13 - Periodic table
14 - Dimitri mandeleev
15 - groups
Mark me brainiest pls it right answer
B. A students clothes catch on fire
Answer:
C
Explanation:
If you think about it treated sewage would have a certain place that it is put therefore C is the answer
It's any of the almost spherical concentric regions of matter that make up the earth and it's atmosphere, as the lithosphere and hydrosphere.
Hope this helps... If you could, could you mark my answer as brainliest? I'm trying to level lol
Answer is: 23,33 ib.
mr - mass of solution. mr = mrs + m(water)
mrs - mass of solute.
ω - mass percent of solution, mass percent = the grams of solute divided by the grams of solution. ω = mrs÷mr<span>
</span>mr₁ = 70 ib.
ω₁ = 5% = 0,05.
mrs₁ = 0,05 · 70 ib = 3,5 ib.
mrs₁ = mrs₂, ω₂ = 7,5% = 0,075
mr₂ = mrs₂ ÷ ω₂ = 3,5 ib ÷ 0,075 = 46,66 ib.
m(water) = mr₁ - mr₂ = 70 - 46,66 =23,33 ib.
