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julsineya [31]
3 years ago
7

The partial pressure of a gas is a inversely proportional to the temperature of the gas. b. directly proportional to the volume

of the gas. c. always constant during a chemical reaction. d. directly proportional to the number of moles of the gas. e. proportional to the gas constant, R.
Chemistry
1 answer:
vlabodo [156]3 years ago
3 0

Answer:

d. directly proportional to the number of moles of the gas.

Explanation:

The formula for the partial pressure of a gas is written as -

P = n * P ( total )

P = partial pressure of the gas ,

n = mole fraction of the gas ,

P ( total ) = Total pressure of the mixture of gas .

Hence , from the above equation ,

the partial pressure is directly proportional to the mole fraction , i.e. , on increasing the number of moles of gas , the partial pressure increases .

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6.022⋅1023

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El fluoruro de hidrógeno HF que se utiliza en
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Answer:

25.6g de HF son producidos

Explanation:

<em>...¿Cuánto HF es producido?</em>

Para resolver este problema debemos convertir la masa de cada reactivo a moles usando su masa molar. Como la reacción es 1:1, el reactivo con menor número de moles es el reactivo limitante. Con las moles del reactivo limitante podemos obtener las moles de HF y su masa así:

<em>Moles CaF2:</em>

Masa molar:

1Ca = 40g/mol

2F = 19*2 = 38g/mol

40+38 = 78g/mol

50g CaF2 * (1mol/78g) = 0.641 moles CaF2

<em>Moles H2SO4:</em>

Masa molar:

2H = 2g/mol

1S = 32g/mol

4O = 64g/mol

98g/mol

100g H2SO4 * (1mol / 98g) = 1.02 moles H2SO4

Como las moles de CaF2 < Moles H2SO4: CaF2 es reactivo limitante.

<em>Moles HF usando la reacción:</em>

0.641 moles CaF2 * (2mol HF / 1mol CaF2) = 1.282 moles HF

<em>Masa HF:</em>

Masa molar:

1g/mol + 19g/mol = 20g/mol

1.282 moles HF * (20g/mol) =

<h3>25.6g de HF son producidos</h3>
8 0
3 years ago
Which molecule is nonpolar and has a symmetrical shape hcl?
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HCl is considered as polar molecule and that is incorrect answer, The choices provided are A) HCl , B) CH₄ , C) H₂O, D) NH₃

And the correct answer is : B) CH₄

In case of H₂O and NH₃ the high difference in electronegativity between nitrogen or oxygen and hydrogen make the bonds acquire partial charges and become polar while in case of CH₄ the difference in electronegativity between carbon and hydrogen is only 0.4 so it considered as non-polar bond
also carbon connected from all directions with Hydrogens

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Answer: cf4

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Explanation:

When a soil lacks earthworm, it will be poorly aerated and organic matter will be lacking.

Earthworms burrow through the soil and leaves holes and pores around in the soil.

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