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lesya [120]
3 years ago
9

Which object(s) formed last in our solar system?

Chemistry
2 answers:
galben [10]3 years ago
7 0

C. the inner planets

AnnyKZ [126]3 years ago
5 0

Long year ago In space, gravity attracts dust and gas together which created the young solar system. It pulled low-density cloud together to produce initially the solar nebula. These clouds are made of interstellar gas and dust.  

The sun formed first from these nebula and dust.

Planetesimals is just a process indicates the formation of Earth and the other planets from concentrations of dust and diffused matter in the solar system.

Inner planets are the planets located closure to the sun in comparison to outer planets. These inner planets are mercury, venus, earth and mars. Thus, 4.5 billion year ago Inner planets formed at last.


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What will happen if we put iron nails with sodium bicarbonate in a closed flask?
rjkz [21]

Answer:

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Explanation:

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5 0
2 years ago
How many molecules are present in the following quantity<br> 0.250 mole of H2O
klio [65]
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than 0.25mole ----- is ----------------  x

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4 0
3 years ago
What is the pH of a solution with an [H+] of (a) 5.4 x 10-10, (b) 4.3 x 10-5, (c) 5.4 x 10-7?
IgorLugansk [536]

Answer:

a. 9.2

b. 4.4

c. 6.3

Explanation:

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pH = -log [H⁺] = -log 5.4 × 10⁻¹⁰ = 9.2

Since pH > 7, the solution is basic.

(b) [H⁺] = 4.3 × 10⁻⁵ M

pH = -log [H⁺] = -log 4.3 × 10⁻⁵ = 4.4

Since pH < 7, the solution is acid.

(c) [H⁺] = 5.4 × 10⁻⁷ M

pH = -log [H⁺] = -log 5.4 × 10⁻⁷ = 6.3

Since pH < 7, the solution is acid.

3 0
2 years ago
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5 0
2 years ago
Lithium reacts with oxygen in a synthesis reaction. How much lithium is needed to react with 2.6 g of oxygen?
Vikentia [17]

Answer: A

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