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Katena32 [7]
3 years ago
12

Many planets are formed by a process called accretion, where chunks of material are drawn to bigger chunks of material and are s

lammed together until enough material has been gathered to produce a planet. Which of the following forces is responsible for accretion?
A.
magnetism
B.
gravitation
C.
nuclear
D.
electromagnetic energy
Chemistry
1 answer:
ozzi3 years ago
5 0

Answer:

I believe is electromagnetic energy

Explanation:

Hope you have a great day ;)

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3 years ago
What is the mass of 2 moles of carbon -12
olchik [2.2K]

Answer:

2 moles of C-12 have 24g mass

Explanation:

Given data:

Number of moles of C-12= 2 mol

Mass of C-12 = ?

Solution:

Formula:

Number of moles = mass / molar mass

Molar mass of C-12 = 12 g/mol

Now we will put the values in formula.

2 mol  = mass / 12 g/mol

Mass = 2 mol ×  12 g/mol

Mass = 24 g

Thus 2 moles of C-12 have 24 g mass.

5 0
3 years ago
Read the summary below. Choose the answer that BEST fits into the blank to complete the summary.
777dan777 [17]

Answer:

An atom has a nucleus, made up protons and neutrons, which is surrounded by a cloud of electrons.

Explanation:

An atom is the smallest indivisible part of any element that takes place in a chemical reactions.

These are the fundamental building blocks of every element and even compounds.

  • There are three known subatomic particles found within an atom.
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Both protons and neutrons are located within the tiny space called nucleus at the center of an atom.

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4 0
2 years ago
H2(g)+I2(s)→HI(s)H2(g)+I2(s)→HI(s) balance equations
poizon [28]

Answer:

H2(g)+I2(s)→2HI(s)

Explanation:

Hello there!

In this case, according to the given information and unbalanced chemical reaction, we infer it must be balanced in agreement with the law of conservation of mass because the reactants side has two hydrogen and iodine atoms whereas the products side has just one. In such a way, by placing a 2 on HI, we obtain the following balanced reaction:

H2(g)+I2(s)→2HI(s)

Regards!

5 0
3 years ago
Which ionic compound is soluble in water pbbr2, fe (oh)3,ca(no3)2, baso4?
Anton [14]

Ionic compound are those compounds which are made up of ions. The ion which has tendency to loose electrons is said to cation (positive charge) such as metals whereas ion which has tendency to gain electrons is said to anion (negative charge) such as non-metals.

Calcium nitrate is quite soluble in water due to very low lattice enthalpy in comparison to other ionic compound. With lower lattice enthalpy, less energy is required for the dissociation of calcium nitrate and it get dissolves in water than other three compounds. Moreover, hydration energy is higher for calcium nitrate which make its solubility higher in water than other ionic species.

Thus, Ca(NO_{3})_{2} is correct answer.

5 0
3 years ago
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