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Alik [6]
3 years ago
14

HELP FAST PLZ!!!!

Chemistry
1 answer:
anyanavicka [17]3 years ago
3 0

Answer:

He had the most potential energy going down hill

Explanation:

because he picked up he went faster

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Upon decomposition, one sample of magnesium fluoride produced 2.15 kg of magnesium and 3.36 kg of fluorine. A second sample prod
Eva8 [605]

Answer:

The second sample will produce 1563 grams of fluorine (F2)

Explanation:

The reaction will be MgF2 → Mg + F2

The stoichiometry ratio of MgF2 and F2 is 1 : 1.

That means for 1 mole of MgF2 consumed there is 1 mole of F2 produced.

The first sample produces 2.15 kg of magnesium and 3.36 kg of fluorine

The second sample produced 1 kg of magnesium and x kg of fluorine

This we can show in the following equation =

2.15kg / 3.36 kg = 1kg / x

2.15/3.36 = 0.63988

0.63988 = 1/ x

x= 1/0.63988  = 1.563 kg

1.563kg = 1563 grams

The second sample will produce 1563 grams of fluorine (F2)

8 0
3 years ago
The reaction below is catalyzed by yeast alcohol dehydrogenase. Which of the following corresponds to X and Y in this reaction?
Free_Kalibri [48]

Answer:

B) X = NAD+ Y = NADH + H+

Explanation:

The reaction catalyzed is a redox, where the alcohol is oxidated to acetaldehyde and NAD+ is reduced to NADH+ + H+

6 0
3 years ago
Sally is making a model of a magnesium atom with an atomic mass number of 24 for her chemistry class. She has foam balls for the
Rina8888 [55]


The answer is; 6

The atomic number of magnesium (the number of protons ) is 12. Since the mass number is the number of protons + neutrons. The neutron number can be derived as 24 -12 = 12.

Since she already has 6 neutrons, she needs to add (12 – 6) more neutrons = 6


4 0
3 years ago
Read 2 more answers
Isotopes of an element contain different numbers of
Simora [160]
Neutrons
Hope this helps!
4 0
2 years ago
Which activity is the best demonstration of J.J. Thomson’s use of creativity in his work?
IrinaVladis [17]

Answer:

It may be C or D I'm not sure, but I think it is C you can go with whatever you think is best but I'm most likely sure that it is C.  Sorry if this helpful  or I got it wrong but it is. I hope this helped tho!

Explanation:

3 0
3 years ago
Read 2 more answers
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