<span>Because its a Chemical combination of 2 different pure Elements, it's a Compound. </span>
Answer:
Mass = 153.48 g
Explanation:
Given data:
Volume of solution = 2.50 L
Molarity = 0.48 M
Mass required = ?
Solution:
Molarity = number of moles / volume in litter
Number of moles = Molarity × volume in litter
Number of moles = 0.48 M × 2.50 L
Number of moles = 1.2 mol
Mass of HI:
Number of moles = mass/molar mass
Mass = Number of moles × molar mass
Mass = 1.2 mol × 127.9 g/mol
Mass = 153.48 g
Answer: D
Explanation:
A mole corresponds to the mass of a substance that contains 6.023 x 1023 particles of the substance. The mole is the SI unit for the amount of a substance. Its symbol is mol. By definition: 1 mol of carbon-12 has a mass of 12 grams and contains 6.022140857 x 1023 of carbon atoms (to 10 significant figures)
In aqueous solutions, soluble salts will dissociate into
ions. Since all salts of nitrates are completely soluble in water, AgNO3 and
KNO3 will dissociate into Ag+, K+, and NO3- ions. KBr is also soluble in water,
forming K+, Br- ions.
Rewriting the equation:
Ag+ + NO3- + K+ NO3- -> K+ + NO3- + AgBr(s)
Spectator ions are those that does not participate in the
reaction, which means they are found in both sides in the equation above. K+
and NO3- are those ions.
