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3 years ago

1. HNO3 will dissociate into: ions with a charge, and, ions with a charge

Chemistry

1 answer:

77julia77 [94]3 years ago

4 0

Answer:

HNO3 will dissociate into:

hydrogen ions with a positive (+1)

charge, and,

nitrate ions with a

negative (-1) charge.

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This substance consists of two or more different elements chemically combined

kow [346]

The substance would be referred to as a compound substance.

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3 years ago

Which phrase best describes an exothermic chemical reaction? a does not absorb any energy b forms products with higher bond ener

-Dominant- [34]

The correct answer is d. The reaction releases more energy than it absorbs. An example of an exothermic reaction is fire. Connecting the carbon atoms in wood with the oxygen in the air causes flames and gives of heat and light.

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3 years ago

Two hydrogen atoms covalently bond to form a hydrogen molecule.

ankoles [38]

Answer:

Explanation:

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3 years ago

A container with a fixed volume, filled with hydrogen gas at -104°C and 71.8 K PA is heated until the pressure reaches 225.9 K P

Daniel [21]

Answer:

The correct answer is 532 K

Explanation:

The Gay-Lussac law describes the behavior of a gas at constant volume, by changing the pressure or temperature. When is heated, the change in pressure of the gas is directly proportional to it absolute temperature (in Kelvin or K).

We have the following initial conditions:

P1= 71.8 kPa

T1= -104ºC +273 = 169 K

If the pressure increases until reaching 225.9 kPa (P2), we can calculate the final temperature of the gas (T2) by using the Gay-Lussac derived expression:

P1 x T2 = P2 x T1

⇒T2= (P2 x T1)/P1 = (225.9 kPa x 169 K)/71.8 kPa= 531.7 K ≅ 532 K

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3 years ago

What is the relationship between concentration and rate of reaction?

marshall27 [118]

Explanation:

The answer is directly proportional, because when there is more concentration their will more reactants to react fast diring the chemical reaction which increases the rate of chemical reaction. 

So, we can state that the relationship between them are directly proportional. 

Hope it helps...

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3 years ago