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3 years ago

In the reaction ca + f2 caf2 , what should be the coefficient for f2?

1 answer:

6 0

Answer : In the reaction of Ca + $F _{2}$ --->Ca $F _{2}$ , the coefficient of Ca and $F _{2}$ will be the same which will be 1.

Explanation : As per the rules of writing a chemical equation and balancing it properly, the number of elements in reactants side should be equal to the number of elements generated in product side. Hence when we use 1 molecule of Ca and one molecule of $F _{2}$ then it generates 1 molecule of Ca $F _{2}$ .

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Fove seconds without gravity would be detrimental to earth.<br>A.True<br>B.False

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Answer:true

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3 years ago

Which of the following is the correct formula for sulfuric acld?

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The answer is H2SO4 for sulphuric acid

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Why is it necessary to use a new salt bridge for each<br> salt bridge for each electrochemical cell?

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Answer:

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Explanation:

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3 years ago

Read 2 more answers

As the number of protons increases but the distance between the protons and electron REMAINS THE SAME...

Aloiza [94]

Answer:

The correct option is;

The electronegativity increases

Explanation:

The electronegativity is the measure of an atom's ability to attract a shared electron pair. The electronegativity of an atom is dependent on the atom's atomic number and the separation distance between the electrons in the valence shell and the positively charged nucleus such that an increase in the atomic number results in an increase in electronegativity and an increase in the distance between the valence electrons and the nucleus, leads to a decrease in electronegativity.

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3 years ago

0.500 L of a gas is collected at 2911 MM and 0°C. What will the volume be at STP?

ioda

Answer:

V₂ = 1.92 L

Explanation:

Given data:

Initial volume = 0.500 L

Initial pressure =2911 mmHg (2911/760 = 3.83 atm)

Initial temperature = 0 °C (0 +273 = 273 K)

Final temperature = 273 K

Final volume = ?

Final pressure = 1 atm

Solution:

Formula:

P₁V₁/T₁ = P₂V₂/T₂

P₁ = Initial pressure

V₁ = Initial volume

T₁ = Initial temperature

P₂ = Final pressure

V₂ = Final volume

T₂ = Final temperature

by putting values,

V₂ = P₁V₁ T₂/ T₁ P₂

V₂ = 3.83 atm × 0.500 L × 273 K / 273 K × 1 atm

V₂ = 522.795 atm .L. K / 273 K.atm

V₂ = 1.92 L

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3 years ago