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Ludmilka [50]
3 years ago
14

PPLLLZZZ HHEEEELLLPPPP​

Chemistry
1 answer:
masya89 [10]3 years ago
5 0

Answer:

B) Cell Membrane

Explanation:

A) Chloroplasts are NOT in all cells, A is incorrect

C) Centrioles are for cell division, C is not correct

D) Cell walls are NOT in all cells, D is not correct

B) the cell membrane is responsible for materials traveling into and out of the cells to maintain homeostasis

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What happened to the size of the sun one carbon and oxygen
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Answer:

Explanation:

The volume of the Sun is so huge that it could hold over 1 million Earths. The Sun is a typical star, and is also the star that is nearest to the Earth. It is composed of a mixture of 73% hydrogen, 25% helium, and 2% other elements by weight.

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3 years ago
How many total atoms are in 3.3 moles of potassium sulfide, K2S?
marissa [1.9K]
The answer is 363.99 g
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H2(g) + F2(g) → 2 HF(g) ΔH=-546 kJ
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Answer: help please !!

Explanation:

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3 years ago
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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
2 years ago
If you are calculating the grams to mL ratio, you are trying to find the object’s…
Alex

Answer:

Density

Explanation:

The ratio of mass to the volume of an object is called its density. Unit of mass is grams and that of volume is mL.

Density = mass/volume

\text{Density}=\dfrac{\text{grams}}{\text{mL}}\\\\=\text{grams/mL}

If you are calculating the grams to mL ratio, it means that we are trying to find the object's density.

4 0
3 years ago
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