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forsale [732]
2 years ago
8

what bodyy system Filters waste materials (esp. nitrogenous wastes) from blood; maintain water, salt, acid/base, & ion balan

ce of blood
Chemistry
1 answer:
Arada [10]2 years ago
5 0
Please don’t listen to those people who always put links those are scams. The answer is the kidney, ureters, bladder, and urethra. This system filters your blood,removing waste and excess water. Your welcome!
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Why must the spectrophotometer cell be removed from the instrument between readings?
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How does changing the temperature affect the chemical reaction?
tiny-mole [99]
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3 years ago
Caffeine has the molecular formula, C8H10N4O2. What is the percent composition of caffeine?
Debora [2.8K]

Answer:

b) 49.48% C, 5.19% H, 28.85% N, and 16.48% O

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we find the mass for each element in one mole by multiplying the number of atoms in one molecule with the atomic mass

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mH=10AH=10*1=10g

mN=4AN=4*14=56g

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by adding the masses together we find the molar mass of the molecule

M=mC+nH+mN+mO=96+10+56+32=194g/mole

we apply the rule of threes to find the percentage of each element

194g..96gC..10gH...56gN....32gO

100g....a...........b...........c.............d

a=(100*96)/194=49.48%C

b=(100*10)/194=5.19%H

c=(100*56)/194=28.85%N

d=(100*32)/194=16.48%O

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3 years ago
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3 years ago
Read 2 more answers
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