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natima [27]
2 years ago
9

Determine the empirical formula of an oxide of iron, which has 69.9% iron and 30.1% dioxygen by mass.​

Chemistry
1 answer:
Zina [86]2 years ago
4 0

Answer:

again same questions

i think its from 1st chapter

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Which shows the formula for an organic acid?
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Answer:

A

Explanation:

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6 0
3 years ago
an isotope of cesium (cesium-137) has a half-life of 30 years if 1.0g of cesium-137 disintegrates over a period of 90 years how
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The answer is after 3 half lives
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Why weren’t scientists initially concerned that the ocean absorbs excess carbon dioxide?
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2 years ago
Describe the structure of atoms including the masses, electrical, charges, and locations of protons, neutrons in the nucleus ,an
steposvetlana [31]

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The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge).

Explanation:

The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge).

3 0
2 years ago
A car with a mass of 1,500 kg is traveling at a speed of 30 m/s. What force must be applied to stop the car in 3 seconds ?
saw5 [17]

Yo sup??

we can solve this problem by applying Newton's 2nd law

F*t=Δp

p=momentum

pi=mu=1500*30

pf=mv=m*0=0

Therefore

F*3=1500*30

F=15000 N

Hope this helps.

5 0
2 years ago
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