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Rudiy27
3 years ago
10

John rode his bike down the street to the east. He rode 100 meters in 25

Chemistry
1 answer:
EleoNora [17]3 years ago
7 0

Answer:

The answer is D.

Explanation:

Given that velocity also applies speed formula, S = D ÷ T where D represents distance and T is time :

S = D ÷ T

S = 100m ÷ 25s

S = 4m/s

V = 4m/s east

The difference between speed and velocity is that speed has only magnitude but velocity has magnitude and direction.

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A 20.0 mL sample of glycerol has a mass of 25.2 grams. What is the mass of a 57 mL sample of glycerol?
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Answer:

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Read 2 more answers
If it requires 37.5 mL of a 0.245 M HBr solution to neutralize 18.0 mL Mg(OH)2, what is the concentration of the Mg(OH) 2 soluti
xenn [34]
2 HBr + Mg(OH) 2 yields Mg(Br) 2 + 2 H2O
M1V1 = M2V2
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9.1875 = (M2)(18.0 mL)
9.1875/(18.0 mL) = (M2)(18.0 mL)/(18.0 mL)
0.51041
this is not the complete answer as the mol to mol ratio must be considered!
For every 2 mols of HBr there is 1 mole of <span>Mg(OH)2; ratio = 2:1
</span>0.51041 / 2 = 0.25520
M2 = 0.25520
0.25520 M of<span> Mg(OH)2 solution</span>
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Explanation:

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The specific gravity of water is 1.0 True 
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