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TEA [102]
3 years ago
5

Which of the following processes does our Sun and other stars in our galaxy use to create energy?

Chemistry
1 answer:
Usimov [2.4K]3 years ago
5 0

Answer:

fusion reaction

The simple answer is that the sun, like all stars, is able to create energy because it is essentially a massive fusion reaction. Scientists believe that this began when a huge cloud of gas and particles (i.e. a nebula) collapsed under the force of its own gravity – which is known as Nebula Theory.

Explanation:

hope this helps

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How long would it take for Hydrogen Peroxide to break down naturally (without an enzyme)
iogann1982 [59]

Answer:

Hydrogen peroxide is a very pale blue liquid at room temperature. A French scientist called Louis Auguste Thenard discovered the compound in 1818. Hydrogen peroxide can easily break down, or decompose, into water and oxygen by breaking up into two very reactive parts – either 2OHs or an H and HO2:

Explanation:

8 0
3 years ago
A ________________ causes a __________________ heat transfer rate.
amm1812

Answer:

go back through your lesson or google a what causes a what heat transfer rate

Explanation:

6 0
3 years ago
How many particles are in 5.0 ml of Fe
nordsb [41]

f it is solid iron, use the density to get the mass. D x V = mass  

Use the mass to find the moles of Fe. Mass/atomic mass = moles  

Moles x Avogadro's number will give you the particles, assuming that you mean atoms.

7 0
3 years ago
You need to make an aqueous solution of 0.243 M iron(III) chloride for an experiment in lab, using a 125 mL volumetric flask. Ho
irakobra [83]

Answer:

5 g

Explanation:

From the question, we have,

Molarity of FeIII solution= 0.245 M

Volume of solution = 125 ml

From

number of moles= concentration × volume

We have;

Number of moles= 0.245 M × 125/1000

Number of moles = 0.031 moles

Molar mass of Fe III = 162.5g/moles

Mass of iron III = number of moles× molar mass = 0.031 × 162.5= 5 g

n

3 0
3 years ago
Period 4 of this periodic table is highlighted. What happens as you move from right to left across the period?
ivanzaharov [21]
The elements change from metals to nonmetals.
4 0
3 years ago
Read 2 more answers
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