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Greeley [361]
3 years ago
6

Which of the following is an elastic force

Chemistry
1 answer:
AleksandrR [38]3 years ago
8 0

Answer:

C is the correct answer

Explanation:

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I need part 1 and 2 please , just separate answers
Vladimir79 [104]

First, we have to remember the molarity formula:

M=\text{ }\frac{moles\text{ of solute}}{L\text{ solution}}

Part 1:

In this case, our solute is sodium nitrate (NaNO3), and we have the mass dissolved in water, then we have to convert grams to moles. For that, we need the molecular weight:

M.W_{NaNO_3}=\text{ 23+14+16*3= 85 g/mol}

Then, we calculate the moles present in the solution:

3.976\text{ g NaNO}_3\text{ * }\frac{1\text{ mol}}{85\text{ g}}=\text{ 0.04678 mol NaNO}_3

Now, we have the necessary data to calculate the molarity (with the solution volume of 200 mL):

M=\frac{0.04678\text{ mol}}{200\text{ mL*}\frac{1\text{ L}}{1000\text{ mL}}}=\text{ 0.2339 M}

The molarity of this solution equals 0.2339 M.

Part 2:

In this case, we have the same amount (in moles and mass) of sodium nitrate, but a different volume of solution, then we only have to change it:

M=\text{ }\frac{0.04678\text{ mol}}{275\text{ mL *}\frac{1\text{ L}}{1000\text{ mL}}}=\text{ 0.1701 M}

So, the molarity of this solution is 0.1701 M.

5 0
11 months ago
What happens to the hydrogen ion (H+) concentration as an aqueous
padilas [110]

Answer:

Explanation:

It can be determined by measuring the Ph. D is incorrect.

C: is wrong because if you are making something acidic, you are increasing the H+

B: is the correct answer.

A: pH decreases. H+ increases which makes the Ph decrease. It is an oddity of the formula that makes this happen.

7 0
2 years ago
Read 2 more answers
Which projectiles will be visibly affected by air resistance when they fall?
Anika [276]
All of the above will be affected by air resistance, but the most obvious will be the balloon or leaf.
Hope it helps somewhat!
8 0
3 years ago
Read 2 more answers
CH4-&gt;C2H6-&gt;C2H5Cl-&gt;C4H10-&gt;C4H9Br-&gt;C4H8<br> Help me please solve this
Nookie1986 [14]
What are you solving for?
C
H
I
R

7 0
2 years ago
Convert 625 mg to kg.
svetlana [45]

Answer: 0.000625

Explanation:

If you don't know, one Milligram is equivalent to 0.000001 Kilograms. Hence, we'll multiply 625 by 0.000001.

With that being said, 625 times 0.000001 will equal to 0.000625.

Don't forget to add the units.

Milogram unit ⇒ mg

Kilogram unit ⇒ kg

Finally, your grand answer is 0.000625.

<em>Please comment down below for any questions about my answer.</em>

4 0
2 years ago
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