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2 years ago

I have 3 questions, it should be worth 50 points, please help me lol I'm stuck :') I'll give Brainliest to the correct answerer.

Mathematics

2 answers:

kow [346]2 years ago

7 0

Answer:

yes

x/3

Step-by-step explanation:

those should be right lol

kvasek [131]2 years ago

6 0

Answer: yes, no, and i think x/3

Step-by-step explanation:

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2. The alkalinity of a fluid (pH) can be modeled in terms of its hydrogen ion concentration (H+, measured in moles/liter) of the

nataly862011 [7]

Given the equation:

$pH=-log\mleft(H^+\mright)$

You know that a lab technician finds that a sample of fluid has this pH:

$pH=4.5$

Then, in order to find the hydrogen ion concentration of the fluid, you need to follow these steps:

1. Substitute the pH given in the exercise into the equation:

$4.5=-log(H^+)$

Multiply both sides by -1:

$-4.5=\log (H^+)$

2. Solve for:

$H^+$

Remember that, by definition:

$\log _b\mleft(c\mright)=a\Rightarrow b^a=c$

In this case, you can identify that:

$\begin{gathered} a=-4.5 \\ b=10 \\ c=H^+ \end{gathered}$

Hence, substituting values and simplifying, you get:

$\begin{gathered} b^a=c \\ 10^{-4.5}=H^+ \\ H^+=0.00003162278\text{ }\frac{moles}{liter} \end{gathered}$

Therefore, the answer is:

$H^+=0.00003162278\text{ }\frac{moles}{liter}$

4 0

2 years ago

Help needed please!!!!!!!!

Alisiya [41]

I think the answer is B. Hope I helped

3 0

3 years ago

What is the lcm of 2,5,6,9

prisoha [69]

the lcm is 90 hope this helps

5 0

3 years ago

Which of the following is a solution to this inequality? Y<2/3x+2

Alborosie

Answer:

(1,2)

Step-by-step explanation:

I graphed the inequality on the graph below and found which answer was a solution.

If this answer is correct, please make me Brainliest!

7 0

3 years ago

What was the original price if after increasing by 60% it became $8?

Nesterboy [21]

The answer is 5a pretty sure

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3 years ago