3 years ago

Please help me I will give you the brain thing and extra points. image below part 8

Chemistry

1 answer:

Marizza181 [45]3 years ago

8 0

The correct answer should be D :)

You might be interested in

I really need help with this I would really appreciate it

gulaghasi [49]

PV=nRT will give you the answer I think. I haven’t worked with a certain unit in that problem

3 0

3 years ago

What is the mass of KOH found in a 785 mL of a 1.43 M solution of KOH

My name is Ann [436]

Molarity is defined as the ratio of number of moles to the volume of solution in litres.

The mathematical expression is given as:

$Molarity = \frac{Number of moles}{volume of solution in litres}$

Here, molarity is equal to 1.43 M and volume is equal to 785 mL.

Convert mL into L

As, 1 mL = 0.001 L

Thus, volume = $785\times 0.001$ = 0.785 L

Rearrange the formula of molarity in terms of number of moles:

$Number of moles =molarity\times volume of solution in litres$

n = $1.43 M \times 0.785 L$

= 1.12255 mole

Now, Number of moles = $\frac{mass in g}{molar mass}$

Molar mass of potassium hydroxide = 56.10 g/mol

1.12255 mole = $\frac{mass in g}{56.10 g/mol}$

mass in g = $1.12255 mole\times 56.10 g/mol$

= 62.97 g

Hence, mass of $KOH$ = 62.97 g

7 0

3 years ago

Which of the following terms best describes an atom which is chemically unreactive?

frez [133]

I think it is full because an atom is really small and can’t really be unreactive

7 0

3 years ago

In which of the following are the symbol and name for the ion given correctly?

Naya [18.7K]

The answer you want is a

6 0

3 years ago

What do nonmetals and metals seek to do when having full outermost shells?

IceJOKER [234]

Answer: C

Explanation:

5 0

3 years ago