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3 years ago

What do we know about a star if it has a lot of iron it’s core

1 answer:

8 0

When a star is fusing iron in its core, it's still giving off insane amounts of energy. The helium, hydrogen, carbon, oxygen, and silicon are still there in the star in different shells. ... Iron cannot be fused into anything heavier because of the insane amounts of energy and force required to fuse iron atoms.
Hope this helps!

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A sample containing 16.93 metal pellets is poured into a graduated cylinder containing 11.2 of water, causing the water level in

mixer [17]

Answer:

<h3>The answer is 1.99 g/mL</h3>

Explanation:

The density of a substance can be found by using the formula

$density = \frac{mass}{volume} \\$

From the question

mass = 16.93 g

volume = final volume of water - initial volume of water

volume = 19.7 - 11.2 = 8.5 mL

We have

$density = \frac{16.93}{8.5} \\ = 1.9917647058...$

We have the final answer as

Hope this helps you

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3 years ago

I need helpppppppp, please

NNADVOKAT [17]

Explanation:

cant answer without context

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2 years ago

What is the Electron Center Geometry of a CH3 carbon.

wel

Answer:

tetrahedral geometry

Explanation:

There are several centers of interest. Each carbon with all single bonds is the center of a tetrahedral geometry.

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2 years ago

A vessel contains a mixture of gases. The mass of each gas used to make the mixture is known. Which of the following information

faltersainse [42]

Answer: The molar mass of each gas

Explanation:

Mole fraction is the ratio of moles of that component to the total moles of solution. Moles of solute is the ratio of given mass to the molar mass.

$\text{Mole fraction of solute}=\frac{\text{Moles of solute}}{\text{Total Moles}}$

Suppose if there are three gases A, B and C.

a) $\text{Mole fraction of A}=\frac{\text{Moles of A}}{\text{ Moles of (A+B+C)}}$

b) $\text{Mole fraction of B}=\frac{\text{Moles of B}}{\text{ Moles of (A+B+C)}}$

c) $\text{Mole fraction of C}=\frac{\text{Moles of C}}{\text{ Moles of (A+B+C)}}$

moles of solute = $\frac{\text {given mass}}{\text {Molar mass}}$

Thus if mass of each gas is known , we must know the molar mass of each gas to know the moles of each gas.

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3 years ago

On a hot day, you sit on the edge of a pool and dip your feet into the water, causing changes to occur that are related to the p

Pani-rosa [81]

The answer is b and d

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3 years ago