B. hydrogen sulfate
C. sulfur hydride
D. sulfuric acid
The compound with the chemical formula (NH4)2S is ammonium sulfide. This name signifies the presence of two ammonium ions and a single sulfide ion in the compound.
The compound with the chemical formula (NH4)2S is ammonium sulfide. In this compound, there are two ammonium ions (NH4) for every sulfide ion (S2-). The positive charge of the two ammonium ions balances the negative charge of the sulfide ion, forming a neutral compound. The prefixes and suffixes in the name of the compound indicate the elements present and their ratios.
#SPJ6
Answer:
B) Heat is given off.
Explanation:
When heat is given off, a chemical change must have occurred and such a reaction is termed an exothermic reaction.
A chemical change is one in which;
Most chemical reactions are accompanied by heat changes.
Given:
1.50 L of highly concentrated Pb(Clo3)2
0.300 L of 0.110 M NaI
Required:
mass precipitate of highly concentrated Pb(Clo3)2
Solution:
M1V1 = M2V2
M1(1.50 L of highly concentrated Pb(Clo3)2) = (0.300 L)(0.110 M NaI)
M1 = 0.022M Pb(Clo3)2 = 0.022 mol/L Pb(Clo3)2
Molar mass of Pb(Clo3)2= 374.2 g/mol
Mass of Pb(Clo3)2 = (0.022 mol/L Pb(Clo3)2)( 1.50 L)( 374.2 g/mol) = 12.35g Pb(Clo3)2