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Alex17521 [72]
4 years ago
10

According to Le Chatelier’s principle, a change in pressure affects the chemical equilibrium of the reaction system under what c

ondition? The reactants and the products are in the solid phase. The reactants and the products are in the liquid phase. Some of the reactants or the products are in the gaseous phase. Some of the reactants or the products are solid, and some are liquid.
Chemistry
2 answers:
charle [14.2K]4 years ago
7 0
Some of the reactants or the products are in the gaseous phase.
Eduardwww [97]4 years ago
5 0

C. Some of the reactants or the products are in the gaseous phase.

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isotopes of an element will always have the same a. number of protons. b. number of neutrons. c. number of electrons. d. mass.
Nastasia [14]
Your answer is same number of protons
3 0
3 years ago
3) (Solid magnesium carbonate mixed in a solution of dilute hydrochloric acid. Assume the
Virty [35]

<u>Answer:</u> The mass of magnesium carbonate that will be dissolved in the reaction is 6.99 g.

<u>Explanation:</u>

We are given:

Amount of heat released = 1950 J = 1.950 kJ                 (Conversion factor: 1 kJ = 1000 J)

The chemical equation for the reaction of magnesium carbonate and hydrochloric acid follows:

MgCO_3+2HCl\rightarrow MgCl_2+H_2O+CO_2;\Delta H_{rxn}=-23.4kJ

By Stoichiometry of the reaction:

If 23.4 kJ of heat is released, then 1 mole of magnesium carbonate is dissolved

So, when 1.950 kJ of heat is released, then = \frac{1mol}{23.4kJ}\times 1.950kJ=0.083mol of magnesium carbonate is dissolved

To calculate the mass of the substance by given number of moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}

Moles of magnesium carbonate = 0.083 moles

Molar mass of magnesium carbonate = 84.3 g/mol

Putting values in above equation, we get:

0.083mol=\frac{\text{Mass of magnesium carbonate}}{84.3g/mol}\\\\\text{Mass of magnesium carbonate}=0.083mol\times 84.3g/mol=6.99g

Hence, the mass of magnesium carbonate that will be dissolved in the reaction is 6.99 g.

4 0
3 years ago
Which example shows an interaction between the urinary system and the circulatory system?
belka [17]
C. A bee stinging the skin flowing to the kidneys (:
4 0
3 years ago
Read 2 more answers
How many liters of carbon dioxide will be produced when 89.5 L of ethane are burned? (One mole of any gas occupies 22.4 L under
yan [13]

Answer:

179 L of CO2

Explanation:

Given the equation of the reaction;

C2H6(g) + 7/2 O2(g) -------> 2CO2(g) + 3H2O(g)

Now 1 mole of ethane yields 2 moles of CO2 from the balanced reaction equation

1 mole of a gas occupies 22.4 L volume so,

22.4 L of ethane yields 44.8 L of CO2

89.5 L of ethane yields 89.5 * 44.8/22.4 = 179 L of CO2

4 0
3 years ago
Help needed ASAP, I will mark your answer as brainliest.
Liono4ka [1.6K]
I think the answer is C I think that bc I added 3 and the 2 which made it H5 and than multipled the 3 and the 2 which made it C6 than Cl
7 0
3 years ago
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