How many grams of water are needed to react with 18.9 grams of li2o? given: li2o+h2oâ2lioh?

1 answer:

4 0

The balanced equation for the reaction is as follows;
Li₂O + H₂O ---> 2LiOH
Stoichiometry of Li₂O to H₂O is 1:1
Mass of Li₂O reacted - 18.9 g
Number of Li₂O moles reacted - 18.9 g / 30 g/mol = 0.63 mol
An equivalent amount of moles of water have reacted - 0.63 mol
mass of water required - 0.63 mol x 18 g/mol = 11.34 g
A mass of 11.34 g of water is required

You might be interested in

5. Wskaż liczbę protonów w atomie glinu?<br>

Scrat [10]

Answer:

write english bro

Explanation:

pls i cant understand

3 0

3 years ago

Gerry and his family have moved into a new home with a great backyard. In the yard, they plan to have a garden, a lawn, and a pa

Anestetic [448]

The base of the garden in the scale drawing is 30 centimeters. (because 10x3 equals to 30)
The height of the garden in the scale drawing is 12 centimeters. (because 4x3 equals to 12)
The length of the patio in the scale drawing is 24 centimeters. (because 8x3 equals to 24)
The width of the patio in the scale drawing is 12 centimeters. (because 4x3 equals to 12)

5 0

4 years ago

Read 2 more answers

Calculate the mass of one atom of zinc in grams. (Hint: g/particle)

USPshnik [31]

Answer: $10.17\times 10^{-23}g$

Explanation:

According to avogadro's law, 1 mole of every substance weighs equal to its molecular mass and contains avogadro's number $6.023\times 10^{23}$ of particles.

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given atoms}}{\text{Avogadro's number}}=\frac{1}{6.023\times 10^{23}}=0.16\times 10^{-23}atoms$

1 mole of zinc weighs = 65.38 g

$0.16\times 10^{-23}$ moles of Zinc weigh = $\frac{63.58}{1}\times 0.16\times 10^{-23}=10.17\times 10^{-23}g$

Thus mass of one atom of Zinc weigh $10.17\times 10^{-23}g$

5 0

3 years ago

PLEASE ANSWER QUICKLY IT'S ON MY FINAL WILL GIVE BRAINLIEST FOR WHOEVER ANSWERS THE MOST QUESTIONS

Alexxandr [17]

Answer:

i got you dawg just gimme one sec i'll get to you fr g

Explanation:

4 0

3 years ago

Why do electrons enter the 4s orbital before entering the 3D orbital

garri49 [273]

The 3d sublevel is not filled until after the 4s sublevel, because the 3d sublevel has more energy than the 4s sublevel, and less energy than the 4p sublevel. (:

8 0

3 years ago