Answer:
35.42g
Explanation:
LiOH + KCI → LiCl + KOH
Let us determine the molar mass of LiOH and LiCl. This is illustrated below:
Molar Mass of LiOH = 7 + 16 + 1 = 24g/mol
Molar Mass of LiCl = 7 + 35.5 = 42.5g/mol.
Now, we can obtain the theoretical yield of LiCl as follow:
From the equation above,
24g of LiOH reacted to produce 42.5g of LiCl.
Therefore, 20g of LiOH will react to produce = (20 x 42.5)/24 = 35.42g of LiCl.
From the above calculations, the theoretical yield of LiCl is 35.42g
Answer:
The answer is
<h2>2.00 %</h2>
Explanation:
The percentage error of a certain measurement can be found by using the formula
From the question
actual measurement = 46.37 g
error = 47.25 - 46.37 = 0.88
The percentage error of the measurement is
We have the final answer as
<h3>2.00 %</h3>
Hope this helps you
Answer:
D. 0.063 mol
Explanation:
We can calculate the number of moles by using the <em>definition of molarity</em>:
- Molarity = moles / liters
As we are given both the <em>molarity and the volume</em>:
We can <u>calculate the number of moles</u>:
Thus the answer is option D.
The volume of a substance is the quantity of the substance present at the definite temperature and pressure.
Explanation:
1ml of water has a volume of one cubic centimeter(1cm3). When a substance is cooled it causes the molecules to slow down and get close together occupies a smaller volume that results in density.
If the hot water is less dense it will float in room temperature and if the cold water is more dense it will sink in room temperature.
Density is the mass per unit volume of a substance. The density of water is given as 1g/cm3. It is mass divided by volume and water is used as the base for establishing the unit of mass which states cubic centimeter(1cm3) of water weighs one gram (1g). If the water is heated it expands or increases in volume. if the volume increases it becomes less dense.
I think the answer is visible light because all the other ones have a wave at the end