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ohaa [14]
3 years ago
10

Where do cells come from? (Please choose from the following)

Chemistry
2 answers:
Alex17521 [72]3 years ago
8 0
Ok! I’m pretty sure it is b
Lyrx [107]3 years ago
4 0
They come from pre-existing cells. It has to be 2. Other cells. Hope this help!
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The chemical equation of photosynthesis includes 6O2. What does the small number after the O represent?
blondinia [14]
Its the number of Oxygen molecules
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4 years ago
A researcher claims that an ancient scroll originated from greek scholars in about 500 bce. a measure of its carbon-14 decay rat
Naddik [55]
The amount of substance present in a certain object with a given half-life in terms of h can be expressed through the equation,

     A(t) = (A(o))(0.5)^(t/h)

where A(t) is the amount of substance after t years and A(o) is the original amount. In this item we are given that A(t)/A(o) is equal to 0.89. Substituting the known values,

     0.89 = (0.5)(t / 5730 years)

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<em>Answer: 963 years</em>
8 0
4 years ago
How many moles of carbon dioxide can be formed by the decomposition of 5.0 moles of aluminium carbonate
Ksenya-84 [330]

Answer:

30 moles of CO₂

Explanation:

3 0
3 years ago
A sample of methane (CH4) has a volume of 25 mL at a pressure of 0.80 atm. What is the volume of the gas at each of the followin
Xelga [282]

Answer:

a. 50ml b.10ml c. 6.097ml d. 190.1 ml

Explanation:

According to Boyle's law

Volume is inversely proportional to pressure at constant temerature

Mathematically

P1V1=P2V2

P1=Initial pressure=0.8atm

V1=Initial volume=25ml

making V2 the subject

at 0.4atm P2=0.4 atm,

V2=25×0.8/0.4

=50ml

at 2 atm V2=25×0.8/2

=10 ml

1mmHg=0.00131579

2500mmHg=3.28 atm

At 3.28 atm,V2=25×0.8/3.28

=6.097 ml

at 80.0 torr

1 torr=0.00131579

80 torr=0.1052 atm

at 0.1048 atm V2=25×0.8/0.1048

=190.1 ml

4 0
3 years ago
2
nignag [31]

Answer:

D

Explanation:

I think it is D. Think about it- if a human jumps, they are less than the gravitational force. But, if you are greater than the gravitational force, I think you will go into space.

4 0
3 years ago
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