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3 years ago

The equation for the pH of a substance is pH = -log[H'], where H+ is the concentration of hydrogen ions. A basic

Mathematics

2 answers:

Oksanka [162]3 years ago

8 0

Answer:

it's b.

Step-by-step explanation:

scoundrel [369]3 years ago

7 0

Answer:

9 (approximately)

Step-by-step explanation:

Approximate difference

= pH of basic solution - pH of acidic solution

= 11.2 - 2.4

= 8.8

= 9 (approximately)

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(100 - 25) / 5
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2 years ago

How many solutions does this system of equations have?

guajiro [1.7K]

Answer:

1 solution

Step-by-step explanation:

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2 years ago

The championship record for baseball in a certain year was 52 games won, 14 lost. What percent of the games were won?

marshall27 [118]

73.0769230769% of the games were won

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3 years ago

Read 2 more answers

(6x10^2)/(3x10-5) help what is this in standard form?

Tasya [4]

Answer:

The standard form of $\frac{6 \times 10^{2}}{3 \times 10^{-5}}$ is 20,00,0000

Solution:

Given that $\frac{6 \times 10^{2}}{3 \times 10^{-5}}$ ---- eqn 1

To write $\frac{6 \times 10^{2}}{3 \times 10^{-5}}$ in standard form,

We know that $\bold{\frac{1}{a^{-m}} = a^{m}}$ .So $\frac{1}{10^{-5}}$ becomes $10^{5}$ .

Now eqn 1 becomes,

$= \frac{6 \times 10^{2}}{3} \times 10^{5}$ ----- eqn 2

We know that $\bold{a^{m} \times a^{n}=a^{m+n}}$ , so $10^{2} \times 10^{5} = 10^{7}$

Now eqn 2 becomes,

$= \frac{6}{3} \times 10^{7}$

$= 2 \times 10^{7}$ ---- eqn 3

Expanding $10^{7}$ :

Here 10 is the base term and 7 is the exponent value. So base term 10 is multiplied by itself 7 times.

$10^{7} = 10 \times 10 \times 10 \times 10 \times 10 \times 10 \times 10$

Now eqn 3 becomes,

$= 2 \times 10 \times 10 \times 10 \times 10 \times 10 \times 10 \times 10$

= 20,00,0000

Hence the standard form of $\frac{6 \times 10^{2}}{3 \times 10^{-5}}$ is 20,00,0000

6 0

3 years ago

Simplify the expression. Can someone explain to me how to get the answer? Thanks!

Lynna [10]

Answer:

11x^2+2x+9

Step-by-step explanation:

2+(2+6)⋅x^2+2x+3x^2+7

2+(8)⋅x^2+2x+3x^2+7

2+8x^2+2x+3x^2+7

9+8x^2+2x+3x^2

11x^2+2x+9

3 0

3 years ago