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timofeeve [1]
2 years ago
8

The planet mars has two moons, deimos and phobos. phobos is about 9,000 km from mars and is about six times more massive than de

imos. deimos is about 23,000 km from mars. upon which moon does mars exert a stronger gravitational force?not enough informationphobosdeimos and phobos equallydeimos
Chemistry
1 answer:
Misha Larkins [42]2 years ago
7 0
F = G(m1 m2)/(r)^2

Let m1 be the mass of Mars
Let m2 be the mass of Deimos.
Therefore, 6m2 is the mass of Phobos.

We know that G, m1, and m2 are just constants.

Phobos:

Fp = G(m1 * 6m2)/(9000000m)^2 = 7 × 10^(-14) * G m1 m2

Deimos

Fd = G(m1 * m2)/(23000000m)^2 = 2 × 10^(-15) * G m1 m2

Mars exerts a stronger gravitational force on Phobos since Fp > Fd




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A 20.0 mL solution of NaOH is neutralized with 24.1 mL of 0.200 M HBr. What is the concentration of the original NaOH solution
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Answer:

0.241 M

Explanation:

We'll begin by writing the balanced equation for the reaction. This is given below:

HBr + NaOH —> NaBr + H₂O

From the balanced equation above,

The mole ratio of acid, HBr (nₐ) = 1

The mole ratio of base, NaOH (n₆) = 1

Finally, we shall determine the concentration of the NaOH solution. This can be obtained as follow:

Volume of base, NaOH (V₆) = 20 mL

Volume of acid, HBr (Vₐ) = 24.1 mL

Concentration of acid, HBr (Cₐ) = 0.2 M

Concentration of base, NaOH (C₆) =?

CₐVₐ / C₆V₆ = nₐ/n₆

0.2 × 24.1 / C₆ × 20 = 1/1

4.82 / C₆ × 20 = 1

Cross multiply

C₆ × 20 = 4.82

Divide both side by 20

C₆ = 4.82 / 20

C₆ = 0.241 M

Therefore, the concentration of the NaOH solution is 0.241 M

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