Answer:
See the last entry
Explanation:
Remark
Ammonium Nitrate decomposes as follows.
NH4NO3 → N2O + 2H2O
If this does not agree with the reaction you have, let me know.
Step One
Find the molecular Mass of Ammonium Nitrate.
N = 1 * 14 = 14
H = 1 * 3 = 3
N = 1 * 14 14
O3 = 3<u>*16 = 48</u>
Molar Mass =69
Note: the masses used are approximate. Every periodic table is different. When you answer this question use the masses on your periodic table. My numbers are just guides.
Step Two
Find the number of mols in Ammonium Nitrate.
<u>Formula</u>
mols = given mass / molar mass
<u>Givens</u>
given mass = 3.14
Molar Mass = 69
mols = 3.14 / 69
mols = 0.0455
Step 3
moles of water.
1 mol of Ammonium Nitrate = 2 mols of water
0.0455 mols of Ammonium Nitrate = x mols of water
x = 2* 0.0455 mols of water.
x = 0.091 mols of water
Step 4
Find the molecules of water.
1 mol of water = 6.02*10^23 molecules of water
0.091 mol water= x
x = 0.091 * 6.02*10^23
x = 5.48 * 10^23
She will use the periodic table of elements to not only find out the chemical symbols of the elements written within the name, but also to check whether or not the elements are metals and or nonmetals, from this determine the ionic charges if needed for metals, and for metals that have more than one ionic charge, use a Roman numeral to represent the ionic charge that she would be using in writing the chemical formula of the compound.
4. unstable and spontaneously emits alpha particles
Explanation:
Nuclei of uranium-28 atoms are typically unstable and spontaneously emits alpha particles.
Unstable nuclei are nuclei whose neutron/proton ratio is different from its stability ratio.
- Most nuclei heavier than Bi-209 are naturally radioactive.
- Nuclei of U-238 is unstable and it spontaneously disintegrates.
²³⁸₉₂U → ²³⁴₉₀Th + ⁴₂He
- The uranium decays to produce thorium nuclei with the emission of alpha particles, He.
Learn more:
Nuclear decay brainly.com/question/10094982
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Answer: The answer is the second one