Answer:
0.404 mol / L
Explanation:
The <em>total moles of barium chloride</em> can be calculated from <em>the volume and concentration of the stock solution</em>:
1.39 mol/L * 0.180 L = 0.2502 moles barium chloride
Now we <u>calculate the concentration of the working solution, by dividing the total moles by the final volume</u>:
0.2502 mol / 0.620 L = 0.404 mol / L
Dalton is 1st, he made the atomic theory.
JJ Thomson is 2nd, he made the plum pudding model of the atom.
Earnest Rutherford is 3rd, he disproved the plum pudding model with alpha particles being shot at gold.
Bohr is 4th, he also made another model after Rutherford
C is your answer. This is simple chemistry history, your teacher should have taught you this
Answer: 101.96 g
Explanation:- Molar mass is the mass of 1 mole of substance.
1 mole of contains 2 moles of Aluminium and 3 moles of Oxygen atom.
Thus mass of will be=
Thus mass of will be
Strength, the capacity of the invi elements
Answer:
453.6 g
Explanation:
The following data were obtained from the question:
Mole of Ag = 4.2 moles
Weight (in grams) of Ag =?
Thus, we can obtain the weight in grams of Ag by doing the following:
Mole of Ag = 4.2 moles
Molar mass of Ag = 108 g/mol
Mass of Ag =.?
Mole = mass /Molar mass
4.2 = mass of Ag /108
Cross multiply
Mass of Ag = 4.2 × 108
Mass of Ag = 453.6 g
Thus, the weight (in grams) of 4.2 moles of Ag is 453.6 g