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2 years ago

8

a clown in the park gave a child a balloon filled with 7.00 L of helium at 301 K. What will the volume of the balloon be when th

e child takes it into an air conditioned house at 295 K?

1 answer:

dybincka [34]2 years ago

6 0

Answer:

6.9L

Explanation:

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A balloon is filled with 35.0 L of helium in the morning when the temperature is 35.00 oC.

nexus9112 [7]

Answer: V = 33.9 L

Explanation: We will use Charles Law to solve for the new volume.

Charles Law is expressed in the following formula. Temperatures must be converted in Kelvin.

V1 / T1 = V2 / T2 then derive for V2

V2 = V1 T2 / T1

= 35 L ( 308 K ) / 318 K

= 33.9 L

5 0

3 years ago

Determine the mass in grams of 3.75 x 10^21 atoms of zinc. (the mass of one mole of zinc is 65.39 g)

Nastasia [14]

Answer: The mass in $3.75 \times 10^{21}$ atoms of zinc is 0.405 g.

Explanation:

Given: Atoms of zinc = $3.75 \times 10^{21}$

It is known that 1 mole of every substance contains $6.022 \times 10^{23}$ atoms. So, the number of moles in given number of atoms is as follows.

$Moles = \frac{3.75 \times 10^{21}}{6.022 \times 10^{23}}\\= 0.622 \times 10^{-2}\\= 0.0062 mol$

As moles is the mass of a substance divided by its molar mass. So, mass of zinc (molar mass = 65.39 g/mol) is calculated as follows.

$Moles = \frac{mass}{molar mass}\\0.0062 mol = \frac{mass}{65.39 g}\\mass = 0.405 g$

Thus, we can conclude that the mass in $3.75 \times 10^{21}$ atoms of zinc is 0.405 g.

6 0

3 years ago

Sceince problem i need help

Cerrena [4.2K]

D. due to the the water it will bring sand with the water there for us is D.

3 0

2 years ago

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What element is found in solid form within earth's crust

ioda

Answer:

silicon

Explanation:

5 0

3 years ago

Will give brainliest to best answer..

Tasya [4]

I have attached the answer here. hope this helps!

let me know if you have any question

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3 years ago