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Gnom [1K]
3 years ago
6

How many molecules are in 4HCl

Chemistry
1 answer:
Mnenie [13.5K]3 years ago
8 0
4 molecules bc the coefficient is 4
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Give the complete balanced equation for the reaction that occurs when magnesium chlorate (Mg(ClO3)2) is heated. You do not need
Karolina [17]
<span>Mg(ClO3)2 = MgCl2 + 3O2 </span>
8 0
3 years ago
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How much would the temperature of 275 g of water increase if 36.5 kj of heat were added?
Andrew [12]

<u>Answer:</u> The temperature increase will be 31.70°C.

<u>Explanation:</u>

To calculate the increase in the temperature of the system, we use the equation:

q=mc\Delta T

where,

q = Heat absorbed = 36.5 kJ = 36500J

m = Mass of water = 275 g

c = Specific heat capacity of water = 4.186J/g^oC

\Delta T = change in temperature = ? °C

Putting values in above equation, we get:

36500J=275\times 4.186J/g^oC\times \Delta T\\\\\Delta T=31.70^oC

Hence, the temperature increase will be 31.70°C.

8 0
3 years ago
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How many grams of the parent isotope are left in the sample after three half lives?
pochemuha
After 3 half-lives, 125 grams of the parent isotope will remain.
5 0
3 years ago
Write a formula for the compound that forms from potassium and chromate.
JulsSmile [24]
Hello!

The compound that forms from potassium and chromate is Potassium Chromate (K₂CrO₄)

This compound has a yellow lime color and is used in enamels, leather finishes, stainless steels and for the identification of silver ion in a silver nitrate solution. It is a powerful oxidizing agent and is produced by the treatment of potassium chromate with potassium hydroxide. It is a very toxic compound an is a known carcinogenic agent.

Have a good day!

5 0
4 years ago
Explain chemical equilibrium​
Agata [3.3K]

Answer:

chemical equilibrium, condition in the course of a reversible chemical reaction in which no net change in the amounts of reactants and products occurs. A reversible chemical reaction is one in which the products, as soon as they formed, react to produce the original reactants.

Explanation:

chemical equilibrium is the state in which both reactants and products are present in concentrations which have no further tendency to change with time, so that there is no observable change in the properties of the system.

6 0
2 years ago
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