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NNADVOKAT [17]
3 years ago
5

The period on the periodic table(1-7) tells you the number of ________ in an atom.

Chemistry
2 answers:
BabaBlast [244]3 years ago
8 0

Answer:

Electrons on the last energy level.

Ber [7]3 years ago
3 0

Answer:

B

Explanation:

as it depends on electronic configuration

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When a 2 kg log is burned, it produces 0.5 kg of ash. Explain why the mass of the ash is less than the mass of the log. In other
Lostsunrise [7]

Answer:

my mass turned into gasses and other substances besides ash

Explanation:

burning a log products smoke and ash. the smoke takes some mass and the ash takes the rest.

3 0
3 years ago
The use of uranium-238 to determine the age of a geological formation is a beneficial use of
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Answer:

4- radioactive isotopes

Explanation:

I don't remember exactly but this question was on the regents

3 0
2 years ago
The Spirit of America Goodyear blimp has a volume of 2.027×105 ft3.When the blimp is in operation, it is filled with helium gas.
Andru [333]
Answer: 1.027 x 10^6 g= 1027kg
In this question, you are given the volume of the blimp (2.027×10^5 ft^3) and the density of the gas(0.179g/L). To answer this question, you need to convert the volume unit into liter. The calculation would be: 2.027×10^5 ft^3 x 28.3168L/ft3= 57.398 x 10^5L= 5.74x10^6L

Then to find the mass, multiply the volume with the density. The calculation would be: 5.74x10^6L x 0.179g/L= 1.027 x 10^6 g= 1027kg
4 0
3 years ago
Read 2 more answers
How many liters of carbon dioxide will 0.5 mole of lithium hydroxide (LiOH) absorb? (One mole of any gas occupies 22.4 L under c
Svet_ta [14]

Answer:

0.5 moles of LiOH will absorb 5.6 L of CO_2

Explanation:

According to law of conservation of mass, the sum of mass on the reactant side must be equal to the sum of mass on product side.

The balanced chemical equation is:

2LiOH+CO_2\rightarrow Li_2CO_3+H_2O

2 moles of LiOH absorb 1 mole of CO_2 i.e. 22.4 Liters at STP

0.5 moles of LiOH absorb

=\frac{22.4}{2}\times {0.5}=5.6Liters

0.5 moles of LiOH will absorb 5.6 L of CO_2

4 0
3 years ago
By which process is sediment laid down?<br> its a test it's due at 10!
Alexus [3.1K]
Answer: Deposition

Explanation:
7 0
3 years ago
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