What might cause average global surface temperature to rise and fall from year to year

1 answer:

4 0

The most likely explanation for the lack of significant warming at the Earth's surface in the past decade or so is that natural climate cycles caused shift.

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What is the general formula for the homologous series that includes ethene?

Masja [62]

Answer:

See below

Explanation:

The common formula of the same alkene series is CnH2n, where n is the quantity of atoms of carbon. Owing to the hydrocarbons of alkenes with at least one double carbon relation, the alkene-like sequence starts with ethen C2H4.

Hope this helps.

8 0

4 years ago

A student was given two clear liquids; a colorless liquid and a dark-blue liquid. The student was asked to combine the liquids i

Anon25 [30]

Answer:

The correct option is;

a) The resulting mixture was cloudy

Explanation:

Here we have the initial color as

1. Colorless and

2. Dark blue

We analyze each of the results as follows

a) The resulting mixture was cloudy

A cloudy mixture forming when the two liquids are mixed is most likely due to the formation of a suspension from a new substance That is a new compound is formed

b) The total volume of the mixture was equal to the sum of the initial volumes.

Here since there is no change in the physical properties as the volume of the mixture is the sum of the volumes of the constituent then there is unlikely to be a chemical change

c) The resulting liquid was light blue

Here, the observation is more of a physical change

d) The liquids formed two separate layers in the beaker.

This is an indication that there was no mixing of the liquids hence no reaction or chemical change.

7 0

3 years ago

The world's total petroleum reserve is estimated at 2.0 x 10^22 joules La joule (J) is the unit of energy where 1J =1kg m^2/s^2)

mamaluj [8]

Answer:

It will take $1.1\times 10^{2}years$ to exhaust the supply

Explanation:

We have to apply unitary method to solve this problem.

Divide total petroleum reserve by petroleum consumption in each year to calculate estimated time.

Presently, $1.8\times 10^{20}$ joules of petroleum are being consumed per year.

Hence, applying unitary method, $2.0\times 10^{22}$ joules of petroleum can be consumed in $\frac{2.0\times 10^{22}}{1.8\times 10^{20}}years=1.1\times 10^{2}years$