Answer:
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Explanation: Nickel atoms<span> have 28 protons in their </span>atomic nuclei<span>, giving </span>nickel<span> the</span>atomic<span> number 28. In addition to 28 protons, a </span>nickel atomic nucleus<span> contains 30 to 36 neutrons, depending on the isotope. ... The </span>atomic nuclei<span> of </span>copper<span> also include 34 to 37 neutrons, depending on the isotope.</span>
Probably its atomic number (proton number), because this is how they are arranged already.
Other factors are their form (metal/non-metal) etc., which determines how they react with each other and bond.
Another important factor is the number of electrons in their valent (outer) shell. This is because it tells use how the atom will react/bond with other atoms, how 'violent' that reaction will be, and whether it will bond at all (eg. nobel gases)
Answer:
152.4 g
Explanation:
Step 1: Given data
Number of H atoms: 8.334 × 10²⁴ atoms
Step 2: Calculate the moles of H corresponding to 8.334 × 10²⁴ atoms of H
We will use Avogadro's number, that is, there are 6.022 × 10²³ atoms of H in 1 mole of H.
8.334 × 10²⁴ atom × (1 mol/6.022 × 10²³ atom) = 13.84 mol
Step 3: Calculate the moles of ammonium acetate (NH₄CH₃CO₂) that contain 13.84 moles of H
The molar ratio of NH₄CH₃CO₂ to H is 1:7. The moles of NH₄CH₃CO₂ that contain 13.84 moles of H are 1/7 × 13.84 mol = 1.977 mol.
Step 4: Calculate the mass corresponding to 1.977 moles of NH₄CH₃CO₂
The molar mass of NH₄CH₃CO₂ is 77.08 g/mol.
1.977 mol × 77.08 g/mol = 152.4 g