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Subject: Science, asked on 10/1/17

what is the number of valence electron in chloride ion

Subject: Science, asked on 14/12/16

is respiration chemical change ?

Subject: Science, asked on 14/11/16

Is there a need to remember the radii of any element

Subject: Science, asked on 2/11/16

PLEASE TELL, WHETHER IT IS PROPER TO BALNCE CHEMICAL EQUATIONS USING HALVES

Subject: Science, asked on 31/10/16

IN THE FOLLOWING CASE FIND THE MOLARITY OF THE RESULTANT SOLUTION :
20 ml ,1 MHCL solution is diluted with 30 ml water.IS IT CAN BE SOLVED BY M1V1=M2V2 FORMULA

Subject: Science, asked on 4/2/17

What gas was used in a nazi gas chamber? how did it work?
 

Subject: Science, asked on 3/2/17

For what purpose is caustic soda used for?

Subject: Science, asked on 6/1/17

Find the mass of:
(a) .2 moles of oxygen gas
 (b) 1.5 moles of water
 (c) 3 moles of neon
(a) .5 moles of sodium 
(e) 2 moles of nitrogen element

Subject: Science, asked on 30/12/16

Give me some tricks to solve water image questions asked in Olympiads.

Subject: Science, asked on 29/12/16

an element x has mass number 24 and neutrons 12. Calculate the valency of element. ​  

Subject: Science, asked on 8/12/16

calculate the number of moles in 3.011X1023 atoms of C.

Subject: Science, asked on 8/12/16

calculate the number of atoms in 8 gram of o2

Subject: Science, asked on 14/10/16

what helps in determining the formula of a ionic compound

Subject: Science, asked on 3/8/16

​What is oxidation?Give some examples.

Subject: Science, asked on 9/6/16

what is chemical reations
 

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