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Alinara [238K]
3 years ago
5

Examine the reaction equation. Mg(OH)2(s) + HCl(aq) →H2O(l) + MgCl2(aq) What coefficients will balance the equation? A) 2, 4, 2,

2 B) 1, 2, 3, 1 C) 1, 1, 1, 1 D) 1, 2, 2, 1
Chemistry
2 answers:
r-ruslan [8.4K]3 years ago
6 0

Answer:

D

Explanation:

1, 2, 2, 1

mihalych1998 [28]3 years ago
5 0

Answer:

D

Explanation:

Mg(OH)2(s) + HCl(aq) →H2O(l) + MgCl2(aq)

Left Side

Mg = 1

O = 2

H = 3

Cl = 1

Right Side

Mg = 1

O = 1

H = 2

Cl = 2

Mg(OH)2(s) + 2HCl(aq) →2H2O(l) + MgCl2(aq)

Left Side

Mg = 1

O = 2

H = 4

Cl = 2

Right Side

Mg = 1

O = 2

H = 4

Cl = 2

D) 1, 2, 2, 1

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<u>Given:</u>

Concentration of HNO3 = 7.50 M

% dissociation of HNO3 = 33%

<u>To determine:</u>

The Ka of HNO3

<u>Explanation:</u>

Based on the given data

[H+] = [NO3-] = 33%[HNO3] = 0.33*7.50 = 2.48 M

The dissociation equilibrium is-

            HNO3   ↔    H+      +      NO3-

I            7.50               0                 0

C          -2.48          +2.48              +2.48

E            5.02            2.48              2.48

Ka = [H+][NO3-]/HNO3 = (2.48)²/5.02 = 1.23

Ans: Ka for HNO3 = 1.23

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3 years ago
Question 14 A student dissolves 1.5g of styrene C8H8 in 225.mL of a solvent with a density of 1.02/gmL . The student notices tha
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We must to know:

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