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Some Basic Concepts Of Chemistry

Question
CBSEENCH11005055
Wired Faculty App

Write balanced chemical equation for the following reactions making them as informative as you can:

(i) Reaction between magnesium carbonate and dilute sulphuric acid to form an aqueous solution of magnesium sulphate, carbondioxide gas and water.

(ii) Reaction between methane gas (CH4) and oxygen gas to produce carbondioxide, water vapours and heat.

Solution

(i) MgCO subscript 3 left parenthesis straight s right parenthesis plus stack straight H subscript 2 SO subscript 4 left parenthesis aq right parenthesis with dil below space space rightwards arrow space space space MgSO subscript 4 left parenthesis aq right parenthesis
(ii) CH subscript 4 left parenthesis straight g right parenthesis space plus space 2 straight O subscript 2 left parenthesis straight g right parenthesis space rightwards arrow space space CO subscript 2 left parenthesis straight g right parenthesis space plus space 2 straight H subscript 2 straight O left parenthesis straight g right parenthesis space plus space heat

Some More Questions From Some Basic Concepts of Chemistry Chapter

Express 0.0468 in scientific notation.

What does SI units stand for?

What is the relation between temperature in Kelvin (K) and temperature on centigrade scale?

The popular unit of pressure is atmosphere, how is it related to pascal?

What are SI units of the following:

(i) Density    
(ii) Molarity          
(iii) Energy    
(iv) Temperature ?

Out of 5.00 g and 5.0 g which one is more accurate and why?

What is iodised table salt?

Under what conditions air is considered as a heterogenous mixture?

What is gun powder?

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