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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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What is symbol, molecule, electrovalent compound?​
jok3333 [9.3K]

Answer:

the abbreviation form of full name is called symbol.

the smallest unit of cimpound is called molecule.

8 0
3 years ago
Substances made of two or more elements which are not chemically bonded are known as
11111nata11111 [884]
Substances that are not chemically bonded are mixtures.
8 0
3 years ago
What is antimatter?
stepladder [879]
The answer would be <span>c.
Antimatter is made up of neutrons and electrons but no positive particles

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3 0
4 years ago
Read 2 more answers
A word of equationn for the reacyion between lithium and water
Elenna [48]

Answer:

Equation: - 2Li + H2O = Li2O + H2 Uncoated lithium metal reacts with water to form a colorless lithium hydroxide solution and hydrogen gas.

Explanation:

4 0
3 years ago
C. If 62.9 g of lead (II) chloride is produced, how many grams of lead (II) nitrate were
melomori [17]

Answer:

Mass = 76.176 g

Explanation:

Given data:

Mass of lead(II) chloride produced = 62.9 g

Mass of lead(II) nitrate used = ?

Solution:

Chemical equation:

Pb(NO₃)₂  +  2HCl     →     PbCl₂ + 2HNO₃

Number of moles of lead(II) chloride:

Number of moles = mass/molar mass

Number  of moles = 62.9 g/ 278.1 g/mol

Number of moles = 0.23 mol

Now we will compare the moles of lead(II) chloride with Pb(NO₃)₂ from balance chemical equation:

                            PbCl₂        :          Pb(NO₃)₂

                               1             :             1

                             0.23         :            0.23

Mass of Pb(NO₃)₂:

Mass = number of moles ×  molar mass

Mass = 0.23 mol × 331.2 g/mol

Mass = 76.176 g

8 0
3 years ago
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