CHEMISTRY COLLEGE

What coefficients must be added to balance the following reaction?_____ Pb + _____ H3PO4 yields _____ H2 + _____ Pb3(PO4)2

A: 3, 2, 1, 1

B: 3, 2, 2, 1

C: 3, 1, 3, 1

D: 3, 2, 3, 1

Answers

Answer 1
Answer:

D: 3, 2, 3, 1 The Pb3(PO4) comes from having 3 Pb and 2 H3PO4. The H2 comes from the 2H3PO4

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A weather system moving through the American Midwest produced rain with an average pH of 5.02. By the time the system reached New England, the rain it produced had an average pH of 4.66. How much more acidic was the rain falling in New England?

Answers

Answer:

The rain falling in New England is 2.29 times more acidic than the one in the American Midwest.

Explanation:

The acidity of a solution depends on the concentration of H⁺ ions ([H⁺]). We can calculate this concentration from the pH using the following expression.

pH = -log ([H⁺])

American Midwest

pH = -log ([H⁺])

5.02 = -log ([H⁺])

[H⁺] = antilog (-5.02) = 9.55 × 10⁻⁶ M

New England

pH = -log ([H⁺])

4.66 = -log ([H⁺])

[H⁺] = antilog (-4.66) = 2.19 × 10⁻⁵ M

The ratio of concentrations is:

(2.19 * 10^(-5) M  )/(9.55 * 10^(-6) M) =2.29

The rain falling in New England is 2.29 times more acidic than the one in the American Midwest.

The change in the acidity of the rain falling in New England is mathematically given as

r=2.29

What is the change in the acidity of the rain falling in New England?

Question Parameter(s):

American midwest pH of 5.02

New England  pH of 4.66

Generally, the equation for the pH  is mathematically given as

pH = -log ([H⁺])

Therefore American midwest

pH = -log ([H⁺])

5.02 = -log ([H⁺])

[H⁺] = antilog (-5.02) = 9.55 × 10⁻⁶ M

and New england

pH = -log ([H⁺])

4.66 = -log ([H⁺])

[H⁺] = antilog (-4.66) = 2.19 × 10⁻⁵ M

In conclusion, the concentration ratio is

r=(2.19 * 10^(-5) M )/(9.55 * 10^(-6) M)

r=2.29

Read more about pH value

brainly.com/question/15845370

How is the ocean important to human survival? restate the question​

Answers

Answer:

How is the ocean important to human survival? The air we breathe: The ocean produces over half of the world's oxygen and absorbs 50 times more carbon dioxide than our atmosphere. Climate regulation: Covering 70 percent of the Earth's surface, the ocean transports heat from the equator to the poles, regulating our climate and weather patterns

Explanation:

Is A and C correct?


I'm a little unsure of this question, but is it right?

Answers