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Some Basic Concepts Of Chemistry

Question
CBSEENCH11004989
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Express each of the following in SI units:
100 miles per hour (the typical speed of Rajdhani Express).

Solution
100 miles per hour:
1 mile = 1.60 kilometre = 1.60 x 103 m

therefore space space space 100 space miles space equals space 1.60 space cross times space 10 cubed space cross times space 100 space straight m space space space space space space space space space space space space space space space space space space space space equals space 1.60 space cross times space 10 to the power of 5 straight m space space space space space space space space space space space space space space space space space 1 space hour space equals space 60 space cross times space 60 space seconds therefore space space space 100 space miles space per space hour space space space space space space space space space space space space space space space space space space space equals space 1.60 space cross times space 10 to the power of 5 space cross times space 60 space cross times space 60 space ms to the power of negative 1 end exponent space space space space space space space space space space space space space space space space space space space equals space 5.76 space cross times space 10 to the power of 8 space ms to the power of negative 1 end exponent space space space space space space space space space space space space space

Some More Questions From Some Basic Concepts of Chemistry Chapter

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?

Name two elements which are liquids.

Name two elements which are gases.

Name the scientist who proposed the law of multiple proportions.

Is there any exception to the law of constant composition?

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