3 years ago

Help me pleeaseee!!!!

Chemistry

1 answer:

salantis [7]3 years ago

6 0

Option 7 is the correct answer

You might be interested in

How many grams is 6.31 x 1024 molecules of BF3 in scientific notation?

zhannawk [14.2K]

Answer:

6,461.44 sana po makatulong

5 0

3 years ago

3.5 liters of 0.4M HCI

nignag [31]

Answer: 1.4 moles

Explanation:

I can only assume you are looking for the amount of moles in 0.4M. the capital M means Molarity.

Molarity=moles of solute/liters of solution

Since we know the molarity is 0.4, we can plug this into our equation

$0.4M=\frac{xmoles}{3.5L}$

moles= 1.4

7 0

3 years ago

How many molecules of Iron(II)oxide are present in 35.2*10^-23 g of Iron (II)oxide?

slava [35]

Answer:

R.F.M of Iron (II) oxide :

${ \tt{ = (56 \times 2) + (16 \times 3)}} \\ = 160 \: g$

Moles :

${ \tt{ \frac{35.2 \times {10}^{ - 23} }{160} }} \\ = 2.2 \times {10}^{ - 24} \: moles$

Molecules :

${ \tt{ = 2.2 \times {10}^{ - 24} \times 6.02 \times {10}^{23} }} \\ = 1.3244 \: molecules$

4 0

3 years ago

Which of these periods contain elements with electrons in s, p, d, and f orbitals?

zmey [24]

I think the answer is D. Periods 6-7, Because the periods that would contain elements with electrons in s, p, d, and f orbitals are periods 6-7.

(I hope this helps you a lot! :) Have a nice day!)

7 0

3 years ago

Soil is formed from A. ancestors B. offspring C. Parent material D. recipe

trasher [3.6K]

A i’m not to sure though

6 0

3 years ago