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Mazyrski [523]
3 years ago
13

HELP HELP ME PLEASE!!!!!!!

Chemistry
1 answer:
Zielflug [23.3K]3 years ago
5 0
11. <span>Ionic compounds that dissolve in water conduct electricity because they break into ions that move freely.

12. </span><span>Solid metals are good conductors of heat and electricity.

13. </span>Molecular compounds that dissolve in water do not conduct electricity because no charged particles are present.

14. <span>Because the electrons in a molecule of hydrogen fluoride (HF) are more strongly pulled toward the fluorine atom, the molecule is polar.
</span>
15. A metal crystal consists of positively charged metal ions embedded in a "sea" of freely moving valence electrons.

16. <span>The properties of solid metals can be explained by the structure of and the bonding among the metal atoms. = True

17. </span><span>Orderly crystal shapes, high melting points, and electrical conductivity, when dissolved in water, are properties of ionic compounds. = True

18. </span><span>When electrons are transferred between two atoms, a covalent bond is formed. = False  (</span><span>When electrons are shared between two atoms, a covalent bond is formed.)

19. </span><span>A low melting point is one property of molecular compounds. = True

20. </span><span>A nonpolar bond is formed when two atoms share electrons unequally. = False  (</span><span>a polar bond is formed)</span>
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8
Roman55 [17]

Answer:

305 litres of NO gas will be produced from 916 L of NO₂

Explanation:

Given the balanced equation of the chemical reaction as follows:

3 NO₂ (g) + H₂O( l) —— 2 HNO₃ (l) + NO (g)

Under standard conditions, 3 moles of No₂ will react with 1 mole of water to produce 1 mole of NO gas.

Molar volume of a gas at STP is 22.4 L

Number of moles of NO₂ gas present in 916 L = 916/22.4 = 40.893 moles of NO₂ gas

From the mole ratio of NO₂ to NO in the equation of reaction,

Number of moles of NO that will be produced = 1/3 × 40.893 moles = 13.631 moles of NO gas

Volume of 13.631 moles of NO gas = 13.631 × 22.4

Volume of NO gas produced = 305.334L

Therefore, Volume of NO gas produced from the reaction of 916 L of NO₂ with water = 305 L

5 0
3 years ago
true or false: Mendeleev's arrangement of elements in the periodic table was based on the observations and experiments of his pr
Oduvanchick [21]

This answer is true

7 0
4 years ago
Read 2 more answers
If the [H+] = 0.01 M, what is the pH of the solution, and is the solution a strong acid, weak acid, strong base, or weak base?
lana66690 [7]

Answer:

2, strong acid

Explanation:

Data obtained from the question. This includes:

[H+] = 0.01 M

pH =?

pH of a solution can be obtained by using the following formula:

pH = –Log [H+]

pH = –Log 0.01

pH = 2

The pH of a solution ranging between 0 and 6 is declared to be an acid solution. The smaller the pH value, the stronger the acid.

Since the pH of the above solution is 2, it means the solution is a strong acid.

5 0
3 years ago
Draw the simplified curved arrow mechanism for the reaction of butan-2-one and CH3Li to give the major product.
Yuki888 [10]

Answer:

Follows are the solution to this question:

Explanation:

Please find the image file of the chemical reaction in the attachment:

In a water medium, the CH3- type CH 3Li is a heavy nucleophile that attacks the carbonyl carbon atom to form the alkoxide ion, which will then be protonated to form alcohol.

8 0
3 years ago
Which ph is more acidic, a ph of 3, a ph of 7, or a ph of 9?.
Andrei [34K]

Answer:

pH of 3.

Explanation:

pH 1 to 6 is acidic.

7 is neutral.

8 to 14 is alkaline

8 0
3 years ago
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