Answer:
B the rides are to the sun
Answer: 17.34 grams of alum will be produced if 0.9875 g of Aluminium foil was used.
Explanation: Reaction to form alum from Aluminium is given as:

We are given Aluminium to be the limiting reactant, so the formation of alum will be dependent on Aluminium because it limits the formation of product.
By stoichiometry,
2 moles of Al is producing 2 moles of Alum
Mass of 2 moles of Aluminium = (2 × 27)g/mol = 54 g/mol
Mass of 2 moles of alum = (2 × 474)g/mol = 948 g/mol
54 g/mol of aluminium will produce 948 g/mol of alum, so

Amount of Alum produced = 17.34 grams
Theoretical yield of alum = 17.34 grams.
Where is the illustration?
Answer:
0.6022×10²³ molecules
Number of moles = 0.1 mol
Explanation:
Given data:
Mass of HCl = 3.65 g
Number of molecules = ?
Number of moles = ?
Solution:
Number of moles:
Number of moles = mass/molar mass
Number of moles = 3.65 g/36.45 g/mol
Number of moles = 0.1 mol
Number of molecules:
1 mole of any substance contain 6.022×10²³ molecules
0.1 mol × 6.022×10²³ molecules/ 1 mol
0.6022×10²³ molecules
A voltaic cell operates such that the ions move from the negative electrode to the positive electrode.The negative electrode is the cathode while the positive electrode is the anode. This is in reverse to the cation-anion nomenclature. Hence, the answer to this problem is choice 2.