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lapo4ka [179]
3 years ago
13

The pH level of tomato juice is 4.2. What is the hydrogen-ion concentration [H+]| for tomato juice?

Mathematics
1 answer:
garri49 [273]3 years ago
4 0

Given:

pH = 4.2 of tomato

Required:

hydrogen-ion concentration [H+]| for tomato juice

Solution:

The formula for the pH relating hydrogen ion concentration is pH = -log[H+] where H+ is the hydrogen ion concentration. so, substitute the value of pH

pH = -log[H+]

4 = - log[H+]

-4 = log[H+]

10^-4 = [H+]

[H+] = 1x10^-4M

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GuDViN [60]

Whole, integer, and rational

3 0
3 years ago
Carol, Ann, and Liz each bought a toy fish. Carol's fish is 5 inches longer than Ann's fish. Liz's fish is 9 inches longer than
hram777 [196]

Answer:

The length of Ann's toy fish is 12 inches; the length of Carol's toy fish is 17 inches; and the length of Liz's toy fish is 33 inches.

Step-by-step explanation:

Let's say Carol's fish is c inches long, Ann's is a inches long, and Liz's is l inches long. Then:

c = 5 + a

l = 9 + 2a

a = 12

Plug 12 in for a to find c and l:

c = 5 + a = 5 + 12 = 17 inches

l = 9 + 2a = 9 + 2 * 12 = 9 + 24 = 33 inches

Thus:

The length of Ann's toy fish is 12 inches; the length of Carol's toy fish is 17 inches; and the length of Liz's toy fish is 33 inches.

6 0
2 years ago
I need help ASAP on number 8 b and c. Thank you
s344n2d4d5 [400]
I think you're having trouble because the equation you wrote for 8a has a slight typo.

The question says that the length is 9 less than twice the width. Your equation states the length is 9 times the width minus 2. So the length actually equals 2w – 9, meaning that w(2w – 9) = 180

Hope this helps! If you're still having trouble, let me know :)
6 0
3 years ago
I need helpppp thank you
anyanavicka [17]

Answer:

B. <

Step-by-step explanation:

you dont even have to reduce the fractions to compare the decimals cause 5 is bigger then 4 off the bat.

3 0
3 years ago
Read 2 more answers
Which value from the set (54,45,27,6) makes 54/x = 9 true?
OLga [1]

Answer:

x = 6

Step-by-step explanation:

54/6 is 9. This is the only correct one.

Hope it helps!

3 0
3 years ago
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