2 years ago

What keeps galaxies togther? How?

Chemistry

1 answer:

aleksklad [387]2 years ago

8 0

Tough question, I would suggest using Google maybe, or just plain out asking your science teacher.

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HELP please! Which of these describes how heat is transferred by conduction

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D. Air molecules touch the warm ground, heating them up

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2 years ago

Use the Debye-Huckel Equation to calculate the activity coefficient of Ce4+ at μ = 0.070 M.

Dmitriy789 [7]

english please so i can help

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2 years ago

A mixture of helium, nitrogen and oxygen has a total pressure of 821 mmHg. The partial pressure of helium is 105 mmHg, and the p

skad [1K]

Answer:

Total partial pressure, Pt = 821 mm Hg

Partial pressure of Helium, P1 = 105 mm Hg

Partial pressure of Nitrogen, P2 = 312 mm Hg

Partial pressure of Oxygen, P3 = ? mm Hg

According to Dalton's law of Partial pressures,

Pt = P1 + P2 + P3

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1 year ago

Which of the following pieces of information is given in a half-reaction?

puteri [66]

Answer:

The number of electrons transferred in the reaction

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3 years ago

-- A scientist combines 14 grams of potassium nitrate with an unknown amount of

igor_vitrenko [27]

Answer:

The unknown amount of potassium chloride is 13.6 grams.

Explanation:

The reaction of 14 grams of KNO₃ with KCl produces a total mass of 27.6 grams of the products.

The law of conservation of mass tells us that the total mass of the reactants must be the same that the total mass of the products. So, we can find the mass of KCl as follows:

$m_{r} = m_{p}$

Where r is for reactants and p is for products

$m_{KNO_{3}} + m_{KCl} = m_{p}$

$14 g + m_{KCl} = 27.6 g$

$m_{KCl} = 27.6 g - 14 g = 13.6 g$

Therefore, the unknown amount of potassium chloride is 13.6 grams.

I hope it helps you!

5 0

3 years ago