A drug user who has developed a high tolerance to a drug could take an overdose large enough to cause death.

1 answer:

4 0

If you're wanting to know true or false, then yes they can.

When they develop a tolerance for it, they don't get the same effects as the did before the tolerance, so then they'd take more of it to get those effects back. If they keep having to increase the amount, they eventually take too much, overdose, and in a lot of cases, die.

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How many moles are in 7.6 g of Ca

klasskru [66]

Your answer would be 0.024951344877489 but rounding it would be 0.025 moles

7 0

3 years ago

A plant extract can be obtained with organic solvents such as acetone or ethyl alcohol, and is composed of plant pigments such a

prohojiy [21]

Answer:

Here's what I get

Explanation:

A plant extract is a mixture because it contains different substances: acetone or ethanol, chlorophylls A and B, carotene and xanthophylls.

It is homogeneous because it is a solution. There is only one phase: the liquid phase. You cannot see the pigments as separate phases.

You can separate the pigments by paper, thin layer, or column chromatography.

Many schools use paper chromatography, because paper is cheap.

As the mixture of pigments follows the solvent up the paper, they separate into different coloured bands according to their attractive forces to the cellulose in the paper.

The chlorophylls are strongly attracted to the paper, so they don't travel very far.

The nonpolar carotene molecules have little attraction to the polar cellulose, so they are carried along by the solvent front.