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sergiy2304 [10]
3 years ago
7

How many grams of helium are equal to 15 moles of methane (CH4)?

Chemistry
1 answer:
Dennis_Churaev [7]3 years ago
5 0

Answer:

0.062334579609362

Explanation:

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Which of these is a chemical property?
Katyanochek1 [597]
Yes, refer to the previous answer.
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4 years ago
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An atom of which element has the greatest attraction for electrons in a chemical bond?
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Answer is (4) - Se.

Among the given choices Se has the highest electronegativity value as 2.4 compared to others. Hence, Se shows <span>greatest attraction for electrons in a chemical bond.

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Which part of the energy profile of a chemical reaction that goes to completion is typically the highest in energy? A. The activ
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The answer is D transition state. In the energy profile, the transition state is the highest point. For a reaction, the activation energy is the minimal energy needed to trigger a reaction. The reactants are the start of the reaction and the products are the end of the reaction.
4 0
3 years ago
How does doubling the volume of solvent affect the concentration of the solution?
Alex17521 [72]

Answer:

Molarity is halved when the volume of solvent is doubled.

Explanation:

Using the dilution equation (volume 1)(molarity 1)=(volume 2)(molarity 2), we can demonstrate the effects of doubling volume.

Suppose the starting volume is 1 L and the starting molarity is 1 M, and doubling the volume would make the final volume 2 L.

Plugging these numbers into the equation, we can figure out the final molarity.

(1 L)(1 M)=(2 L)(X M)

X M= (1 L x 1 M)/(2 L)

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This shows that the molarity is halved when the volume of solvent is doubled.

8 0
3 years ago
Determine the mass of 2.4 x 10^24 atoms of gold?​
Scorpion4ik [409]

Answer:

Mass = 785.9 g

Explanation:

Given data:

Atoms of gold = 2.4 × 10²⁴ atoms

Mass of gold = ?

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2.4 × 10²⁴ atoms × 1 mol/ 6.02 × 10²³ atoms

number of moles = 3.99 mol

Now we will determine the mass of gold.

Mass = number of moles × molar mass

Mass =  3.99 mol × 196.97 g/mol

Mass = 785.9 g

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3 years ago
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