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Alex787 [66]
3 years ago
5

Seawater is mostly a solution of sodium chloride in water. The concentration varies, but marine biologists took a sample with an

amount concentration of 0.56 mol/L. Calculate the mass of sodium chloride in the biologists 5.0L
Chemistry
1 answer:
sineoko [7]3 years ago
3 0

Answer:

1.0.16

2.a.355mg

b. 8.07mmol/L

3.7.83%

Explanation:

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Rzqust [24]

Answer:

Kinetic Energy

Explanation:

Kinetic energy is the energy inside moving objects of things.

8 0
3 years ago
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Boyle's law states that the pressure of a gas is always:
natka813 [3]

Answer:

d. inversely proportional to the volume of its container.

Explanation:

Boyle's law  states that at constant temperature and number of moles, the pressure of the gas is inversely proportional to the volume of the gas.

Thus, P ∝ T

P is the pressure

T is the temperature

For two gases at same temperature, the law can be written as:-

{P_1}\times {V_1}={P_2}\times {V_2}

<u>Thus, according to the question, the answer is:- d. inversely proportional to the volume of its container.</u>

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3 years ago
Please, I need at least accurate answers for my Sound Knowledge Check for my Science class.
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Answer:

1.A

2.A

3.C

4.C

5.B

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3 years ago
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Question 1 2.3 kJ is how many J?​
Vinil7 [7]

Answer:

2300J

Explanation:

1 kilojoule is 1000joules so to get how much is 2.3 multiply it with 1000

4 0
2 years ago
What is the molarity of a 3.0 solution of magnesium chloride prepared with 9.0 molecules of MgCl2 A. 6.0 M B. 3.0 M C. 27.0 M D.
Gala2k [10]

Answer:

Option B. 3.0 M

Explanation:

From the question given above, the following data were obtained:

Volume of solution = 3.0 L

Mole of MgCl₂ = 9 moles

Molarity =?

Molarity can simply be defined as the mole of solute per unit litre of the solution. Mathematically, it can be expressed as:

Molarity = mole of solute /Volume of solution

With the above formula, we can obtain the molarity of the solution as follow:

Volume of solution = 3.0 L

Mole of MgCl₂ = 9 moles

Molarity =?

Molarity = mole of solute /Volume of solution

Molarity = 9 / 3

Molarity = 3 mol/L = 3.0 M

Thus, the molarity of the solution is 3 M

8 0
3 years ago
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