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3 years ago

What numbers should be added to the blanks to balance this chemical equation? _F2 + H20 --------> _OF2 + _HF

Chemistry

1 answer:

lidiya [134]3 years ago

8 0

<h2>The numbers to be added to the blanks to balance this chemical equation are 2, 1 , 1 and 2</h2>

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

$2F_2+H_2O\rightarrow OF_2+2HF$

Thus in the reactants, there are 2 atoms of hydrogen , 1 atom of oxygen and 4 atoms of flourine.Thus there will be atoms of hydrogen , 1 atom of oxygen and 4 atoms of flourine in the product as well.

Learn more about conservation of mass

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Thermal expansion is the increase in volume that results from an increase in temperature

sattari [20]

Answer:

True

Explanation:

Thermal expansion is the increase of volume due to increase in tempature so this statement would in fact be correct. Have a fantastic day!

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3 years ago

Can somebody help me with this.

Inessa05 [86]

Answer:

H₂O

H₃O⁺

I⁻

Explanation:

Bronsted-Lowry acids are chemicals that can donate protons, and Bronsted-Lowry bases are chemicals that can accept them. Conjugate bases and acids are the resulting effect of losing or gaining a proton in the form of H⁺.

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2 years ago

A certain radioisotope has a half-life of 7.32 days. what percentage of an initial sample of this isotope remains after 36 days?

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3 years ago

Which reaction results in the greatest increase in entropy?

Vlad [161]

Entropy of a reaction can be calculated as:

S_{reaction}=nS_{product}-mS_{reactant}

Where, n is coefficient of products

m is coefficient of reactants

Here by comparing all the reactions it was found that that the entropy increases in only reaction 1 . as in it ,

S_{reaction}=nS_{product}-mS_{reactant}

S_{reaction}=2S_{product}-1S_{reactant}

Found to be greater than other equations.

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3 years ago

Read 2 more answers

If an ice cube melts at 0ºC but water also freezes at 0ºC, what is the difference between melting and freezing in terms of…….

devlian [24]

Answer:

8. When melting the energy of the ice cubes increases and when frezzing the energy of the water decreases.

9. When melting the otion of the particles speed up, when freezing the motion of the particles slow down.

Explanation:

8. The energy involved in the phase changes

When an ice cube melts at 0ºC it must absorb or gain energy from the surroundings. This is an endothermic process, because the energy of the liquid water shall be higher than the energy of the starting ice cubes.

In conclusion, when melting the energy of the water increases.

On the other hand, when the liquid water freezes, also at 0ºC, the flow of heat energy is from the liquid water to the surroundings. This is an exothermic process because the water releases heat. At the end, the energy of the frozen water will be lower than the energy of the liquid water.

In conclusion, when freezing the enery of the water decreases.

9. The motion of the particles of the substances during the phase changes

The particles of liquid substances are in constant motion, which is what allows them to flow. This is because the particles (molecules or atoms) are relatively distant from each other, with relatively low intermolecular forces. Thus, they can slide on each other.

On the other hand, the solid substances have the particles in fixed position in structures called crystals. The particles vibrate but do not translation motion.

In conclusion, the difference is that the motion of the particles during melting increases and the motion of th particles during freezing decreases.

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3 years ago

What numbers should be added to the blanks to balance this chemical equation? ___F2 + __ H20 --------> ___OF2 + ___HF

What numbers should be added to the blanks to balance this chemical equation? _F2 + H20 --------> _OF2 + _HF