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cricket20 [7]
2 years ago
14

The molarity of a solution that contains 8.0 g of NaOH in a liter of solution is

Chemistry
1 answer:
Kay [80]2 years ago
8 0

Answer:

0.2M NaOh

Explanation:

there are 0.2 mol of NaOH in 8.0 g. (8.0/40) =0.2. Molarity = mol/L = 0.2M.

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A softball is thrown with 145 Joules of kinetic energy. If the ball is moving at 20.0 m/s, what is the mass of the ball in kg?
Tasya [4]

Answer:

0.725 kg

Explanation:

Step 1: Given data

  • Kinetic energy of the softball (K): 145 J
  • Speed of the softball (v): 20.0 m/s
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Step 2: Calculate the mass of the softball

We will use the following expression.

K = 1/2 × m × v²

m = 2 K / v²

m = 2 × 145 J / (20.0 m/s)²

m = 0.725 kg

The mass of the softball is 0.725 kg.

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3 years ago
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Explanation:

he process of the scientific method involves making conjectures (hypotheses), deriving predictions from them as logical consequences, and then carrying out experiments or empirical observations based on those predictions.

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3 years ago
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