It is used to separate an insoluble solute from a liquid.
It is normally filtered by using filter paper, the liquid that passes through the paper is called filtrate, meanwhile the insoluble particles and a bit liquid left on the filter paper is called residue.
We can also separate insoluble solute from liquid by decantation.
Answer: a. atominc number= protons= 33
neutrons= mass- atominc number
80-33= 47 neutrons
b.35 protons
46 neutrons
hope this helps
We need to use the effusion formula. I have attached a picture of what this formula looks like because it is a bit hard to type.
effusion formula---> Rate 1/ rate 2= √(M2/M1)
as the questions states, hydrogen gas rate is 4 times the rate of the other gas. so, let call gas 1 the unknown and gas 2 the hydrogen
Rate 1= 1
Rate 2= 4
M1=??
M2= 2 grams
now let's plug in the values and solve for the unknown
1/4 = √(2/x)
x= 32 grams
with the choices given, the gases are either O₂, N₂ or O₃.
O₂ is the one whose mass is 32 because oxygen atomic mass in the periodic table is 16 grams. since we have two oxygens, then 16 x 2= 32
the answer is "<span>
32 grams and oxygen "</span>
Answer:
53.9%
Explanation:
The equation of the reaction is;
C4H6O3+C7H6O3→C9H8O4+C2H4O2
Number of moles of salicyclic acid reacted = 88.3 g/138.121 g/mol = 0.639 moles
1 mole of salicyclic acid yields 1 mole of aspirin
0.639 moles of salicyclic acid also yields 0.639 moles of asprin
Theoretical yield of asprin = 0.639 moles * 180.158 g/mol
Theoretical yield of asprin = 115.12 g
Percent yield = Actual yield/Theoretical yield * 100/1
Percent yield = 62.0 g/115.12 g * 100
Percent yield = 53.9%