Question

question no 2 answer the following subject science 1
1) Write the name of M. Cl, and deduce its molecular mass. std 9​

Answer 1

Answer:

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Answer 2

Answer:

Na  

2

​  

SO  

4

​  

 : Sodium sulphate  

Molecular Mass : 23(2)+32+16(4) = 46+32+64 = 142 g/mol

K  

2

​  

CO  

3

​  

 : Potassium carbonate

Molecular Mass : 39(2)+12+16(3) = 78+12+48 = 138 g/mol

CO  

2

​  

 : Carbon dioxide

Molecular Mass : 12+16(2) = 12+32 = 44 g/mol

MgCl  

2

​  

 : Magnesium chloride

Molecular Mass : 24.31+35.5(2) = 95.31 g/mol

NaOH : Sodium hydroxide

Molecular Mass : 23+16+1 = 40 g/mol

AlPO  

4

​  

 : Aluminium phosphate

Molecular Mass : 27+31+16(4) = 27+31+64 = 122 g/mol

NaHCO  

3

​  

 : Sodium bicarbonate

Molecular Mass : 23+1+12+16(3) = 23+1+12+48 = 84 g/mol

Explanation: