Answer:
16 g Ag
General Formulas and Concepts:
<u>Chemistry - Stoichiometry</u>
- Using Dimensional Analysis
<u>Chemistry - Atomic Structure</u>
Explanation:
<u>Step 1: Define</u>
[RxN] Cu (s) + AgNO₃ (aq) → CuNO₃ (aq) + Ag (s)
[Given] 25 g AgNO₃
<u>Step 2: Identify Conversions</u>
[RxN] 1 mol AgNO₃ = 1 mol Ag
Molar Mass of Ag - 107.87 g/mol
Molar Mass of N - 14.01 g/mol
Molar Mass of O - 16.00 g/mol
Molar Mass of AgNO₃ - 107.87 + 14.01 + 3(16.00) = 169.88 g/mol
<u>Step 3: Stoichiometry</u>
<u /> = 15.8744 g Ag
<u>Step 4: Check</u>
<em>We are given 2 sig figs. Follow sig fig rules and round.</em>
15.8744 g Ag ≈ 16 g Ag
It would have 8 neutrons. Since the atomic number = the number of protons in the atom, oxygen has 8 protons. If the atomic mass is made up of protons and neutrons, then it would have 8 neutrons as well (8+8=16)
They have different mass numbers, because they have different numbers of neutrons, and neutrons have a mass of 1, meaning changing the number of them will result in a change in the mass of the element
1. Phosphate Group,Pentose sugar, and Nitrogen base
2. Not sure
3.These are found in RNA cytosine, guanine, adenine and uracil.