Question

please answer it to be marked as brainaist..​

Answer 1

Explanation:

given mass /molecular mass

120/35

220/44

after solving this answer your answer will be come

Answer 2

Answer:

given mass = 120 g

molar mass of calcium = 40

no. of moles present in calcium= given mass/molar mass

= 120/40

= 3 moles

now in CO2

given mass = 220 g

molar mass = 6 + {16 × 2}

= 44

no of moles = given mass / molar mass

= 220 / 44

= 5 moles

Explanation:

any doubts??