Question

Atomic masses à H(1), O(16), N(14), C(12), K(39), S(32) Ca(40), Na(23), Cl(35.5),

Mg(24), Al(27)

Molecular formulae NaCl, MgCl2

, KNO3

, H2

O2

, AlCl3

, Ca(OH)2 , MgO, H2

SO4

,

HNO3

, NaOH​

Answer 1

Answer:

NaCl=23+35.5=58.5g. MgCl2= 24+70=94g. KNO3=39+14+48=101 g. H2=2g.

O2=32g.

AlCl3=27+106.5=133.5g. Ca(OH)2= 40+32+2=74g. MgO=24+16=40g. SO4=32+64=96g. HNO3=1+14+48=63g. NaOH= 23+16+1=40 g. This is the calculation Of molecular weight If we particular element weight we can Calculate easily...... i attached there picture Of periodic Table there u can find masses of any element Plz make my answrr branliest

Answer 2

Explanation:

Molecular mass = Sum of atomic masses of constituents.

= ( Atomic mass of sodium × 1 + A + mass of chlorine × 1.

= 23×1+35.5×1

= 23+35.5

= 55.5 u