A mass of protons and neutrons. Hope this helps. Abby (I'm really awesome)
Answer:
abiotic and biotic check
Explanation:
Abiotic is something that is not living
Ex:air
Biotic is something that is living
EX :Plants
Answer:
74.566
Explanation:
C6H6 + 02 =6CO2 + 3H2O
2C6H6 + 15O2=12CO2 + 6H2O
mm of C6H6=(12x6)+(6x1)= 72+6 =78gram/mol
mass conc = 2x78=156
mm CO2= 12+(16x2)=
12+32= 44gram/mol
mass conc of CO2 = 12x44
= 528
from The equation
156g of C6H6=528g of CO2
22.031g of C6H6=Xg of CO2
therefore, Xg=
22.031 x 528/ 156
= 74.566g
Answer:
- <u><em>3.30 × 10³ years</em></u>
Explanation:
1) <u>Carbon-14 disintegration rate of a young (alive) tree</u>: 0.266 per second per gram.
2)<u> Carbon-14 disintegration rate of a wood sample prepeared from an object recovered at an archaelogical excavation (dead matter):</u> 0.178 per second per gram.
3) <u>Ratio of decay</u>: A/A₀ = 0.178 / 0.266 = 0.669
4) <u>Half-life equation</u>: A/A₀ = (1/2)ⁿ, where n is the number of half-lives since the object died.
5) <u>Substitute and solve for n</u>:

That means that 0.578 half-life has elapsed since the wood with which the object was created was dead matter.
6) <u>Convert number of half-lives to years</u>:
- 0.578 half-life × 5715 years/half-life = 3,303 years = 3.30 × 10³ years.
The picture above shows the water cycle. In the water cycle, water travels from the land to the sky and back again. Water leaves the ocean through <u>Evaporation</u><u> </u>and returns to the ocean through <u>Precipitation</u><u> </u><u>and</u><u> </u><u>run-off</u><u>.</u><u> </u>
<u>Thank</u><u> </u><u>You</u><u> </u><u>☺️</u><u> </u><u>☺️</u><u>.</u><u> </u>
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