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Goryan [66]
3 years ago
10

How many atoms of carbon are combined to with 2.81 moles of hydrogen atoms in a sample of the compound ethane, C2H6?

Chemistry
1 answer:
puteri [66]3 years ago
5 0

Answer:

5.64×10²³ atoms C

Explanation:

Convert moles of H to moles of C:

2.81 mol H × (2 mol C / 6 mol H) = 0.937 mol C

Convert moles of C to atoms of C:

0.937 mol C × (6.02×10²³ atoms C / mol C) = 5.64×10²³ atoms C

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One compound in the list below is a gas at room conditions, while all of the others are liquids or solids. For each compound, in
Step2247 [10]

Answer:

First list

A. CH3OH----hydrogen bonds

CH4----dispersion forces

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Second list

H2O------ liquid----hydrogen bonds

C2H2----gas---dispersion forces

CCl4---liquid---dispersion forces

KCl----solid---ionic bonds

Explanation:

For every compound, the intermolecular forces decide whether the substance will be solid liquid or gas. Molecules are known to associate with each other in any particular state of matter. These molecules are held together by different intermolecular interactions with varying degrees of strength. The strength of the intermolecular interaction between the molecules of a substance will decide if the substance will be a solid, liquid or gas.

When the intermolecular forces are very strong such as in ionic solids and covalent network solids, the substance exists as a solid. When the intermolecular forces are not so strong such as dispersion forces and hydrogen bonds, the substance exists as a liquid. However, very weak intermolecular dispersion forces are found in gases hence the molecules are relatively free when compared to molecules of liquids and solids.

7 0
3 years ago
Which pair of properties describes the elements in Group 18?
olga55 [171]

Answer

-12

Explanation:

Cs 22 is not close to -12

6 0
3 years ago
In examples where the volume of a system is under constant pressure, which of
grin007 [14]
Answer:

D


Explanation:


At constant volume, the heat of reaction is equal to the change in the internal energy of the system. ... Most chemical reactions occur at constant pressure, so enthalpy is more often used to measure heats of reaction than internal energy.
6 0
3 years ago
PLEASE HELP!!!!!!!!!!!!!
monitta

Answer:

• The closing of the frontier

Explanation:

•• The closing of the frontier• The closing of the frontier• The closing of the frontier• The closing of the frontier• The closing of the frontier

8 0
2 years ago
The elements carbon nitrogen and oxygen are all part of the same blank on the periodic table.
Arturiano [62]
In the same period number 2
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