What are the rules used for round off numbers, Chemistry

Assignment Help:

Q. What are the rules used for round off numbers?

1. If the digit to the instantaneous right of the last significant figure is less than five don't change the last significant figure.

2. If the digit to the instantaneous right of the last significant figure is greater than five round up the last significant figure.

3. If the digit to the instantaneous right of the last significant figure is equal to five and is followed by a nonzero digit round up the last significant figure.

4. If the digit to the instantaneous right of the last significant figure is equal to five and isn't followed by a nonzero digit look at the last significant figure. If it is an odd digit round it up and if it is an even digit don't round up.

Whether you are adding or subtracting or multiplying or dividing you must always report your answer so that it has the same number of significant figures as the measurement with the fewest significant figures.


Related Discussions:- What are the rules used for round off numbers

Longest chain rule - iupac system of nomenclature, Longest chain Rule - IUP...

Longest chain Rule - IUPAC system of nomenclature The primary step in naming an organic compound is to choose the longest continuous chain of carbon atoms that may or may not

Describe the property of radioactive decay, Q. Describe the Half -Life  pro...

Q. Describe the Half -Life  property of radioactive decay? Ans. The decay of a nucleus is a random event. It is impossible to predict which nucleus will decay and when.

Why polar solvent favours sn1 mechanism , The S N 1 reaction is a substit...

The S N 1 reaction is a substitution reaction in organic chemistry. "SN" place for nucleophilic substitution and the "1" shows  the fact that the rate-determining step is unimole

Write reactions for chloroform into diethylcarbonate, Write conditions and ...

Write conditions and reactions for the following conversions: (i) Chloroform into diethylcarbonate (ii) Phenol into salicylic acid (iii) 2-propanone into 2-inethyl-2-prop

Hydroxides, Why do zinc hydroxide, aluminium hydroxide and lead (II) hydrox...

Why do zinc hydroxide, aluminium hydroxide and lead (II) hydroxide dissolve in excess aqueous sodium hydroxide?

Explain bonding molecular orbital, Explain bonding molecular orbital Th...

Explain bonding molecular orbital The bonding molecular orbital is derived by the constructive "side-to-side" overlap of peaks with peaks and troughs with troughs. The antibond

Ideal gas is kept inside a container allowed to expand , If an ideal gas is...

If an ideal gas is kept inside a container with movable piston, and is allowed to expand ISOTHERMALLY, then pressure exerted by the gas on the container wall decreses. Why? What h

Reversible cell, What things i can include under this topic(reversible cell...

What things i can include under this topic(reversible cell).

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd