Answer:
The answer to your question is letter A. 65.9%
Explanation:
Data
actual yield = 1.20 g
theoretical yield = 1.82 g
Formula
percentage yield = 
Substitution
percentage yield = 
Simplification and result
percentage yield = 0.6593 x 100
percentage yield = 65.9 %
Yes. Whenever a chemical change is observed (a few examples being change in color, odor, or precipitate formation) a new substance is formed.
Answer:
B
Explanation:
increasing concentration on products will oppose the reaction . the concentration of reactants increase
Considering choices;
a. CH3COOH
b. H2S
c. H2PO4
d. HNO3
The answer would be HNO3; this is because it the strongest acid. Strong acids are acids that are fully ionized while weak acids are only partially ionized. At the same concentrations, strong acids have a higher concentration of hydrogen than weak acids. Examples of strong acids include; hydrocloric acid and nitric acid, while weak acids include; ethanoic acids.
Answer:
sodium chloride is produced= Na+ Cl⇒ NaCl
Explanation: when sodium reacts with chlorine, sodium gives out its electron to chlorine for them to become stable. in the end they form an ionic compound known as sodium chloride
