3 years ago

Can someone pls summarise this for me cbb ILL BRAINLIST U!!:)

1 answer:

7 0

Electrons in an atom are found on different electron shells depending on how much energy they possess, and they determine how atoms will interact with each other. The outermost electron shell holds the valance electrons.

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I) What could Linda do to find out if there were salts dissolved in the

zhenek [66]

Answer:

she can use crystalization method.

Explanation:

She should boil that liquid on flame and then cool it down on mederate temprature and check it out rather the crystals formed or not . if crystals are formed then there will be salts.

And if she want topredict the certain salt then she has to perform certain reactions.

6 0

3 years ago

What is the molecular weight mass for KOH

lubasha [3.4K]

The weight is 56.1056 g/Mol hoped this helped

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3 years ago

The sample of 15.0 g of KCl is dissolved into a solution with a total volume of 250.0 mL. What is the molarity of KCl in the sol

lina2011 [118]

Answer:

0.805 M.

Explanation:

Hello!

In this case, since the molarity of a solution is computing by dividing the moles of solute over the volume of solution in liters (M=n/V), for 15.0 g of potassium chloride (74.55 g/mol) we compute the corresponding moles:

$n=15.0gKCl*\frac{1molKCl}{74.55gKCl}=0.201molKCl$