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2 years ago

Which of the following best describes a neutralization reaction?

Chemistry

1 answer:

konstantin123 [22]2 years ago

6 0

Answer:

The H+ from acid and OH- from base forms water, the other parts form the salt.

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50PTS When an electric current is passed through water during the process of electrolysis, two gases are formed. One gas has a b

3241004551 [841]

This is a physical change, you can turn the current off not changing something permanently such as mixing cake batter you cant delude the eggs and flour so its would be physical.

6 0

3 years ago

What is the mass number of a carbon atom which has 7 neutrons?

Strike441 [17]

Answer:

Carbon-13

Explanation:

Carbon have three isotopes. Isotopes are the atoms of the same element which has a different number of neutrons. Carbon has 3 isotopes.

Carbon-12 : 6 electrons I 6 protons I 6 neutrons

Carbon-13 : 6 electrons I 6 protons I 7 neutrons

Carbon-14 : 6 electrons I 6 protons I 8 neutrons

5 0

3 years ago

A sample of unknown hydrate, AC-XH20, has a mass of 1.000 g before heating and a

KIM [24]

Answer:

The water of crystallization for the formula of the unknown hydrate is 2.

Explanation:

Mass of an unknown hydrate = 1.000 g

Molar mass of hydrate = 195.5 g/mol

MOles of unknown hydrate = $\frac{1.000 g}{195.5 g/mol}=0.00512 mol$

Mass of hydrate after heating = 0.781 g

Mass of water lost due to heating = x

$1.000 g = 0.781 g + x\\x = 1.000 g - 0.781 g = 0.219 g$

Moles of water lost = $\frac{0.219 g}{18.01528 g/mol}=0.0122 mol$

$AC.xH_2O+Heat\rightarrow AC+xH_2O$

1 Mole of hydrate has x moles of water and 0.00512 moles of hydrate has 0.0122 moles of water then we can write:

$\frac{1 }{x}=\frac{0.00512 }{0.0122 }\\x\approx 2$

The water of crystallization for the formula of the unknown hydrate is 2.

7 0

3 years ago

How does the temperature of absolute zero relate to the kinetic energy of a substance?

NeX [460]

At absolute zero the kinetic energy of the substance will be 0

7 0

4 years ago

what is the wavelength of a photon emitted when an electron jumps from n=2 to n= 1 energy level of a single ionized helium atom

Neko [114]

Answer:

I hope it help you the wavelength is 1.9130E-28

7 0

3 years ago