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

alex41 [277]

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 $F _{2}$ .

6 0

4 years ago

Consider the system at equilibrium. 2 H 2 ( g ) + S 2 ( g ) − ⇀ ↽ − 2 H 2 S ( g ) How will increasing the concentration of S 2 s

borishaifa [10]

Answer:

1) the balance will shift to the right

2) the balance will shift to the left

3) There will be no effect on the position of the equilibrium.

Explanation:

Step 1: Data given

The Principle of Le Chatelier says 'If the concentration of one of the reaction partners changes, the balance will shift to counteract that concentration change.

Step 2: The balanced equation

2H2(g) + S2(g) ⇆ 2H2S(g)

Step 3: How will increasing the concentration of S2 shift the equilibrium?

If the S2 concentration is increased, the system will attempt to undo that change in concentration by shifting the balance to the right, and so the H2S concentration will increase.

Step 4: How will increasing the concentration of H2S shift the equilibrium?

If the H2S concentration is increased, the system will attempt to undo that change in concentration by shifting the balance to the left, and so the H2 and S2 concentration will increase.

Step 5: How will adding a catalyst shift the equilibrium?

Reactions can be sped up by the addition of a catalyst.

In the presence of a catalyst, both the forward and reverse reaction rates will speed up equally, thereby allowing the system to reach equilibrium faster.

Adding a catalyst makes absolutely no difference to the position of equilibrium.

6 0

4 years ago

An electric wire produces a magnetic field. True or false? (GIVE PROOF)

kupik [55]

Answer:

True

Explanation:

A magnetic field is made when an electric current flows through a wire.

3 0

4 years ago

How many moles are there in 2.73 x 1023 water atoms? a 4.65 mol b 0.453 mol c 0.3.53 mol d 0.270 mol

Zinaida [17]

Answer:

b. 0.453 mol

Explanation:

To convert atoms to moles, use Avogadro's number (6.022×10²³). Divide the amount of atoms that are given by Avogadro's number. You should get 0.453 mol.

$\frac{2.73*10^{23} }{6.022*10^{23} } =0.4533$

5 0

3 years ago

In the combined gas law, if the pressure in the system is increased, what happens to the volume if temperature remains constant?

ANEK [815]

Boyle's law states that, at a constant temperature, the volume of a given mass of gas varies inversely with pressure. ... Thus Charles's law states that at a constant pressure, the volume of a given mass of gas is directly proportional to its (absolute)temperature.

7 0

3 years ago

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