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valina [46]
3 years ago
9

What is the number 6.02x10^23 also known as?

Chemistry
1 answer:
Natalija [7]3 years ago
6 0

Answer:

Avogadro's number or Avogadro's constant.

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Select the atoms or ions drawn with valid Lewis dot structures. A) A carbon has a dot on top, right, bottom and to the left.a ni
charle [14.2K]

Answer:

B, C

Explanation:

The atoms or ions with the valid Lewis dot structures are B and C.

In A;

The Lewis structure of the carbon is correct. Each of the four dots represent the four valence electrons.

The  nitrogen with one dot on top, left and to the bottom and has a charge of minus 3 is wrong. For it to have a charge of -3 it must have 8 lewis dots ( two on the top, right, bottom and to the left)

The nitrogen with four dots (on top, right, bottom and to the left) is wrong.

In B;

An oxygen has two dots on top and bottom and one dot to the left and to the right. This is correct , the 6 dots represent the valence electrons of oxygen.

In C;

A carbon has two dots on top, right, bottom and to the left and a charge of plus four. This is correct because the charge indicates that it has gained four extra electrons so its valence electrons is now 8.

In D;

An oxygen has two dots on top, left and to the bottom and a charge of minus 2. This is wrong because the lewis dots are incomplete. Two dots are missing.

6 0
3 years ago
A bag of gumdrops contains 17 orange gumdrops, 10 yellow gumdrops, and 17 black gumdrops.
Leviafan [203]

What is the question?

5 0
4 years ago
An iron nail rusts when exposed to oxygen. According to the following reaction, how many grams of iron(III) oxide will be formed
natka813 [3]

Answer: 103.8 g of Fe_2O_3, 0.65 moles of

Explanation:

To calculate the moles :

\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}    

\text{Moles of} O_2=\frac{31.1}{32}=0.975moles

Thus O_2 is the limiting reagent as it limits the formation of product and Fe is the excess reagent.

4Fe(s)+3O_2(g)\rightarrow 2Fe_2O_3

According to stoichiometry :

3 moles of O_2 produce =  2 moles of Fe_2O_3

Thus 0.975 moles of O_2 will produce=\frac{2}{3}\times 0.975=0.65moles of Fe_2O_3

Mass of Fe_2O_3=moles\times {\text {Molar mass}}=0.65moles\times 159.69g/mol=103.8g

Thus 103.8 g of Fe_2O_3 will be produced.

7 0
3 years ago
Name the organic compound of ch3chohch2ch3
tekilochka [14]

Answer:

2-Butanol is the organic compound of ch3chohch2ch3

5 0
3 years ago
How much energy is required to vaporize 185 g of butane at its boiling point? the heat of vaporization for butane is 23.1 kj/mol
Diano4ka-milaya [45]
Answer is: 73.52 kJ<span> of energy is required to vaporize butane.
</span>m(C₄H₁₀) = 185 g.
n(C₄H₁₀) = m(C₄H₁₀) ÷ M(C₄H₁₀).
n(C₄H₁₀) = 185 g ÷ 58.12 g/mol.
n(C₄H₁₀) = 3.18 mol; amount of butane.
Hvap = 23.1 kJ/mol; <span>the heat of vaporization for butane.
</span>Q = Hvap · n(C₄H₁₀).
Q = 23.1 kJ/mol · 3.18 mol; energy.
Q = 73.52 kJ.

4 0
4 years ago
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