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Elena L [17]
3 years ago
6

What mass of water must be added to 5g of nacl to make 5% mass persentage of the solution?

Chemistry
1 answer:
Vitek1552 [10]3 years ago
8 0

Answer:-

95 grams

Explanation:-

Let the mass of water to be added be M

So total mass = 5 + M

So 5% of this solution has 5g of NaCl by mass.

∴ (M+5) x (5/100) = 5

M+5 = 5 x 100/5

M+5=100

M= 100-5

95

So amount of water to be added is 95 gram

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Answer:

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Explanation:

Newton's second law of motion states that the force applied to an object is directly proportional to the rate of change of momentum with respect to time, going in the same direction as the force.

Let F = force, m = mass of object, v = velocity of object, mv = momentum.

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Let us assume that the object starts from rest to 5 m/s within 1 seconds, hence:

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200 N = m[(5 m/s - 0 m/s) / (1 s)]

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