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4 years ago

If a star of 50 solar masses were to supernova, it would most likely become a _____.

Chemistry

2 answers:

k0ka [10]4 years ago

8 0

Answer: e. black hole

Explanation:

A Massive star either ends up as neutron star or a black hole.

When fuel is used up, the star expands and becomes a Red super giant and goes supernova. Most of the material is thrown out which forms planetary nebula. The core collapses in seconds to form Neutron star or black hole. A star having mass more than 3 solar masses usually collapses to form black hole.

Thus, a 50 solar mass star would likely become a black hole after it goes supernova.

alexandr1967 [171]4 years ago

7 0

The answer is Black Hole.

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Chandra wants to know how many moles are contained in 150.0 g ccl4 (carbon tetrachloride). what quantity of ccl4 should she use

Fynjy0 [20]

The quantity of carbon tetrachloride, CCl₄ she will use to make her conversion is molar mass

<h3>Description of mole </h3>

The mole of a substance is related to it's mass and molar mass according to the following equation:

Mole = mass / molar mass

<h3>How to determine the mole of CCl₄</h3>

Mass of CCl₄ = 30 g
Molar mass of CCl₄ = 12 + (35.5×4) = 154 g/mol
Mole of CCl₄ =?

Mole = mass / molar mass

Mole of CCl₄ = 150 / 154

Mole of CCl₄ = 0.974 mole

Thus, we can see that the molar mass of CCl₄ is needed to obtain the number of mole.

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2 years ago

Why is it important to blow out the flame before the methanol is completely consumed?

pentagon [3]

Burying all of the methanol results in a hotter temperature so because flaming is attempting to ignite the dried salts.

That's because as the methanol is eaten to the finish, the flame approaches the dry salts and attempts to ignite them.

It is therefore critical to extinguish the flame even before methanol is entirely consumed.

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4 0

3 years ago

What is the largest area of a circle that can be made from a piece of thread 25.2cm long assume no knot

Zarrin [17]

Answer:

$50.2 cm^2$

Explanation:

Here we want to find the largest area of a circle that can be made from a piece of thread 25.2 cm long, assume no knot .

This means that the circumference of the circle must equal to the length of the thread, so we can write:

L = 25.2 cm

And the circumference can be written as:

$2\pi r = L = 25.2$

where

r is the radius of the circle

Solving for r, we find the radius:

$r=\frac{L}{2\pi}=\frac{25.2}{2\pi}=4.0 cm$

The area of a circle is given by the formula

$A=\pi r^2$

So in this case, we find:

$A=\pi (4.0)^2=50.2 cm^2$

7 0

4 years ago

Glucose molecules are made up of carbon, hydrogen, and oxygen atoms. where do these atoms come from

suter [353]

Where do the hydrogen and oxygen atoms come from that become part of the glucose molecule made during photosynthesis? The oxygen molecules come from carbon dioxide and water. The hydrogen atoms come from water.

Hope this helps.

5 0

3 years ago

A 0.100-l sample of an unknown hno3 solution required 32.9 ml of 0.200 m ba(oh)2 for complete neutralization. what was the conce

ddd [48]

The reaction between HNO3 and Ba(OH)2 is given by the equation below;
2HNO3 + Ba(OH)2 = Ba(NO3)2 + 2H2O
Moles of Barium hydroxide used;
= 0.200 × 0.039 l
= 0.0078 Moles
The mole ratio of HNO3 and Ba(OH)2 is 2: 1
Therefore; moles of nitric acid used will be;
= 0.0078 ×2 = 0.0156 moles
But; 0.0156 moles are equal to a volume of 0.10
The concentration of Nitric acid will be;
= (0.0156 × 1)/0.1
= 0.156 M

7 0

3 years ago

Read 2 more answers