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Sunny_sXe [5.5K]
2 years ago
10

a sample of helium gas has a volume of 200.0 mL at 730mm Hg pressure. What pressure, in atm is needed to reduce the volume at a

constant temperature to 50.0 mL
Chemistry
1 answer:
Akimi4 [234]2 years ago
3 0

Explanation:

The question had been explained.

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When cool, dense air come over the water flows inland, it's called a?
ruslelena [56]
The answer to your question is Sea Breeze.
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3 years ago
Why Ammonia is nut dried by passing through concentrated H2SO4.​
STALIN [3.7K]

Answer:

Because it is absorbed by conc . H . SO , to form ammonium sulphate.

6 0
3 years ago
True or false: If you rub things together, electrons can move from one atom to another?
Sedbober [7]

Answer:

true

Explanation:

there is a transfer of electrons from one material to the other material. This causes one object to become positively charged (the electron loser) and the other object to become negatively charged (the electron gainer).

5 0
3 years ago
Read 2 more answers
How many moles are in 3.01 x 10^23 atoms of zinc?
Lerok [7]

Answer:

<h2>0.5 moles</h2>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

n =  \frac{N}{L} \\

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

n =  \frac{3.01 \times  {10}^{23} }{6.02 \times  {10}^{23} }  =  \frac{3.01}{6.02}  \\  = 0.5

We have the final answer as

<h3>0.5 moles</h3>

Hope this helps you

6 0
2 years ago
What is the initial temperature (in Celsius) of a 675 ml balloon if the
RoseWind [281]

Answer: 127 (3.s.f)

Explanation:

Boyle's law states that Volume x pressure = constant

Therefore let's first find the constant: 45 x 1900 = 85500

Then lets plug 675 ml and 85500 into the equation above:

675 x C = 85500

C = 127 (3 s.f.)

7 0
3 years ago
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