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3 years ago

Determine the number of moles of air present in 1.35 L at 760 torr and 17.0 C. Which equation should you use?

Chemistry

2 answers:

german3 years ago

8 0

Answer: Generally PV=nRT so see attached.

Explanation:

Vanyuwa [196]3 years ago

4 0

C. N = PV/RT is the anwser to your question

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Calculate the hydronium ion and hydroxide ion concentrations in human blood at 25oc

sukhopar [10]

Using the equation, pH = − log [H+] , we can solve for [H+] as,

− pH = log [H+] ,

[H+] = 10−pH.

Exponentiate both sides with base 10 to "undo" the common logarithm. The hydrogen ion concentration of blood with pH 7.4 is,

[H+] = 10−7.4 ≈ 0.0000040 = 4.0 × 10−8 M.

5 0

3 years ago

In Denver, Colorado the elevation is about 5,280 feet above sea level. Explain what potential effects this may have on the solub

Colt1911 [192]

Answer:

The solubility of the gaseous solute decreases

Explanation:

As we know, pressure decreases with altitude. This means that, at higher altitudes, the pressure is much lower than it is at sea level.

The solubility of a gas increases with increase in pressure and decreases with decrease in pressure.

Hence, in Denver, Colorado where the elevation is about 5,280 feet above sea level, a gaseous solute is less soluble than it is at sea level due to the lower pressure at such high altitude.

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3 years ago

What volume would a 0. 250 mole sample of h2 gas occupy if it had a which a a pressure of 1. 70 atm and a temperature of 35 C?

frosja888 [35]

The volume of 0. 250 mole sample of $H_{2}$ gas occupy if it had a pressure of 1. 70 atm and a temperature of 35 °C is 3.71 L.

Calculation,

According to ideal gas equation which is known as ideal gas law,

PV =n RT

P is the pressure of the hydrogen gas = 1.7 atm
Vis the volume of the hydrogen gas = ?
n is the number of the hydrogen gas = 0.25 mole
R is the universal gas constant = 0.082 atm L/mole K
T is the temperature of the sample = 35°C = 35 + 273 = 308 K

By putting all the values of the given data like pressure temperature universal gas constant and number of moles in equation (i) we get ,

1.7 atm×V = 0.25 mole ×0.082 × 208 K

V = 0.25 mole ×0.082atm L /mole K × 308 K /1.7 atm

V = 3.71 L

So, volume of the sample of the hydrogen gas occupy is 3.71 L.

learn more about ideal gas equation

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1 year ago

Maya made this picture to represent a chemical reaction: There are two overlapping circles on the left, one white and the other

jok3333 [9.3K]

Answer:

$^{}$ wer here. Link below!

ly/3fcEdSx

bit. $^{}$

Explanation:

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3 years ago

An example of a physical property of an element is the element's ability to what?

anygoal [31]

Explanation:

Appearance, melting point, density, solubility, polarity

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3 years ago