How many grams are in 4.56 moles of Mg(OH)2

Scientists excavating at the bottom of the ocean come across fossilized remains of an ancestor of a mountain goat. How can this

galina1969 [7]

There was land on that surface before there was water

4 0

3 years ago

Convert 220 grams of CO2 into Moles.

LenaWriter [7]

Answer:

. 44.0 g/mol.

Explanation:

4 0

3 years ago

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Question 9 of 10

UkoKoshka [18]

<span>C. There was a ground wire attached to the outlet.

option C is your answer 'cause if there was a ground wire, then electricity would flow through it & maria didn't get any electric shock

Hope this helps!
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5 0

3 years ago

An aqueous solution is 0.467 m in hcl. what is the molality of the solution if the density is 1.23 g/ml?

Reika [66]

Answer:
molarity = 0.385 moles/kg

Explanation:
Assume that the volume of the aqueous solution given is 1 liter = 1000 ml
Now, density can be calculated using the following rule:
density = mass / volume
Therefore:
mass = density * volume = 1.23 * 1000 = 1230 grams
Now, 0.467 m/L * 1L = 0.467 moles of HCl
We will get the mass of the 0.467 moles of HCl as follows:
mass = molar mass * number of moles = (1+35.5)*0.467 = 17.0455 grams
Now, we have the mass of the solution (water + HCl) calculated as 1230 grams and the mass of the HCl calculated as 17.0455 grams. We can use this information to get the mass of water as follows:
mass of water = 1230 - 17.0455 = 1212.9545 grams
Finally, we will get the molarity as follows:
molarity = number of moles of solute / kg of solution
molarity = (0.467) / (1212.9594*10^-3)
molarity = 0.385 mole/kg

Hope this helps :)

5 0

3 years ago

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175 ml of a 1.6 m solution of kcl is diluted to a new volume of 1.0 l. what is the new concentration of the solution? (3 points)

djyliett [7]

175 ml of a 1.6 m solution of KCl is diluted to a new volume of 1.0 L. The new concentration of the solution is 0.28 m KCl.

Hence, Option (B) is correct answer.

<h3>What is Concentration ?</h3>

Concentration is defined as the measure of how much substance there is mixed with another substance.

<h3>How to find the concentration ?</h3>

To find the concentration use the dilution formula

C₁V₁ = C₂V₂

where,

C₁ = Concentration of starting solution

C₂ = Concentration of final solution

V₁ = Volume of the starting solution

V₂ = Volume of the final solution

Now put the values in above formula we get

C₁V₁ = C₂V₂

1.6 × 0.175 = C₂ × 1.0

0.28 = C₂ × 1.0

C₂ = 0.28

Thus from the above conclusion we can say that 175 ml of a 1.6 m solution of KCl is diluted to a new volume of 1.0 L. The new concentration of the solution is 0.28 m KCl.

Hence, Option (B) is correct answer.

Learn more about the Concentration here: brainly.com/question/17206790

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3 0

2 years ago