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3 years ago

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

WITCHER [35]

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.

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3 years ago

indicate whether energy is emitted or absorbed when the following electronic transitions occur in hydrogen according to the Bohr

AlladinOne [14]

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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3 years ago

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

ivanzaharov [21]

Explanation:

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3 years ago

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?

MAXImum [283]

Answer:

Like stratovolcanoes, they can produce violent, explosive eruptions, but their lava generally does not flow far from the originating vent. Cryptodomes The 1980 eruption of Mount St. Helens was an example; lava beneath the surface of the mountain created an upward bulge which slid down the north side of the mountain.

Explanation:

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4 years ago