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Romashka [77]
3 years ago
13

What is the valency of element sulphur ​

Chemistry
2 answers:
weqwewe [10]3 years ago
8 0

sorry not sure wish I can help u

NISA [10]3 years ago
3 0
I am not to sure because I have not studied this
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What is the percentage of nitrogen in ammonium chloride (NH4Cl)?
Katena32 [7]

Answer:

25%

Explanation:

Ammonium Chloride NH4CI Fertilizer-grade NH4Cl usually contains 25% N. About two-thirds of the world capacity for manufacture of this material is located in Japan, with the remaining one-third situated in India and China.

4 0
3 years ago
At 25°C and constant pressure, carbon monoxide gas combines with oxygen gas to give carbon dioxide gas with the evolution of 10.
stealth61 [152]

Answer : The value of \Delta H for the reaction is, -565.6 kJ

Explanation :

First we have to calculate the molar mass of CO.

Molar mass CO = Atomic mass of C + Atomic mass of O  = 12 + 16 = 28 g/mole

Now we have to calculate the moles of CO.

\text{Moles of }CO=\frac{\text{Mass of }CO}{\text{Molar mass of }CO}=\frac{1g}{28g/mole}=\frac{1}{28}mole

Now we have to calculate the value of \Delta H for the reaction.

The balanced equation will be,

2CO(g)+O_2(g)\rightarrow 2CO_2(g)

From the balanced chemical reaction we conclude that,

As, \frac{1}{28}mole of CO release heat = 10.1 kJ

So, 2 mole of CO release heat = 2\times 28\times 10.1=565.6kJ

Therefore, the value of \Delta H for the reaction is, -565.6 kJ (The negative sign indicates the amount of energy is released)

4 0
3 years ago
Name each of the isotope
Alex73 [517]

Answer:

Examples of radioactive isotopes include carbon-14, tritium (hydrogen-3), chlorine-36, uranium-235, and uranium-238.

8 0
2 years ago
Read 2 more answers
HELP ME PLEASE ITS DUE 11:59 TODAY
Dmitry_Shevchenko [17]

Im sorry but its a pdf i can write on it :(

7 0
3 years ago
Which result occurs during an exothermic reaction?(1 point)
vekshin1

The result which occurs during an exothermic reaction is: C. Light and heat are released into the environment.

A chemical reaction is defined as a chemical process involving the continuous transformation and rearrangement of either the ionic, atomic or molecular structure of chemical elements, especially through the breakdown and formation of chemical bonds, so as to produce a new chemical compound.

Basically, the two (2) main types of chemical reaction are;

  • <u>Endothermic reaction:</u> this is a chemical reaction in which heat is absorbed .

<u>Exothermic reaction:</u> this is a chemical reaction in which light and heat is liberated (released) into the environment.

In an exothermic chemical reaction, light and heat energy is liberated (released) when the energy of the products is lesser than the energy of the reactants.

In conclusion, light and heat is liberated (released) into the environment during an exothermic reaction.

Read more: brainly.com/question/24222328

6 0
3 years ago
Read 2 more answers
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