Chemistry, asked by TuruLoob, 5 months ago

(1) How many Atoms are there in 4.2 moles of Ca ?

(2) Calculate the number of moles in 25g of Ca ( Ca = 40u)

[ ꜱᴏʟᴠᴇ ᴡɪᴛʜ ꜰᴜʟʟ ꜱᴏʟᴜᴛɪᴏɴ ]

NOTE :-

❌ɴᴏ ꜱᴘᴀᴍ
✔️ᴏɴʟʏ Qᴜᴀʟɪᴛʏ ᴀɴꜱᴡᴇʀ ɴᴇᴇᴅᴇᴅ
❌ɴᴏ ᴄᴏᴘʏ ᴀɴꜱᴡᴇʀ

TuruLoob: Answer this

Answers

Answered by Anonymous

Answer:

The mass of one mole of an element. CONVERSION FACTORS: 1 mole = 6.02 x 10. 23 atoms 1 mole = atomic mass (g).

Explanation:

TuruLoob: Wrong

TuruLoob: I want full solution

Anonymous: In order to calculate the number of moles in 25 g of calcium carbonate following formula will be used.
As the molecular weight of calcium carbonate = 40+12+3*16
molecular weight = 100 g
weight of calcium carbonate given= 25 g.
moles of calcium = weight\molecular weight
= 25\100
= 0.25 moles.
thus number of moles in 25 g of calcium carbonate is 0.25.

Anonymous: sorry actually i forgot to answer the full. here is the answer

TuruLoob: thnx

Answered by InsaneBanda

Okkkkkkkkkkkkkkkkkkk

Previous Question

Next Question