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3 years ago

Which of the following are advantages of the SI system?

Chemistry

2 answers:

Grace [21]3 years ago

8 0

A) It is easy to change from one unit to another that is one advantage of the SI system.

Anuta_ua [19.1K]3 years ago

6 0

Answer:

it is easy to change...

it allows scientists...

Explanation:

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11. What is the maximum number of electrons that an atomic orbital can contain?

Arada [10]

Answer:

Explanation:

Each orbital can hold two electrons. One spin-up and one spin-down.

6 0

3 years ago

For a hydrogen atom, which electronic transition would result in the emission of a photon with the highest energy? for a hydroge

vagabundo [1.1K]

The transitions which fall to the lowest principle position release the greatest energies. In this case, this would be the transition from the 5p to the 3s orbital (a Paschen transition).

Hope this helps!

6 0

3 years ago

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A forest is cut down to make room for a housing development. Which population is most likely to survive? A. raccoons, which can

Basile [38]

A. Raccoons. They will be able to survive in a housing area just as well, or even better then they had in the forrest.

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5 0

3 years ago

What mass of O2, in grams, is required to completely react with 0.025 g C3H8?

8090 [49]

2C3H8+ 702--->6CO2+8H20
FROM Equation above 2 moles of C3H8 reacted with 7 moles of oxygen to form 6 moles of c02 plus 8 molesof H2O
the moles of c3H8 reacted is = MASS/ R.F.M
THE R.F.M =48+8=44
Number of moles is hence 0.025/44=5.68x10^-4
since ratio of C3H8 to O2 is 2:7 Therefore moles of O2 reacted is 1.989 x10^-3
mass= r.f.m x number of moles
(1.989x10^-3) x 32 =0.064g

6 0

3 years ago

A drum used to transport crude oil has a volume of 162 L. How many grams of water, as steam, are required to fill the drum at 1.

Paraphin [41]

Answer:

114.48g

Explanation:

Step 1:

Data obtained from the question:

Volume (V) = 162 L

Pressure (P) = 1.20 atm

Temperature = 100°C = 100°C+ 273 = 373K

Number of mole (n) of H2O =?

Recall:

Gas constant (R) = 0.082atm.L/Kmol

Step 2:

Determination of the number of mole of H2O i.e steam.

Using the ideal gas equation, the number of mole of H2O can be obtained as follow:

PV = nRT

1.2x 162 = n x 0.082 x 373

Divide both side by 0.082 x 373

n = (1.2x 162) /(0.082 x 373)

n = 6.36 moles

Step 3:

Determination of mass of H2O i.e steam:

This is illustrated below:

Molar Mass of H2O = (2x1) + 16 = 2 + 16 = 18g/mol

Number of mole H2O = 6.36 moles

Mass of H2O =?

Mass = number of mole x molar Mass

Mass of H2O = 6.36 x 18

Mass of H2O = 114.48g

Therefore, the mass of H2O i.e steam required to fill the drum of crude oil is 114.48g

7 0

3 years ago