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lapo4ka [179]
2 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]2 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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Please help guys need help
dmitriy555 [2]

Answer:

A) slope = 20.

B)  The slope of 20 dollars per hour means that for every hour, the price of the service call increases by 20 dollars (or you could say the price of the service call is 20 dollars every hour, both work.)

Step-by-step explanation:

Recall that slope is y2 - y1 / x2 - x1.

Excellent. We are provided with two points: (1, 60) and (3, 100). Let’s enter this into our formula.

Slope = (100 - 60) / (3 - 1) = 40 / 2 = 20.

Now, to determine what the slope means, we can look at the axis titles on the graph. The x axis title is hours, or time in hours. The y axis title is price of the service call in dollars. Therefore, the slope is price (in dollars) per time (in hours).

This can be restated as: The slope of 20 dollars per hour means that for every hour, the price of the service call increases by 20 dollars (or you could say the price of the service call is 20 dollars every hour, both work.)

Hope this helps!

7 0
3 years ago
5c + 3 ≥ 6x -8<br><br> Solve the following inequality for cc. Write your answer in simplest form.
irina [24]

Answer:

c≥2(x-2) ÷ 5

Step-by-step explanation:

5c+3≥6x-8

5c ≥6x-8-3

5c≥6x-12

c≥(6x-12) ÷ 5

c≥ 2(x-2) ÷5

3 0
2 years ago
What is the area of the figure, 29, 25, 20, 14,5,15
natka813 [3]

Answer:

60900

Step-by-step explanation:

multiply all the numbers

6 0
3 years ago
Read 2 more answers
Subtract the equating of 15 ÷ 3 from the sum of 33 and 7
Gnesinka [82]

33 + 7 = 40

15 / 3 = 5

Subtract the answer of the division problem from the sum of 33 and 7. Your answer would be:

40 - 5

Simplified:

35

7 0
3 years ago
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dusya [7]

Answer:

x = 41

Step-by-step explanation:

vertical angles are congruent , then

3x = 123 ( divide both sides by 3 )

x = 41

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1 year ago
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