chalk contains 10% calcium, 3% carbon 12 % oxygen and the remaining sand find the amount of carbon and calcium ( in gram) in 2 1/2 kg of chalk .also find the amount of sand ( in kg )
Answers
Answer:
here is your answer....
Step-by-step explanation:
In chalk,
Calcium=10%
Carbon=3%
Oxygen=12%
Remaining=100−(10+3+12)=100−25=75%
Sand=75%
Weight of chalk =2 1/2=5/2 kg
Amount of carbon =5/2×3/100=3/40kg =3/40×1000=75grams
Amount of calcium=5/2×10/100=1/4kg=250grams
and amount of sand=5/2×75/100=15/8kg=1.875kg
Answer:
Carbon=75g
Calcium=250g
Sand=1.875kg
Step-by-step explanation:
Calcium=10%
Carbon=3%
Oxygen=12%
Sand=100-(10+3+12)
=100-(13+12)
=100-25
=75%
Given:
Total Chalk=2*1/2 Kg
=2.5kg
Total Chalk (in grams)=2.5*1000
=2500g
Carbon (in grams)=2500*3/100
=75g
Calcium (in grams)=2500*10/100
=250g
Sand (in kg)=2.5*75/100
=1.875kg