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vladimir1956 [14]
3 years ago
14

Why is it so difficult to experience the northern lights here in michigan? I need to know noww

Chemistry
1 answer:
Anni [7]3 years ago
7 0

Answer:

Think about where you're located on the globe. That'll tell you your answer

Explanation:

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A student collected a 47.5 mL sample of gas in the lab at 0.8 atm pressure and 29.00C. What volume would this gas sample occupy
Sav [38]

Answer:

the volume would be 69.034mL

Explanation:

8 0
2 years ago
Please check this for me?
kolbaska11 [484]
The answer is 
<span>2PbS(s) + 3O2(g) = 2PbO(s) + 2SO2(g)

Your answer is not yet balanced because you have 3 oxygen atoms. it should be balanced by multiplying both side by 2 such as the balanced equation I made. To check it, I will explain why your answer is not yet balanced.

check: (from your equation)
</span> 1-Pb-1
 1-S-1
2 -O-3
the difference between the reactant and the product of Oxygen will prove that it is not yet balanced.

If you use 2PbS(s) + 3O2(g) = 2PbO(s) + 2SO2(g), to check it:
2-Pb-2
 2-S-2
6 -O-6
then this is now balance
6 0
3 years ago
Clare is a 14-year-old female who lives with her 29-year-old mother and three younger siblings in a two-bedroom apartment in a h
iVinArrow [24]

Answer:

What percent of physically assaulted or abused adolescents reported lifetime substance abuse or dependence? Select one:

d. 25 percent

Explanation:

The study performed at the National Institute of Justice in 2003, called  "Youth Victimization: Prevalence and Implications", Washington, D.C., U.S. Department of Justice, showed a rate of lifetime substance abuse or dependence at approximately 25 percent for adolescents who had been physically assaulted or abused. This compares to a rate of approximately six percent for adolescents who had not been physically assaulted or abused.

3 0
2 years ago
Hydrogen sulfide is composed of two elements: hydrogen and sulfur. in an experiment, 6.500 g of hydrogen sulfide is fully decomp
LiRa [457]
Hydrogen sulfide = hidrogen + sulfur

       6.500 g                      

a)                             0.384 g   +    x

=> 6.500 = 0.384 + x => x = 6.500 - 0.384 = 6.116 g

Answer: 6.116 g of sulfur must be obtained

b) this experiment demonstrate the conservation of mass.

c) Dalton's atomic model states that the atoms cannot be created, split or be destroyed, and so in a chemical reaction the atoms rearrange but the number of each type of atoms remain constant, so the mass of each type of atoms and the total mass remain constant.
8 0
3 years ago
What would happen when a substance changes from one phase to another? A. The substance loses or gains heat. B. The average kinet
lutik1710 [3]
I think the correct answer from the choices listed above is option B. When a substance changes from one phase to another, the average kinetic energy of the substance <span>changes since the molecules movements are changed as well. Hope this answers the question. Have a nice day.</span>
3 0
2 years ago
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