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3 years ago

In order for an object to accelerate, what must change?

Chemistry

1 answer:

shepuryov [24]3 years ago

8 0

Answer:

your speed?

Explanation:

you need to reach some speed before your body begins to accelerate

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Applicable in case of strong acid–

liq [111]

Answer:

A. i, ii, iii

Explanation:

A strong acid gets completely ionized in aqueous solutions releasing a large number of hydrogen ions. It also has a sour taste.

5 0

3 years ago

A chemist must prepare 550 mL of hydrochloric acid solution with a pH of 1.60 at 25°C .

hammer [34]

<u>Answer:</u> The volume of concentrated hydrochloric acid solution is 1.73 mL

<u>Explanation:</u>

To calculate the hydrogen ion concentration of the solution, we use the equation:

$pH=-\log[H^+]$

We are given:

pH = 1.60

Putting values in above equation, we get:

$1.60=-\log [H^+]$

$[H^+]=10^{-1.60}=0.0251M$

To calculate the volume of the concentrated solution, we use the equation:

$M_1V_1=M_2V_2$

where,

$M_1\text{ and }V_1$ are the molarity and volume of the concentrated HCl solution

$M_2\text{ and }V_2$ are the molarity and volume of diluted HCl solution

We are given:

$M_1=8.0M\\V_1=?mL\\M_2=0.0251M\\V_2=550mL$

Putting values in above equation, we get:

$8.0\times V_1=0.0251\times 550.0\\\\V_1=\frac{0.0251\times 550}{8.0}=1.73mL$

Hence, the volume of concentrated hydrochloric acid solution is 1.73 mL

6 0

3 years ago

If you have a gold coin that contains 0.637 moles of gold, how many grams of gold does it contain?

mario62 [17]

The answer is 5 gold token from Chuck E. Cheese

8 0

3 years ago

6 moles of H2O is equal to how many molecules?

alexandr1967 [171]

6 miles of H2O is equal to 12 Hydrogen molecules and 6 oxygen molecules. Equaling 18 in total.

5 0

3 years ago

How did President Wilson anger civil rights advocates?

gogolik [260]

Answer:

He put segregationists in charge of federal agencies...

Explanation:

...

6 0

2 years ago

Read 2 more answers