Answer:
Explanation:
Both calcium bromide and sodium bromide are ionic in nature so they will generate ions when dissolved in water .
CaBr₂ = Ca⁺² + 2Br⁻¹
NaBr = Na⁺ + Br⁻
Calcium bromide will generate greater number of ions per molecule according to chemical equation given above .
Benzoic acid ionizes but partially . Suger is a purely covalent compound so it does not generate ions at all .
In view of statement written above , the compounds can be arranged as follows according to conductivity from most to least conductive .
calcium bromide > sodium bromide > benzoic acid > sugar .
Answer: n = m/M = 10 g / 22.99 g/ mol = 0.43 mol
Explanation: M(Na) = 22.99 g/ mol
<span>Analytic chemistry because he is comparing to types of refined gasoline. </span>
Water solubility of oxygen at 25oC and pressure = 1 bar is at 40 mg/L water. In air with a normal composition the oxygen partial pressure is 0.2 atm. This results in dissolution of 40 . 0.2 = 8 mg O2/L in water that comes in contact with air.
Answer:
The statement is false
Explanation:
Number of moles of alkene = 2.31 × 85/1000 = 0.196 moles
Number of moles of Br2 = 3.55 × 7.5/1000 = 0.0266 moles
Given that the reaction is 1:1
1 mole of alkene reacts with 1 mole of bromine
0.196 moles of alkene should react with 0.196 moles of bromine
Hence, to achieve 100%yield, 0.196 moles of bromine and not 25mmols of elemental bromine
