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3 years ago

Which example is not a biomass energy source?

Chemistry

2 answers:

iogann1982 [59]3 years ago

6 0

Answer:

your answer is wind

Explanation:

The type of biomass contains

Garbage, Crops, Gasses, Wood, and Alcohol fuels

meriva3 years ago

5 0

Answer:

the sun

Explanation:

You might be interested in

A compound with molecular formula C6H15N exhibits a singlet at d 0.9 (1H), a triplet at d 1.10 (3H), a singlet at d1.15 (9H), an

LuckyWell [14K]

Answer:

N-ethyl-2-methylpropan-2-amine

Explanation:

In this case, we have to start with the IR info. The signal on 3400 cm^-1 indicates the presence of a hydrogen bonded to the heteroatom. In this case, we have nitrogen in the formula, so we will have the amine group.

On the other hand, we have to analyze the NMR info:

a) We have 2 singlets => This indicates the presence of 2 different hydrogens without neighbors.

b) We have a triplet => This indicates the presence of CH3 bonded to a CH2.

c) We have a quartet => This indicates the presence of CH2 bonded to a CH3.

From b) and c) we can conclude that we have the ethyl group bonded to a nitrogen.

Finally, we have to add 4 more carbons in such a way that we only have a single signal. In this case the ter-butyl group.

In that way, we will have 2 singlets (from the CH3 groups in the ter-butyl and the H on the N). Also, we will have the quartet on the CH2 in the ethyl group and the triplet on the CH3 in the ethyl group

6 0

3 years ago

Match the following family of elements to its group.

docker41 [41]

Explanation:

To solve this problem, we simply use the periodic table of elements which groups elements based on their atomic numbers.

The atomic number of an element is the number of protons it contains. The protons are the positively charged particles within an atom.

The vertical arrangement of elements on the periodic table is the group.
The horizontal arrangement of elements is the period.

Now;

Noble gases belongs to group 18

Alkali earth metals belongs to group 2

Halogens belongs to group 17

Alkali metals belongs to group 1

Transition metals belongs to group 3-12

7 0

3 years ago

Every pure substance has exact and specific density. What are two purposes that a chemist would use a calculated density for.

adell [148]

Answer:

1. Density can be used to identify a substance

2. Density can be used to ascertain whether a substance will float in water.

Explanation:

The calculation of the density of a substance can be used to identify the substance. If the density of a substance is calculated accurately, and compared with a table of standard densities, then we can identify that substance.

Also, density determines whether an object will float or sink in water. If an object is less dense than water then it will float in water. If it is denser than water, then it will sink in water.

7 0

4 years ago

Question 6

crimeas [40]

Answer: There are $10.5\times 10^{23}$ formula units in 1.75 mol sample of NaCl.

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number $6.023\times 10^{23}$ of particles.

1 mole of NaCl contains = $6.023\times 10^{23}$ formula units

Thus 1.75 mol of NaCl contains = $\frac{6.023\times 10^{23}}{1}\times 1.75=10.5\times 10^{23}$ formula units

Thus there are $10.5\times 10^{23}$ formula units in 1.75 mol sample of NaCl.

8 0

3 years ago

What scientist established the law of octaves?

Hoochie [10]

I believe it was John Newlands.

Hope that helped

6 0

3 years ago