Answer:
Option a
Explanation:
a)
Atomic number of I = 53
No. of electrons = atomic number + no. of negative charge
= 53 + 1 = 54
Xe
Atomic number of Xe = 54
In a neutral atom, no. of electron is equal to no. of protons.
So. no. of electron in Xe = 54
a)
Atomic number of I = 56
No. of electrons = atomic number - no. of positive charge
= 56 - 2 = 54
All the species in the set a have 54 electrons.
Answer:
373.1 mL of AgCN (aq) must be poured into your electrolysis vat to ensure you have sufficient Ag to plate all of the forks.
Explanation:
Mass of silver to be precipitated on ecah spoon = 0.500 g
Number of silver spoons = 250
Total mass of silver = 250 × 0.500 g = 125 g
Moles of AgCN = n =
Volume of AgCN solution =V
Molarity of the AgCN = 2.50 M
(1 L = 1000 mL)
373.1 mL of AgCN (aq) must be poured into your electrolysis vat to ensure you have sufficient Ag to plate all of the forks.
Answer:
Explanation:
Hello,
In this case, since at 60 °C, 108 grams of ammonium bromide are completely dissolved in 100 grams of water for a saturated solution, once it is cooled to 30 °C, wherein only 83.2 grams are completely dissolved in 100 grams of water, the following mass will precipitate:
Best regards.