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katen-ka-za [31]
3 years ago
10

_______ cause(s) empty space to expand and gravitational pull to weaken

Chemistry
1 answer:
igomit [66]3 years ago
4 0
The answer is Dark Energy. It<span> counters gravitational pull and causes empty space to expand at an accelerated rate.</span>
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Order the terms according to the path followed by oxygen during cellular respiration.​
MArishka [77]

Answer:

Outside air

Nose

Lungs

Bloodstream

Cell

Explanation:

We breathe in oxygen from the outside air in through our nose and it travels to our lungs. Inside our lungs, we have Avioli's that diffuse oxygen into our bloodstream and the bloodstream helps the oxygen travel into our cells.

Hope this helps :)

8 0
3 years ago
11.1 ml sample of Neon Gas is at a pressure of 811 torr What volume will
yarga [219]

Answer:

C.106 ml

Explanation:

Boyle's Law P₁V₁ = P₂V₂ , but we need to make sure our pressure is in the same units, in this case we will convert torr to atm

811 torr * (1atm/760torr) = 1.067105263 atm

P₁V₁ = P₂V₂

(1.067105263 atm)(11.1 mL) = (0.112 atm)(V₂)

V₂ = 11.84486842/0.112

V₂ = 105.7577538 mL = 106 mL

7 0
3 years ago
1 moL of a substance is equal to 6.02 x 1023 atoms or particles<br> True or false
dimulka [17.4K]

1 moL of a substance is equal to 6.02 x 10^23 atoms or particles , it true statement. This number is known as Avogadro number.  

5 0
3 years ago
If 65.5 ml of HCl stock solution is used to make 450 ml of a 0.675 M HCl dilution, what is the molarity of the stock solution ?
Talja [164]

<u>Answer:</u> The molarity of the stock solution is 4.64 M

<u>Explanation:</u>

To calculate the molarity of the diluted 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 stock solution

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

We are given:

M_1=?M\\V_1=65.5mL\\M_2=0.675M\\V_2=450mL

Putting values in above equation, we get:  

M_1\times 65.5=0.675\times 450\\\\M_1=4.64M

Hence, the molarity of the stock solution is 4.64 M

8 0
3 years ago
a chemist want to make a solution of 3.4M HCl there are tow solutions of HCl that he can find on the shelf. one has a concentrat
steposvetlana [31]

Answer:

The most concentrated one, 6.0 M.

Explanation:

A simple and reliable way to produce a solution of HCl (or anything else, for that matter) is to use a more concentrated solution and dilute it.

In this case the chemist could take a portion of the 6.0 M solution and dilute it by adding water, until the concentration is 3.4 M.

Such a process would not be possible with the 2.0 N (which is the same as 2.0 M for HCl) solution.

7 0
3 years ago
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