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Mrac [35]
3 years ago
13

The picture shows an aerialist walking on a tightrope and holding a balancing bar. An action-reaction pair of forces exist betwe

en—
A- the two ends of the rope
B- the rope and the balancing bar
C- the aerialist feet and the rope
D- the aerialist arms and legs.

Chemistry
1 answer:
noname [10]3 years ago
3 0

Answer:

C

Explanation:

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what is the molarity of a solution of sodium hydroxide if it 15.0 mL requires 25.0 ml of 0.25M HCl to reach the end point
DaniilM [7]

Answer:

0.42 M

Explanation:

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

HCl + NaOH —> NaCl + H₂O

From the balanced equation above,

The mole ratio of acid, HCl (nₐ) = 1

The mole ratio of base, NaOH (n₆) = 1

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

Volume of acid, HCl (Vₐ) = 25 mL

Molarity of acid, HCl (Mₐ) = 0.25 M

Volume of base, NaOH (V₆) = 15 mL

Molarity of base, NaOH (M₆) =?

MₐVₐ / M₆V₆ = nₐ/n₆

0.25 × 25 / M₆ × 15 = 1

6.25 / M₆ × 15 = 1

Cross multiply

6.25 = M₆ × 15

Divide both side by 15

M₆ = 6.25 / 15

M₆ = 0.42 M

Therefore, the molarity of the base, NaOH is 0.42 M

6 0
3 years ago
What mass of water is produced when 425 g of octane is burned?
Vitek1552 [10]
659. 48 g of water is produced
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Which description BEST describes a particle that contains 18 electrons, 18 neutrons and 16 protons?
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Can you substitute evaporated milk for condensed milk
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In 1939, at the age of 20, a man stood 270 cm tall (over 8 1/2 feet) and wore size 37 shoes! The hormonal disorder from which he
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