Election current because voltage is a measurement, information doesn't apply to all electrical devices and the wires within are usually copper bc it conducts and hardly ever will the wires be anything different because copper is cheap
Answer: Which Group 1A elements are less dense than pure water at 4 degrees C? Li Na K. How does density vary with temperature? Temperature up, density down.
Explanation:
Answer:
Compounds with Carbonate ions are less soluble than the compounds with Chlorate ions.
Explanation:
The reason is that the compounds with carbonate ions have less attraction between positive and negative charges. (Solvation)
A covalent bond is stronger than an ionic bond because the covalent bond doesn’t separate in water
Answer:
0.0386
Explanation:
To make a solution, we need a certain amount of the solute to be dissolved in the solvent. The solvent is the carrier medium usually water in traditional wet chemistry.
Now, in this particular question, it should be known that methyl alcohol is the solute, while water is the solvent.
We need to calculate the mole fraction of the solute as asked by the question. Now what we do is to find the number of moles of each, add together, then divide the number of moles of methyl alcohol by the sum of the moles of both.
Firstly, we calculate the number of moles of methyl alcohol present. This is mathematically equal to dividing mass by molar mass
Molar mass of methyl alcohol (CH3OH) is 12 + 4(1) + 16 = 32g/mol
The number of moles is thus 1.2/32 = 0.0375 moles
Now, we calculate the number of moles of water. The molar mass of water is 18g/mol
The number of moles of water is thus 16.8/18 = 0.93333
The mole fraction of the solute is thus:
0.0375/(0.0375 + 0.9333) = 0.0386
