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3 years ago

How many electrons can occupy the s orbitals at each energy level?

1 answer:

6 0

The atomic orbital is describes using the principle quantum number followed by a letter (s, p, d or f) that describe the sublevel.

For sublevel, it has the shape of a spherical electron cloud surrounding the nucleus and it can hold up to two electrons.

Therefore, the answer to your question is 2 electrons.

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Please help with these two (last question is nwse)

Vlad1618 [11]

Answer:

your answer gonna be 20 miles

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2 years ago

Which substance has a mass is 13.5 grams, and its volume is 5 cm 3.

solmaris [256]

Answer:

Substance is Aluminium

Explanation:

We are given;

Mass; m = 13.5 grams

Volume; V = 5 cm³

Formula for density is;

density = m/V

Density = 13.5/5

Density = 2.7 g/cm³

From the table attached, we can see that the element with a corresponding density of 2.7 is Aluminium

5 0

3 years ago

9- Which pair of formulae represents two alkanes? (1 mark)

Ksenya-84 [330]

Answer:

A) CH4 and C8H18

Explanation:

General Formula for an Alkane = CnH2n+2

This means for every number of Carbon (C) atoms, there are twice as many Hydrogen (H) atoms with an additional two added onto that.

Therefore, if there is one Carbon Atom, and we multiply that by two, and then add an additional two, we get 4 Hydrogen atoms, so CH4, which is our first Formulae

Secondly, if we have eight Carbon Atoms, and we multiple that by two (16), and then add an additional two, we get 18 Hydrogen atoms, so C8H18, which is our second Formulae

The other Formulas do not follow this 'General Formula'

8 0

2 years ago

If you are supposed to put in 2/4 a cup sugar for a recipe, can you just put in a half cup of sugar?

natta225 [31]

I would assume so.

Given $\frac{2}{4}$ , we can simplify the fraction to $\frac{1}{2}$

Both would obtain the same proportions, so I don't see why putting a half cup of sugar would make things any different.

Hope this is the answer you are looking for.

8 0

2 years ago

Read 2 more answers

If a piece of matter changes shape, how does its mass change?

kap26 [50]

The law of conservation of mass states that matter cannot be created nor destroyed the answer would be D. It remains the same

5 0

3 years ago