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jek_recluse [69]
3 years ago
9

When the following reaction comes to equilibrium, will the concentrations of the reactants or products be greater? Does the answ

er to this question depend on the initial concentrations of the reactants and products? A(g)+B(g)⇌2C(g)Kc=1.4×10−5 Match the words in the left column to the appropriate blanks in the sentences on the right. ResetHelp The value of the equilibrium constant is relatively ; therefore, the concentration of reactants will be the concentration of products. This result is the initial concentration of the reactants and products.
Chemistry
1 answer:
Nutka1998 [239]3 years ago
4 0

Answer:

At equilibrium, the concentration of the reactants will be greater than the concentration of the products. This does not depend on the initial concentrations of the reactants and products.

Explanation:

The value of Kc gives us an idea of the extent of the reaction. A big Kc (Kc > 1) means that in the equilibrium there are more products than reactants, and the opposite happens for a small Kc (Kc < 1). The equilibrium is reached no matter what the initial concentrations are.

The value of the equilibrium constant is relatively SMALL; therefore, the concentration of reactants will be GREATER THAN the concentration of products. This result is INDEPENDENT OF the initial concentration of the reactants and products.

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3 years ago
"how many molecules of carbon dioxide exit your lungs when you exhale 5.00 × 10−2 mol of carbon dioxide, co2?"
IrinaVladis [17]
We are going to use Avogadro's constant to calculate how many molecules of

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when 1 mole of CO2 has 6.02 x 10^23 molecules, so how many molecules in

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number of molecules = moles of CO2 * Avogadro's number

                                     = 5 x 10^-2  * 6.02 x 10^23

                                     = 3 x 10^22 molecules 

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5 0
3 years ago
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lana66690 [7]

1. C

2. C

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I hope this helped :D

7 0
3 years ago
Which unit can be used to express the concentration of a solution?
exis [7]

Answer: (3) ppm

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Parts per million (ppm) is used to express the concentration when a very small quantity of solute is present in a large quantity of the solution. It is defined as the mass of solute present in one milion (10^6) parts by mass of the solution.

ppm=\frac{\text {mass of Solute}}{\text {Mass of solution}}\times 10^6

L/s is used to express flow rate.

J/g is used to express energy per unit mass.

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6 0
3 years ago
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An atom X has three electrons in its outermost shell. Which ion will most likely be formed by X?
DedPeter [7]

Answer: X3+

Explanation:

Every atom aim to achieve stability by receiving electrons or giving their valence electrons in order to have a complete outermost shell of 2 (duplet) or 8 (octet structure).

In this case, the atom X will easily give off its three valence electrons to another atom(s), thereby forming a trivalent positive ion (X3+) with a stable duplet or octet structure (i.e an outermost shell with 2 or 8 electrons).

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Thus, due to the give away of three electrons (3e-), the atom X becomes X3+.

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