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riadik2000 [5.3K]
2 years ago
15

Help me please!!!!!!!!!!!!

Chemistry
1 answer:
Lisa [10]2 years ago
3 0
PLEASDR PLEASE PLEASE PLEASE PLEASE PLEASE HELP PLEASE PLEASE MAKE PLEASE PLEASE HELP ME PLEASE PLEASE HELP POG PLEASE PLEASE HELP US PLEASE HELP ME HELP ME PLEASE HELP ME THANKS FOR PLE ME PLEASE
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Active transport requires chemical energy. True False
guajiro [1.7K]

Answer:

The answer is true

Explanation:

This process is called passive transport or facilitated diffusion, and does not require energy. The solute can move "uphill," from regions of lower to higher concentration. This process is called active transport, and requires some form of chemical energy.

6 0
3 years ago
Read 2 more answers
Methane gas and chlorine gas react to form hydrogen chloride gas and carbon tetrachloride gas. What volume of carbon tetrachlori
mario62 [17]

Answer:

0.55mL of carbon tetrachloride

Explanation:

CH4(g) + 2Cl2(g) -------> CCl4(g) + 2H2(g)

From the balanced reaction equation

44800mL of chlorine produces 22400 ml of carbon tetrachloride

If 1.1mL of chlorine were consumed, volume of carbon tetrachloride= 1.1×22400/44800

=0.55mL of carbon tetrachloride

Note: 1 mole of a gas occupies 22.4L volume or 22400mL

7 0
3 years ago
What is the valency of hydroxide​
Simora [160]

Answer:

Its valancy is 1.

As it has the formula OH-.

It has valancy 1.

<em><u>hope</u></em><em><u> </u></em><em><u>it helps</u></em><em><u>.</u></em><em><u>.</u></em>

4 0
3 years ago
Which pair shares the same empirical formula? C2H4 and C6H6 CH2 and CH4 CH3 and C2H6 CH and C2H4
hoa [83]

Answer:

CH3 and C2H6

Explanation:

4 0
3 years ago
Read 2 more answers
Which isotope is used to date ancient artifacts such as fossils?
RideAnS [48]

Scientists use carbon-14 to date ancient fossils.

Plants and animals absorb carbon-14 produced by cosmic rays. The ratio of C-14 to C-12 is constant when they are alive.

When they die, the C-14 decays to C-12, and the ratio changes.

Carbon-14 has a half-life of 5730 years. Thus, the object loses half its C-14 every 5730 years.

Scientists can use the C-14 to C-12 ratio to date fossils up to 70 000 years old.

6 0
3 years ago
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