Cho tớ hỏi về Chemistry

Cho tớ hỏi về Chemistry

1/ The gram weight being used for serum is 1.03gm = 1ml
a) What bottle 125ml, by weight. How many gram we measure ?
b) After subtracting the weight of container We measure a bottle of serum 3,024 gram What is the volume.

2/ We order produce 15Liters of serum. The yield of finish product, in the case is 45% of starting volume of raw material. How much raw material we need.

3/ We wish to add 0.05% sodium Azide to 2.5 liters of serụm How many grams of sodium Azide do we add ?

Các bác giúp cho em lời giải . Cám ơn trước.

1/ The gram weight being used for serum is 1.03gm = 1ml
a) What bottle 125ml, by weight. How many gram we measure ?
=1.03gm x 125ml = ... gram
b) After subtracting the weight of container We measure a bottle of serum 3,024 gram What is the volume.
= 3,024gram : 1,03gm = ... volume
2/ We order produce 15Liters of serum. The yield of finish product, in the case is 45% of starting volume of raw material. How much raw material we need.
= 15Liters x 100 : 45 = raw material
3/ We wish to add 0.05% sodium Azide to 2.5 liters of serụm How many grams of sodium Azide do we add ?
câu này không hiểu đầu bài cho lắm, giải thích thêm tý dc kô?

3/ We wish to add 0.05% sodium Azide to 2.5 liters of serụm How many grams of sodium Azide do we add ?
The weight of 2.5l of serum is: 1.03 x 1000 x 2.5= a (gr)
The weight of sodium Azide we need is: a x 0.05 : 100 = .... (gr)

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