× 100

= {126/246 } × 100

= 12600/246

= 51.21 %

Explanation:

i have done it hope it helps

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