All categories

2 years ago

What happens to the core of a high-mass star after it runs out of hydrogen?

Chemistry

1 answer:

Fantom [35]2 years ago

5 0

Answer:

i think a

sorry if it is wrong

Explanation:

You might be interested in

How many km are in 5.6mm? 5.6x103 5.6x10-6 5.6x10-3 5.6x106

il63 [147K]

Hey there :)

Question: How many km are in 5.6mm?

=>5.6x10^3

=>5.6x10^-6

=>5.6x10^-3

=> 5.6x10^6

Answer:-

$5.6 \times 10^{ - 6}$

Explanation:-

By using the formula-

$1millimeter = \frac{1}{1000000}$

As 1 with 6 zeros, we convert it into exponential form.

$= > \frac{1}{10^{6} }$

As this above value is fraction type, we can do the reciprocal, thus, the exponent gets a negative value.

$= > 10^{ - 6}$

Now combine with given question.

$= > 5.6 \times 10^{ - 6}$

7 0

2 years ago

Calculate the mass of carbon dioxide released when 185.000 g of copper carbonate [molar mass = 123.5 g/mol] is heated (assuming

Vinvika [58]

Answer:

The answer to your question is: 65.9 g released of CO2

Explanation:

MW CO2 = 44 g

MW CuCO3 = 123.5 g

CO2 released = ?

CuCO3 = 185 g

CuCO3 ⇒ CO2 + CuO

123.5 ----------- 44g

185 g ----------- x

x = (185 x 44) / 123.5

x = 65.9 g released of CO2

8 0

2 years ago

Is garlic powder a pure substance

CaHeK987 [17]

Answer: most store-bought isnt

Explanation:

there typically a lot of addivitves

8 0

3 years ago

Determines the mass of the atom

Marizza181 [45]

Answer:

No of neutrons and protons decides mass of the atom. Electrons having negligible

mass are ignored.

Mass of atom

Mass of atom= sum of no of protons(Z) and neutons(N)

=Z+N

For eg:

In hydrogen atom,

Mass of H= Z+N

=1+0

=1 AMU

5 0

2 years ago

When gina was ten, she swam in the ocean for the first time. she remembers the feeling of kicking her feet, slicing her arms thr

Anestetic [448]

First you need to know what is a semantic memory
Semantic memory, is a more structured record of facts, meanings, concepts and knowledge about the external world that we have acquired.

So ,The element which is a semantic memory is learning from her father that salt water is more dense than fresh water.

Hope this helped :)

8 0

3 years ago