3 years ago

Need help asap 20 points

Chemistry

2 answers:

Norma-Jean [14]3 years ago

4 0

The answer to the problem is A because the velocity of the plane changes when she turns it

irina1246 [14]3 years ago

4 0

Answer:

The answer to the problem is A because the velocity of the plane changes when they turns it

Explanation:

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balance by oxidation number method<br />KMnO4 + Na2O₂ + H2 so4 ko2so4 +<br />Mosou4 + Na2so<br />4 + O2 + H₂O

Katarina [22]

Answer:

8H2SO4 + 2KMnO4 + 5Na2O2 => 8H2O + 2MnSO4 + 5Na2SO4 + 5O2 + K2SO4

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Explanation:

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3 years ago

Two factors that determine kinetic energy are

Anna11 [10]

Your answer is mass and speed! Please give me brainlist :)

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3 years ago

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Ocean water contains 3.5 nacl by mass. what mass of ocean water in grams contains 45.8 g of nacl

Romashka-Z-Leto [24]

Mass percentage of sodium chloride(NaCl) in ocean waters = 3.5 %

That means 3.5 g sodium chloride(NaCl) is present for every 100 g of ocean water.

The given mass of sodium chloride(NaCl) is 45.8 g

Calculating the mass of ocean waters that would contain 45.8 g sodium chloride(NaCl):

$45.8 g NaCl *\frac{100g ocean water}{3.5g NaCl}$

= 1309 g ocean water

Therefore, 45.8 g sodium chloride is present in 1309 g ocean water.

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3 years ago

Hurry please need fast

Nina [5.8K]

I think it might be 2 but I could be mistaken sorry if I am

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3 years ago

Explain what each quantum number in a quantum number set tells you about the electron. Compare and contrast the locations and pr

klio [65]

This is a bit long right now.

(n l m s) these are the numbers.

n=2, second orbital level.
l is the type of orbit: l=1 elongated, l=0 spherical
m=0, magnetic number: 0
s=spin, both have spin positive

You need still to round it up. Srry!

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3 years ago

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