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2 years ago

How many formula units are there in 7.55 moles potassium chloride?

Chemistry

1 answer:

Drupady [299]2 years ago

8 0

Answer:

mole is equal to 1 moles Potassium Chloride, or 74.5513 grams.

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most planets have --- but none has a --- like earth does. A. a biosphere; hydrosphere., B. an atmosphere; cryosphere., C. an atm

liraira [26]

C. is the answer. i know because i had this question not that long ago.

5 0

3 years ago

Read 2 more answers

Bond length is the distance between the centers of two bonded atoms. On the potential energy curve, the bond length is the inter

vredina [299]

Answer:

The answer is "152 pm".

Explanation:

The bond length from the values inside the atomic radii is calculated according to the query. This would be the upper limit of a molecule's binding length.

The atomic radius of $H= 37.0 \ pm$

The atomic radius of $Br = 115.0 \ pm$

$\text{Bond length = Atomic radius of H + Atomic radius of Br}$

$= 37.0\ pm + 115.0 \ pm\\\\= 152\ pm$

3 0

3 years ago

The mass in grams of 6.0 mol hydrogen gas (contains h2) is

Flura [38]

Mass = moles x molar mass
so mass of 6 moles of h2 is: 6×1×2 = 12g

4 0

3 years ago

Read 2 more answers

If the pH of vinegar is 3.0, what is the concentration of H+ in vinegar?

Cerrena [4.2K]

Answer: The concentration of $H^{+}$ ions in vinegar is 0.001 M.

Explanation:

Given: pH = 3.0

pH is the negative logarithm of concentration of hydrogen ion.

The expression for pH is as follows.

$pH = - log [H^{+}]$

Substitute the value into above expression as follows.

$pH = - log [H^{+}]\\3.0 = - log [H^{+}]\\conc. of H^{+} = antilog (- 3.0)\\= 0.001 M$

Thus, we can conclude that the concentration of $H^{+}$ ions in vinegar is 0.001 M.

5 0

2 years ago

Explain what is going on at the molecular level as your liquid sample cools down and<br> solidifies.

Lemur [1.5K]

Answer:

Freezing. When a liquid is cooled, the average energy of the molecules decreases. At some point, the amount of heat removed is great enough that the attractive forces between molecules draw the molecules close together, and the liquid freezes to a solid.

Note how temperature effects the motion of the atoms or molecules in a liquid. As the temperature of a solid, liquid or gas increases, the particles move more rapidly. As the temperature falls, the particles slow down. If a liquid is cooled sufficiently, it forms a solid.

<h3>I hope it helps you:)</h3>

6 0

2 years ago