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2 years ago

- Your science class is going to play a game of tug-of-war and you need to divide up the

Chemistry

1 answer:

ladessa [460]2 years ago

8 0

Answer:

I will measure by weight and make sure the weight of each pupils on both teams are the same

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Choose all the answers that apply.

AnnZ [28]

Answer:

accepting your faults

seeing exercise as a treat

looking at your ultimate goal

Explanation:

8 0

2 years ago

Valeric acid, HC5H9O2 (Ka = 1.5 ✕ 10−5), is used in the manufacture of magnesium valerate, a nerve-calming agent. What is the hy

Studentka2010 [4]

Answer:

$[H^+]=0.00332M$

Explanation:

Hello,

In this case, considering the dissociation of valeric acid as:

$HC_5H_9O_2 \rightleftharpoons C_5H_9O_2 ^-+H^+$

Its corresponding law of mass action is:

$Ka=\frac{[H^+][C_5H_9O_2^-]}{[HC_5H_9O_2]}$

Now, by means of the change $x$ due to dissociation, it becomes:

$Ka=\frac{(x)(x)}{0.737-x}=1.5x10^{-5}$

Solving for $x$ we obtain:

$x=0.00332M$

Thus, since the concentration of hydronium equals $x$ , the answer is:

$[H^+]=x=0.00332M$

Best regards.

7 0

2 years ago

What is the moden periodic law

Zarrin [17]

Answer:

Here's what I get

Explanation:

The modern periodic law states that the physical and chemical properties of the elements are periodic functions of their atomic numbers.

5 0

3 years ago

Which individual elements make up the following common

Sophie [7]

Answer:

I think it will carbon hope it helps

7 0

2 years ago

Hans observed properties of four different waves and recorded observations about each one in his chart.

Irina18 [472]

Answer/Explanation:

Wave W is being diffracted, Wave X is being reflected, and waves Y and Z are being refracted.

8 0

2 years ago

Read 2 more answers