Answer:
a. Ag+ and Ca2+
The pair of cations related to the question are as below:
a. Ag+ and Ca2+
b. Hg2^2+ and Ag^+
c. Ba^2+ and Na^+
d. Ca^2+ and Ba^2+
e. Pb^2+ and Ag^+
Explanation:
a. Ag+ and Ca2+ correct
Ag+ will precipitate with dilute hydrobromic acid (HBr) but Ca+2 will not
Ag+ + Br- -----------------> AgBr (s)
Ca+2 + 2Br- ---------------> CaBr2 (aq)
B) Hg2^2+ and Ag^+ Incorrect
Both Hg2^2+ and Ag^+ will precipitate. One has to precipitate while the other does not, so this is incorrect.
C) Ba2 and Na+ both won't precipitate. Incorrect
One has to precipitate while the other does not, so this is incorrect.
D) Ca2+ and Ba 2+both won't precipitate. Incorrect
One has to precipitate while the other does not, so this is incorrect.
E ) Both Pb2 and Ag+ will precipitate. Incorrect
One has to precipitate while the other does not, so this is incorrect.
Answer:
The weight/weight % or percent by mass of the solute is 1.04g.mL
Explanation:
We assume, (i) that the solvent is water, and (ii) that dissolution occurs without change in volume.
So given the standard density of water, the mass of the solution is simply,
(4.87+86.4)g
For solution,
=
= 1.04 g. mL
Because nitrate salts are soluble stuff, you could get significantly higher solution densities if you dissolved more salt (volume change would be fairly negligible).
Answer:
The best available answer here is particle velocity equals the boiling point.
Explanation:
The outer planets<span> are further away, larger and made up mostly of gas. The </span>inner planets<span> (in order of distance from the sun, closest to furthest) are Mercury, Venus, Earth and Mars. After an asteroid belt comes the </span>outer planets<span>, Jupiter, Saturn, Uranus and Neptune.</span>