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klasskru [66]
3 years ago
11

Which statement is true about the speed of light? (2 points) Light travels relatively slowly. Distance in space is measured usin

g the speed of light. Time in space is measured using the speed of light. The speed of light is unknown.
Chemistry
2 answers:
melamori03 [73]3 years ago
6 0

Distance in space is measured using the speed of light.

MaRussiya [10]3 years ago
5 0

Answer:

Distance in space is measured using the speed of light.

Explanation:

I took the test

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A student heats a liquid on a burner. What happens to the portion of liquid that first begins to warm?
Natalija [7]
I believe it becomes less dense, bc when you heat something it’s molecules spread further apart.
8 0
3 years ago
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A chemist needs to make 250 mL of a 2.50 M aqueous solution of ammonium hydroxide from a 6.00 M ammonium hydroxide solution. How
Furkat [3]

Answer:

250 mL (total solution)  = 104 mL (stock solution)  + 146 mL (water)

Explanation:

Data Given

M1 = 6.00 M

M2 = 2.5 M

V1 = 250 mL

V2 = ?

Solution:

As the chemist needs to prepare 250 mL of solution from 6.00 M ammonium hydroxide solution to prepare a 2.50 M aqueous solution of ammonium hydroxide.

Now

first he have to determine the amount of ammonium hydroxide solution that will be taken from6.00 M ammonium hydroxide solution

For this Purpose we use the following formula

                    M1V1=M2V2

Put values from given data in the formula

                   6 x V1 = 2.5 x 250

Rearrange the equation

                   V1 = 2.5 x 250 /6

                    V1 = 104 mL

So 104 mL is the volume of the solution which we have to take from the 6.00 M ammonium hydroxide solution to prepare 2.5 M  aqueous solution of ammonium hydroxide

But we have to prepare 250 mL of the solution.

so the chemist will take 104 mL from 6.00 M ammonium hydroxide solution and have to add 146 mL water to make 250 mL of new solution.

in this question you have to tell about the amount of water that is 146 mL

250 mL (total solution)  = 104 mL (stock solution)  + 146 mL (water)

7 0
3 years ago
HOW MANY M ARE IN 3.0X105 MM?
erik [133]

The answer to the question is 300meters.

7 0
3 years ago
In the sodium-potassium pump, sodium ion release causes two K ions to be released into the cell. __________________ True False
Solnce55 [7]

Answer:

false

Explanation:

As we know that in sodium-potassium pump .          

sodium potassium move 3Na+ outside the cells          

and  moving 2k+ inside the cells                        

so that we can say that given statement is false    

Answer FALSE                                                      

6 0
3 years ago
Which sequence represents the relationship between pressure and volume of an ideal gas as explained by the kinetic-molecular the
Dmitriy789 [7]
That they are random, constant, and straight -line motion.
8 0
3 years ago
Read 2 more answers
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