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3 years ago

14

. Based on their position in the periodic table, predict which (of the two elements given) will be more reactive Circle your cho

ice.
a. V and Rb b. Ne and O c. FandO

1 answer:

Vladimir79 [104]3 years ago

8 0

Explanation:

your anawer to the question is A. V and Rb

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What is the pressure inside a 2.0 L bottle filled with 0.25 mol of carbon dioxide gas at 25 °C?

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Answer:

3.1atm

Explanation:

Given parameters:

Volume of gas = 2L

Number of moles = 0.25mol

Temperature = 25°C = 25 + 273 = 298K

Unknown:

Pressure of the gas = ?

Solution:

To solve this problem, we use the ideal gas equation.

This is given as;

PV = nRT

P is the pressure

V is the volume

n is the number of moles

R is the gas constant = 0.082atmdm³mol⁻¹K⁻¹

T is the temperature

P = $\frac{nRT}{V}$

Now insert the parameters and solve;

P = $\frac{0.25 x 0.082 x 298}{2}$ = 3.1atm

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Answer:

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Explanation:

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How many moles of atoms are in 7.00 g of 13c? express your answer numerically in moles?

Nadusha1986 [10]

Molar mass of 13c = 13 grams
number of moles = mass / molar mass
therefore,
number of moles = 7 / 13
To know the number of atoms in 7/13 moles, we simply multiply the number of moles by Avogadro's number as follows:
number of atoms = (7/13) x 6.022 x 10^23 = 3.2426 x 10^23 atoms

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Answer:

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Explanation:

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Explanation:

1. volume

2. pressure

3. moles

4. temperature

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6. moles

7. pressure

8. volume

9. pressure

10. volume

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