The answer is package c because each cd would cost $1.87, which is the lowest price
The increase in the number of atoms allows the strong positive charge of the nucleus to increase. Thus, due to the number of positive protons increasing in the nucleus, the positive charge increases. On the negatively charged electron cloud, the high positive charge of the nucleus has a strong tug.
Answer: , 4 molecules of ammonia, NH3(g) is produced; 2 molecules of ammonia, NH3(g) is produced respectively
Explanation:
The balanced equation is stated below N2(g) + 3H2(g) → 2NH3(g)
1 mole of N2(g) reacts with 3 moles of H2(g) to yield 2 moles of NH3(g)
1) If 2 molecules of N2 react, then the balanced equation will be
2N2(g) + 6H2(g) → 4NH3(g)
Thus, 4 molecules of ammonia, NH3(g) is produced
2) If 3 molecules of H2 react, then the balanced equation will be
N2(g) + 3H2(g) → 2NH3(g)
Thus, 2 molecules of ammonia, NH3(g) is produced
The given question is incomplete. The complete question is:
In the reaction 
, identify the oxidizing and reducing agent.
Answer: reducing agent. : Zn
oxidizing agent : 
Explanation:
Oxidation reaction : When there is an increase in oxidation state number.
Reduction reaction : when there is a decrease in oxidation state number.
Zinc metal has undergone oxidation, as its oxidation state is changing from 0 to 2+. Zinc metal is getting converted into zinc ions.
ions has undergone reduction, as its oxidation state is changing from +2 to 0. Copper ions are getting converted into copper metal.
The chemical agent which itself get oxidized and reduce others is called reducing agent.
is a reducing agent.
The chemical agent which itself get reduced and oxidize others is called oxidizing agent. is an oxidizing agent.
Answer:
all calcium atoms have an atomic number of 20 but there are three isotopes of calcium - 39, 40, and 42
