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dimulka [17.4K]
3 years ago
8

Which of Newton's Laws describes the relationship between the mass

Chemistry
1 answer:
Burka [1]3 years ago
4 0

Answer:

I think it may be C because Newton's second law of motion states that the acceleration of an object equals the net force acting on the object divided by the object's mass.

There's also a possibility of B as well because the Law of force and acceleration but im not sure

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How many grams of NaCl should be added to 250 grams of waterto<br> make a 0.40 m solution?
brilliants [131]

Answer:

5.85 grams of NaCl should be added to 250 grams of water to  make a 0.40 m solution.

Explanation:

molality=\frac{\text{Mass of solute}}{\text{Molar mass of solute}\times \text{ Mass of solvent (kg)}}

Mass of NaCl =x

Molar mass of NaCl = 58.5 g/mol

Molality of the solution = 0.40 m

Mass of the solvent = 250 g = 0.250 kg (1g = 0.001 kg)

0.40 m=\frac{x}{58.5 g/mol\times 0.250 kg}

x=0.40 m\times 58.5 g/mol\times 0.250 kg=5.85 g

5.85 grams of NaCl should be added to 250 grams of water to  make a 0.40 m solution.

7 0
3 years ago
When rubidium metal is exposed to air, two atoms of rubidium, Rb, combine with one atom
Eddi Din [679]

2.1653 g

Explanation:

The molar mass of Rubidium is;

85.468 g/mol

Therefore the moles of Rubidium that reacted with oxygen is;

1.98 / 85.468

= 0.0232 moles

If every two moles of Rubidium reacts with one mole of oxygen then the amount of oxygen consumed in the chemical reaction is;

0.5 * 0.0232

= 0.0116 moles

The molar mass of an oxygen atom is 16 g/mole. Then the amount of O in grams consumed is;

0.0116 * 16

=0.1853 g

The final weight of the Rubidium II Oxide is;

1.98 + 0.1853

= 2.1653 g

8 0
3 years ago
Meteoroids are small objects in space, usually made of rock or metal. These bodies often get close to a planet and fall through
Olenka [21]

Answer:

commets

Explanation:

6 0
3 years ago
Why the noble gases tend not to react
Aloiza [94]
They are called the noble gasesbecause they are very unreactive. The highest occupied energy levels (outermost shells) of their atoms are full: helium atoms have two electrons in their outer energy level. atoms of the other noble gases have eight electrons in their outer energy level.
4 0
4 years ago
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Why is copper a good electrcity conducter
Anvisha [2.4K]

Explanation:

<h3>HOPE IT WILL HELP YOU TO SOLVE YOUR PROBLEM.</h3>

3 0
3 years ago
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