ANSWER:
all of them
Explanation:
preciseness is measured by how many decimal places are used not by accuracy. since all of these are to the same decimal place they are all equally precise even if they are inaccurate.
Answer:
Distillation. Methanol boils at a lower temp (~70 C), so the methanol vapor will need to be condensed to a liquid again. A high reflux ratio would yield a purer methanol. Advantages: good separation due to difference in boiling points.
Explanation:
Answer: "milk of magnesia" .
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Answer:
The given statement is false.
Explanation:
Acid as are defined as those substance which gives hydrogen ions in their aqueous solutions.
Base as are defined as those substance which gives hydroxide ions in their aqueous solutions.
The given statement is false.The correct statement is :
Bases increase the concentration of hydroxide ions by donating hydroxide ions to water molecules.
5 because the dividing by 2