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Mashcka [7]
3 years ago
15

Which contains 3 significant figures.

Chemistry
1 answer:
jolli1 [7]3 years ago
4 0
B, E, F have 3 significant figures
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As you go down group one of the periodic table, the reactions become and more
Lady bird [3.3K]

Answer:

vigorous

Explanation:

As you go down group one of the periodic table, the reactions become and more vigorous.

3 0
2 years ago
How many moles of nitrogen gas are there in 16.8 L of this gas at STP?
sweet-ann [11.9K]
According to Avogadro's Law, same volume of any gas at standard temperature and pressure will occupy same volume. And one mole of any Ideal gas occupies 22.4 dm³ (1 dm³ = 1 L).

Data Given:

                  n = moles = ?
                  V = Volume = 16.8 L

Solution:
               
As 22.4 L volume is occupied by one mole of gas then the 16.8 L of this gas will contain....

                           = ( 1 mole × 16.8 L) ÷ 22.4 L
                    
                           = 0.75 moles

Result:
           
16.8 L of Nitrogen gas will contain 0.75 moles at standard temperature and pressure.
4 0
3 years ago
I will give brainliest to whoever is first ❗️❕❗️❕❗️❕❗️
salantis [7]
3rd Answer. Rays reflect in random directions
5 0
2 years ago
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Misha Larkins [42]
<span>density is defined as mass per volume.. so 94 mL makes no sense.</span>
7 0
3 years ago
What does a catalyst do when added to a chemical reaction? Select all that apply.
Stels [109]

Answer:

It increases the activation energy.

It speeds up chemical reactions.

Explanation:

7 0
2 years ago
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