3 years ago

There is a limited amount of matter on Earth.

2 answers:

8 0

I'm not sure where the question is here. Yes it is true that there is a limited amount of matter on Earth...

5 0

There is a limited amount of matter on earth true

You might be interested in

sweet-ann [11.9K]

D because the mass evens out the objct

4 0

3 years ago

Yuliya22 [10]

1.3 x 10^21 atoms Na is 4.63230769231 mol Na

4.63230769231 mol Na * 23g/mol Na = 106.543076923g

8 0

3 years ago

Mars2501 [29]

Answer:

b I hope this is right good luck

7 0

3 years ago

Sergeu [11.5K]

Answer: 15.8 g of $KMnO_4$ will be required to produce 1.60 grams of $O_2$

Explanation:

To calculate the moles :

$\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}$

$\text{Moles of} O_2=\frac{1.60g}{32g/mol}=0.05moles$

$2KMnO_4\rightarrow K_2MnO_4+MnO_2+O_2$

According to stoichiometry :

As 1 mole of $O_2$ is given by = 2 moles of $KMnO_4$

Thus 0.05 moles of $O_2$ is given by = $\frac{2}{1}\times 0.05=0.10moles$ of $KMnO_4$

Mass of $KMnO_4=moles\times {\text {Molar mass}}=0.10moles\times 158g/mol=15.8g$

Thus 15.8 g of $KMnO_4$ will be required to produce 1.60 grams of $O_2$

5 0

3 years ago

irakobra [83]

Ask your teacher then tell her Chad Bono Demanded it

5 0

3 years ago