Answer:
acid is like sour taste
and bases increases the H for concentration of gas.
Answer: because its more scientific and "formal"? I guess.
Explanation:
Answer:
The presence of <em>silver nitrate impurities</em> is the most probable cause for the initial precipitate result.
Explanation:
In test for halide ions, silver nitrate 
is used to test for the presence of soluble halide ions. The presence of in the reaction mixture (possibly the HNO3) gave the semblance of test for chlorides, allowing for formation of precipitation in the initial experiment.
This error could have been caused by handling of reagents and used laboratory apparatus during the initial reaction.
Answer:
Mass = 261.34 g
Explanation:
Given data:
Mass of barium nitride = ?
Molarity of solution = 2 M
Volume of solution = 500 mL
Solution;
Volume of solution = 500 mL× 1L /1000 mL
Volume of solution = 0.5 L
Number of moles of of barium nitride:
Molarity = number of moles / volume in L
2 M = number of moles /0.5 L
Number of moles = 2 M × 0.5 L
Number of moles = 1 mol
Mass of barium nitride:
Mass = number of moles × molar mass
Mass = 1 mol × 261.34 g/mol
Mass = 261.34 g
Most probably a graduated cylinder. They have measurements engraved onto the surface, which are generally quite precise.
