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3 years ago

Suppose that a sample of gas occupies 187 mL

Chemistry

1 answer:

drek231 [11]3 years ago

7 0

Answer:

V2 = 90.7 mL

Explanation:

pressure and volume are inversely proportional, if the pressure is increased, the volume will decrease. In an isothermal process:

p1V1 = p2V2

V2 = p1V1/p2 = (277 torr×187 mL)/571 torr

V2 = 90.7 mL

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Answer:

seasons experienced by the northern and southern hemisphere always differ by six months when it is summer in the northern hemisphere, it is winter in the southern hemisphere

Explanation:

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Define an ion in chemistry

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Ion is an atom or molecule with a net electric charge due to loss or gain of one or more electrons.

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Based on the kinetic theory, which statement is true? Matter consists of only large molecules. Matter is made up of only charged

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The Goodyear blimp contains 5.7 x 10^6 L of helium at 25 degrees Celsius and 1 atm. What is the mass in grams of the helium insi

anygoal [31]

Answer:

1.72x10⁻⁵ g

Explanation:

To solve this problem we use the PV=nRT equation, where:

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R = 0.082 atm·L·mol⁻¹·K⁻¹

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And we solve for n:

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3 years ago

How many molecules of sodium oxide will be created if 275 grams of sodium reacts with excess oxygen?

musickatia [10]

3.6 x 10²⁴molecules

Explanation:

Given parameters:

Mass of Na = 275g

Unknown:

Number of molecules of Na₂O =

Solution:

Since sodium is the limiting reactant, we first use it to find the number of mole of the Na₂O and transpose it into finding the number of molecules.

Given equation:

4Na + O₂ → 2Na₂O

Since the equation is balanced, let us find the number of moles of Na;

Number of moles = $\frac{mass}{molar mass}$ = $\frac{275}{23}$ = 11.96moles

From the equation of the reaction;

4 mole of Na produced 2 moles of Na₂O

11.96 moles of Na will produce $\frac{11.96 x 2}{4}$ = 6moles

1 mole of a substance = 6.02 x 10²³ molecules

6 moles of Na₂O = 6 x 6.02 x 10²³ molecules = 3.6 x 10²⁴molecules

learn more:

Number of moles brainly.com/question/1841136

#learnwithBrainly

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3 years ago