Answer:
HCl solution - H30+ and Cl ions. pH 3
NaCl - Na+ and Cl-. pH 7
Explanation:
a) HCl solution - the hydrogen ion combines with water molecule to form the hydronium molecule which is responsible for acidity. The chloride ion is also found in solution.
pH = -log [H+] = -log(10^-3) = 3
b) NaCl 10-3 g. The solid dissocates in water forming the Na+ and Cl- ions. None of these ions affect pH
Answer:
329.7%
Explanation:
Percent Yield = Actual Yield/ Theoretical Yield x 100%
Percent Yield = 105.5g/32 x 100% = 329.69 ≈ 329.7 %
Answer:6 significant figures
Explanation:
Answer: Using biofuels instead of fossil fuels because biofuels are renewable is an example of renewable sources.
Explanation:
Biofuels is an example of renewable sources because biofuels is extracted from different parts of plants such as leaves and stem etc and plants is grown again and again and biofuels is again extracted from it. So we can say that biofuels is a renewable source.
Chloroform combines with acetone in the presence of potassium hydroxide to give chloretone, which is used as a sleep producing (hypnotic) drug.
