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skelet666 [1.2K]
3 years ago
6

20 POINTS TO WHO ANSWERS THIS

Chemistry
1 answer:
Xelga [282]3 years ago
3 0

answer: D

Here is a list of the most common ways to speed up a chemical reaction

Increase the temperature (reactions that absorb energy)

Decrease the temperature (Reactions that release energy)

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A valid lewis structure of SO2 cannot be drawn without violating the octet rule.



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Read 2 more answers
What is the molarity of a solution that contains 122g of MgSO4 n 3.5L of solution?​
tatiyna

Answer:

0.29mol/L or 0.29moldm⁻³

Explanation:

Given parameters:

Mass of MgSO₄ = 122g

Volume of solution = 3.5L

Molarity is simply the concentration of substances in a solution.

Molarity = number of moles/ Volume

>>>>To calculate the Molarity of MgSO₄ we find the number of moles using the mass of MgSO₄ given.

Number of moles = mass/ molar mass

Molar mass of MgSO₄:

Atomic masses: Mg = 24g

S = 32g

O = 16g

Molar mass of MgSO₄ = [24 + 32 + (16x4)]g/mol

= (24 + 32 + 64)g/mol

= 120g/mol

Number of moles = 122/120 = 1.02mol

>>>> From the given number of moles we can evaluate the Molarity using this equation:

Molarity = number of moles/ Volume

Molarity of MgSO₄ = 1.02mol/3.5L

= 0.29mol/L

IL = 1dm³

The Molarity of MgSO₄ = 0.29moldm⁻³

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3 years ago
Are all atoms of the same element identical? Back up your answer with evidence and examples. pls help
Schach [20]
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5 0
3 years ago
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