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GaryK [48]
2 years ago
8

What is kinetic energy

Chemistry
1 answer:
lina2011 [118]2 years ago
7 0

It's the form of energy in a moving object or a particle. It is present in any object that has a mass and a speed.

Kinetic energy = 1/2 mv²

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Given that sodium chloride is 39.0% sodium by mass, how many grams of sodium chloride are needed to have 100.mg of Na present? G
seraphim [82]

<u>Answer:</u> The mass of sodium chloride solution present is 0.256 grams.

<u>Explanation:</u>

We are given:

39.0 % of sodium in sodium chloride solution

This means that 39.0 grams of sodium is present in 100 grams of sodium chloride solution

Mass of sodium given = 100 mg = 0.1 g     (Conversion factor:  1 g = 1000 mg)

Applying unitary method:

If 39 grams of sodium metal is present in 100 grams of sodium chloride solution

So, if 0.1 grams of sodium metal will be present in = \frac{100}{39}\times 0.1=0.256g of sodium chloride solution.

Hence, the mass of sodium chloride solution present is 0.256 grams.

8 0
3 years ago
Suppose you are performing a gas-producing reaction with an unknown metal, X . X ( s ) + 2 H C l ( a q ) ⟶ X C l 2 ( a q ) + H 2
maksim [4K]

Answer:

600,000,000,000,000,000

Explanation:

6 0
3 years ago
How much energy does it take to boil 100 mL of water?
yawa3891 [41]

Answer:

the answer is D. Because the 1 atm pressure of water is 40.65 or 40.7.

8 0
2 years ago
Which object gives off heat?
nadezda [96]

Answer:

Flashlight

Explanation:

A flashlight gives out heat

hope this helps...

7 0
3 years ago
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Which pair of atoms will form an ionic compound? A) One atom of oxygen and two atoms of fluorine Eliminate B) One atom of calciu
wlad13 [49]
An ionic compound is made up of a metal and a nonmetal. This eliminates answer choice A, C, and D because both of the elements listed are nonmetal.

Your correct answer is B) One atom of calcium and two atoms of chlorine. This is because calcium is a metal, and chlorine is a nonmetal.
4 0
3 years ago
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