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
allochka39001 [22]
3 years ago
5

Question 9 of 10

Chemistry
2 answers:
Tomtit [17]3 years ago
6 0

Answer:

3 is the minimum of energy level that contains dorbitals

mars1129 [50]3 years ago
5 0

Answer:

A 3

Because d is 3rd orbital it is present in third shell

Explanation:

You might be interested in
Visible light has an average wavelength of 550 nm. How much energy would be in this wavelength of light? 5 x 10-19​
beks73 [17]

Answer:

E = 3.6×10⁻¹⁹ J

Explanation:

Given data:

Wavelength = 550 nm  (550 ×10⁻⁹ nm)

Energy of wave = ?

Solution:

Formula:

E = h c/λ

c = 3×10⁸ m/s

h = 6.63×10⁻³⁴ Js

Now we will put the values in formula.

E = 6.63×10⁻³⁴ Js × 3×10⁸ m/s /550 ×10⁻⁹ nm

E = 19.89×10⁻²⁶ J.m /550 ×10⁻⁹ nm

E = 0.036×10⁻¹⁷ J

E = 3.6×10⁻¹⁹ J

3 0
2 years ago
The pH of an aqueous solution of hydrochloric acid is 2. What is the pH of the solution after the addition of 10 g of sodium chl
ololo11 [35]

Answer:

wala ako alam sagot sorry

6 0
3 years ago
What is the second most abundant element in stars? A. helium B. iron C. hydrogen D. oxygen
devlian [24]
<span>The </span>abundance of a chemical element<span> is a measure of the </span>occurrence<span> of the </span>element<span> relative to all other elements in a given environment. Abundance is measured in one of three ways: by the </span>mass-fraction<span> (the same as weight fraction); by the </span>mole-fraction<span> (fraction of atoms by numerical count, or sometimes fraction of molecules in gases); or by the </span>volume-fraction<span>. Volume-fraction is a common abundance measure in mixed gases such as planetary atmospheres, and is similar in value to molecular mole-fraction for gas mixtures at relatively low densities and pressures, and </span>ideal gas<span> mixtures. Most abundance values in this article are given as mass-fractions.

</span>
8 0
3 years ago
PLEASE HELP!<br><br> Count the total number of atoms in H 2 O:<br><br> 2<br> 3<br> 4<br> 5<br> 6
Darya [45]
3
two hydrogen and 1 oxygen
8 0
3 years ago
Read 2 more answers
The reaction where heat is added is called? removed?
Harrizon [31]
Endothermic<span> Reaction??? </span>
4 0
3 years ago
Other questions:
  • What is needed in order to determine a mole ratio?
    14·1 answer
  • Calculate the mass of hydrogen formed when 27 g of aluminum reacts with excess hydrochloric acid according to the balanced equat
    11·1 answer
  • The speed of light in a vacuum is constant. If the frequency of a light wave increases, what happens to the wavelength of the li
    8·1 answer
  • The student is now told that the four solids, in no particular order, are calcium bromide (CaBr2), sugar (C6H12O6), benzoic acid
    7·2 answers
  • What volume of oxygen gas at 20°C and 0.919 atm is
    6·1 answer
  • A lahar is a type of mudflow that occurs
    8·1 answer
  • PLEASE HELP!!!! Will give 60 points, and mark brainlest! Correct answer and explanation PLEASE!!!
    5·1 answer
  • When you boil a pot of liquid water, the water turns to steam and rises in the air. This is an example of what.
    11·2 answers
  • If 36.5 m of a gas are collected at a pressure of 755 mm Hg, what volume will the gas
    5·1 answer
  • CaCl2 (s) + 2 H2O → Ca(OH)2 (aq) + 2 HCl (g) When Addie added CaCl2 to the water in her flask, she noted that the flask heated u
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!