2 years ago

2MG+O2 ...........2MGO

1 answer:

5 0

Mg + 1/2 O2 → MgO

1 mol = 24 g of Mg

X mol = 12 g of Mg

x = 0.5 moles of Mg

Mg :MgO = 1:1 (coefficient from equations using mole ratio)

So

0.5 moles of MgO

1 mol MgO = (24+16) g = 40 g

0.5 moles of MgO = 0.5 × 40

= 20 g of MgO produced

You might be interested in

If the pressure, volume, and temperature of a gas are known, which can most likely be found by using the ideal gas law?

alukav5142 [94]

Answer:

the moral amount of the gas.

5 0

2 years ago

Peut-on être exact sans être précis?

Evgesh-ka [11]

Answer:

I think you can.

8 0

2 years ago

crash course video about periodic table - The Periodic Table: Crash Course Chemistry #4 - write a reflection about this video

Stolb23 [73]

Answer:

I liked the video, it gave us lots of information about___. __ means/ is about.

Explanation:

7 0

2 years ago

Identify the for of energy (A)thermal (B)kinetic (C)chemical (D)electrical

RoseWind [281]

Answer:

C Chemical Energy

Explanation:

food gives us chemical energy which may be transformed to other later..

please mark me brainliest

3 0

2 years ago

Read 2 more answers

How many liters of carbon dioxide will 0.5 mole of lithium hydroxide (LiOH) absorb? (One mole of any gas occupies 22.4 L under c

Svet_ta [14]

Answer:

0.5 moles of LiOH will absorb 5.6 L of $CO_2$

Explanation:

According to law of conservation of mass, the sum of mass on the reactant side must be equal to the sum of mass on product side.

The balanced chemical equation is:

$2LiOH+CO_2\rightarrow Li_2CO_3+H_2O$

2 moles of LiOH absorb 1 mole of $CO_2$ i.e. 22.4 Liters at STP

0.5 moles of LiOH absorb

= $\frac{22.4}{2}\times {0.5}=5.6Liters$

0.5 moles of LiOH will absorb 5.6 L of $CO_2$

4 0

2 years ago