The given statement is false because for hot vacuum filtration, the filter paper should be wet rather than dry when pouring the hot solution into the Buchner funnel. This is because The possible explanation the filter paper needs to be wetted is not only to allow it to adhere to the funnel, but also to promote the solute to filter down readily across its pores of the paper without wetting it (this is true for organic and aqueous solvents).

5 0

3 years ago

A temperature change in a reaction indicates_____.

natita [175]

A temperature change in a reaction indicates a chemical change

8 0

3 years ago

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A 0.25 M solution of NaCl must be diluted into a 250 mL solution (0.08 M). What volume should be taken from the original solutio

mihalych1998 [28]

Answer:

80ml

Explanation:

you have your initial concentration to be 0.25 mole on your final volume to be 250 ml and your final concentration to be 0.8 0.08 molar you don't have your initial volume sotify your initial volume you use the expression see 1 * 21 equals see two times between you make when when the subject then 1 equals to 2 x 2/3 one you know substitute your values into it to get being one that's your original volume to be at the latest or 80 ml

7 0

4 years ago