Answer:
-3
General Formulas and Concepts:
<u>Chemistry - Atomic Structure</u>
- Protons have a positive (+) charge
- Neutrons have a neutral (0) charge
- Electrons have a negative (-) charge
Explanation:
<u>Step 1: Define</u>
7 protons, 9 neutrons, 10 electrons.
+7, +0, -10
<u>Step 2: FInd charge</u>
7 + 0 - 10 = -3
Fe(No3)2 because Fe(No3)2 is soluble
Lichens are an examples of Symbiosis
First, let us find the corresponding amount of moles H₂ assuming ideal gas behavior.
PV = nRT
Solving for n,
n = PV/RT
n = (6.46 atm)(0.579 L)/(0.0821 L-atm/mol-K)(45 + 273 K)
n = 0.143 mol H₂
The stoichiometric calculations is as follows (MW for XeF₆ = 245.28 g/mol)
Mass XeF₆ = (0.143 mol H₂)(1 mol XeF₆/3 mol H₂)(245.28 g/mol) = <em>11.69 g</em>
