1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
igomit [66]
4 years ago
11

For an atom’s electrons, how many energy sublevels are present in the principal energy level n = 4?

Chemistry
1 answer:
Masja [62]4 years ago
8 0
 <span>s, p, d, and f are possible for n=4. 
number of possible sublevels = n 

Hope I helped</span>
You might be interested in
What defines an element?
Troyanec [42]

element is made up of only one type of atoms.

it is pure form of matter

example hydrogen, oxygen, carbon etc

7 0
3 years ago
Read 2 more answers
A chemistry student weighs out of lactic acid into a volumetric flask and dilutes to the mark with distilled water. He plans to
34kurt

Answer:

28.0mL of the 0.0500M NaOH solution

Explanation:

<em>0.126g of lactic acid diluted to 250mL. Titrated with 0.0500M NaOH solution.</em>

<em />

The reaction of lactic acid, H₃C-CH(OH)-COOH (Molar mass: 90.08g/mol) with NaOH is:

H₃C-CH(OH)-COOH + NaOH → H₃C-CH(OH)-COO⁻ + Na⁺ + H₂O

<em>Where 1 mole of the acid reacts per mole of the base.</em>

<em />

You must know the student will reach equivalence point when moles of lactic acid = moles NaOH.

the student will titrate the 0.126g of H₃C-CH(OH)-COOH. In moles (Using molar mass) are:

0.126g ₓ (1mol / 90.08g) = <em>1.40x10⁻³ moles of H₃C-CH(OH)-COOH</em>

To reach equivalence point, the student must add 1.40x10⁻³ moles of NaOH. These moles comes from:

1.40x10⁻³ moles of NaOH ₓ (1L / 0.0500moles NaOH) = 0.0280L of the 0.0500M NaOH =

<h3>28.0mL of the 0.0500M NaOH solution</h3>
8 0
3 years ago
Suppose that the microwave radiation has a wavelength of 12.4 cm . How many photons are required to heat 255 mL of coffee from 2
vivado [14]

Answer:

Explanation:

wavelength λ = 12.4 x 10⁻² m .

energy of one photon = h c / λ

= 6.6 x 10⁻³⁴ x 3 x 10⁸ /  12.4 x 10⁻²

= 1.6 x 10⁻²⁴ J .

Let density of coffee be equal to density of water .

mass of coffee = 255 x 1 = 255 g

heat required to heat up coffee = mass x specific heat x rise in temp

= 255 x 4.18 x ( 62-25 )

= 39438.3 J  .

No of photons required = heat energy required / energy of one photon

= 39438.3 / 1.6 x 10⁻²⁴

= 24649 x 10²⁴

= 24.65 x 10²⁷ .

5 0
3 years ago
The process by which nitrogen gas is converted to a usable form is called nitrogen
LenaWriter [7]

Answer: i beleive it is fixation in edge 2020

Explanation:

4 0
3 years ago
Read 2 more answers
Cl is highly reactive. We know NaCl to
love history [14]
I think the answer to that is B
8 0
3 years ago
Other questions:
  • At what temp will a gas be at if you allow it to expand from an original 456 mL to 65°C to 3.4 L
    11·2 answers
  • Can a liquid substance diffuse in another liquid substance
    7·1 answer
  • Refer to a periodic table and tell how many helium atoms (He) would be needed to
    14·1 answer
  • What happens during the entire fusion process in the Sun?
    6·1 answer
  • Johnny was finished with his
    7·1 answer
  • An alloy is a mixture that has A.Parts that do not settle B.A part that is metal C.Parts you can serprate D.Parts that will sett
    8·1 answer
  • For the balanced equation shown below, how many grams of CoHS reacted, if 56.5 grams of H20 are produced?
    11·1 answer
  • Some examples of physical properties(something I can test for that doesn’t change what the substance is)are
    7·1 answer
  • How many molecules of CH4 are in 24.1 g of this compound?
    7·1 answer
  • What is the daughter nucleus produced when zn63 undergoes electron capture? replace each question mark with the appropriate inte
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!