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Temka [501]
3 years ago
15

What excites Kaveh Pahlevan about his work?

Chemistry
1 answer:
Elden [556K]3 years ago
3 0

Answer:

interests center around the physics and chemistry of the terrestrial planets, in particular, as it relates to their origin and early evolution.

Explanation:

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Methylpentane is held in a closed container at 150°f. both gas and liquid are present. what is the pressure in the container
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Pressure =vapor pressure of 2 methlypentane at 150F. If you
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3 years ago
What mass of iron is formed when 240 g of iron(III) oxide reacts completely with carbon monoxide?
son4ous [18]

Answer:

168 g

Reaction:

Fe_{2}O_{3} + 3 CO >>> 2 Fe + 3CO_{2}

Explanation:

First we need to figure out what is the formula mass (Mr) of Fe2O3 (Iron(III) oxide).

The atomic mass of Fe=56, O=16

Mr= 56+56+16+16+16=160 g/mol

We can now figure out the moles of the iron:

240/160 = 1.5 mol

Then we need to find the ratio to make Fe.

In the reaction, we know that 1 mole of Fe2O3 can make 2 moles of Fe. So 1.5 moles of Fe2O3 can make 3 moles of Fe.

And then we need to find the mass of the Fe.

3×56=168 g.

Hence 168g of the iron is made after the reaction.

5 0
3 years ago
indicate whether energy is emitted or absorbed when the following electronic transitions occur in hydrogen according to the Bohr
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Answer:

A=emitted B=absorbed

Explanation:

If an electron drops down from n=2 to n=1 energy is emitted, and if the electron moves up from n=1 to n=2 energy is absorbed. The amount of energy that is either absorbed or emitted is called quanta.

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5) A scientist adds 1.2 liters of water to a 5.0 liter solution, causing the molarity to become 0.4 M. What was the molarity of
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Explanation:

i hope i helped you in this problem

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During a volcanic eruption, lava flows at a rate of 26m/min. At this rate how far in kilometers can lava travel in 37 minutes?
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Answer:

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Explanation:

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4 years ago
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