What is communities and what is predator-prey relationships ?

1 answer:

8 0

Communities is all the populations living in an ecosystem at the same time. A predator-prey relationship is an organism that eats another organism.

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g If a small amount of a strong acid is added to a buffer made up of a weak acid, HA, and the sodium salt of its conjugate base,

ikadub [295]

Answer:

Explanation is in the answer

Explanation:

The pH of the buffer solution does not change appreciably because the strong acid (free H⁺) reacts with conjugate base of buffer producing more weak acid. pH formula of buffers is (Henderson-Hasselbalch formula):

pH = pKa + log ( [A⁻] / [HA] )

The addition of strong acid decreases [A⁻] increasing [HA]. pH change just in the log of the ratio of [A⁻] with [HA], that is a real little effect over pH of the buffer solution.

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2 years ago

Which is an example of mechanical weathering?

d1i1m1o1n [39]

Answer:

Explanation:

mechanical weathering is the breaking down of a larger rock into smaller ones. A and B are chemical weathering and C is irrelevant.

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2 years ago

Which of the following is an aldehyde?

balu736 [363]

Answer: $CH_3CH_2CH_2CHO$ has aldehyde functional group.