Answer:
A thermometer.
Explanation:
An exothermic reaction is a reaction which releases energy through heat. The best way to determine if a reaction is exothermic is by measuring the change in temperature with a thermometer.
Answer:
electrophile(H⁺) is needed to react with alkene in the first step and nucleophile (OH⁻) is not available in the first step
Explanation:
% error =
x 100%
Experimental: 2.85
Actual (theoretical): 2.70
% error =
x 100% = .055555 x 100% = 5.56%
We calculate the molar concentration [Cl⁻] using stoichiometry. MnCl2(aq) is an ionic compound which will have the releasing of 2 Cl⁻ ions ions in water for every molecule of MnCl2 that dissolves.
MnCl2(s) --> Mn+(aq) + 2 Cl⁻(aq)
[Cl⁻] = 0.68 mol MnCl2/1L × 2 mol Cl⁻ / 1 mol MnCl2 = 1.4 M
The answer to this question is [Cl⁻] = 1.4 M
Chlorine is diatomic so the gas is Cl2. Add the molar mass *2 and that is the grams per mole