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brilliants [131]
3 years ago
15

Which statement best reflects a change in climate?

Chemistry
1 answer:
zalisa [80]3 years ago
6 0

Answer:

droughts in California have become more common in California

Explanation:

Climate is weather over time which means that the first and the third one are just isolated incidents and the last answer choice shows climate but it doesn't show a change in climate

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Why is it that the higher the molecular mass of the alkane, the higher the boiling point? Refer to intermolecuar forces and ener
AnnZ [28]

Answer:

Higher melting and boiling points signify stronger noncovalent intermolecular forces. Consider the boiling points of increasingly larger hydrocarbons. More carbons means a greater surface area possible for hydrophobic interaction, and thus higher boiling points.

3 0
3 years ago
Express using two significant figures 2.5ft
ValentinkaMS [17]

Answer: 2.5 feet is already in 2 sig figs, in inches it would be 30. (30 including the deciaml) and in cm it would be 76

Explanation:

4 0
2 years ago
If the temperature changes in a chemical reaction, what has occurred?
bazaltina [42]

Answer:

Energy was transferred

Explanation:

If the temperature changed, energy must have been added or lost, but not created. Energy can't be created or destroyed.

3 0
3 years ago
Nitrogen:0.781 oxygen:0.209 argon: 0.010 (Mole fraction)
horrorfan [7]

Answer:

The partial pressure of nitrogen is 597.5 torr

Explanation:

Step 1: Data given

Mol fraction of N = 0.781

Mol fraction of O = 0.209

Mol fraction Ar = 0.010

Atmospheric pressure = 765.0 torr

The partial pressure is given by  Pi = Xi * Pt

⇒ χ i  =  the mole fraction of gas  i  in the mixture

⇒ P total  = the total pressure of the mixture

Step 2: Calculate the partial pressure of nitrogen

P(N) = mol fraction of N * atmospheric pressure

P(N) = 0.781 * 765.0 torr = 597.5 torr

The partial pressure of nitrogen is 597.5 torr

8 0
4 years ago
Many kinds of animals eat blackberries. Which of the following will most likely happen to the seeds of a blackberry plant after
faltersainse [42]

Answer:

The seed of the blackberry will be released in the faeces of the organisms. The seed of the blackberries will be distributed to different locations. When the seed will be dropped to a favourable location, the seed will germinate and a plant will grow from it. In this way, seeds are able to be dispersed at more favourable locations via animal sources. Hence, they will have better chances of growing in different areas.

7 0
4 years ago
Read 2 more answers
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