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Consider an electron in the n = 4 energy level of a hydrogen atom. (a) What is the energy of the n = 4 energy level? (Give your answer to three significant figures.) (a) -13.6 eV (b) -3.4 eV (c) -1.51
answered
Dec 8, 2024
Physics
high-school
0
votes
203k
views
What is the molar mass of a carbon and oxygen molecule whose density is 6.02 g/L at STP?
answered
Jun 18, 2024
Chemistry
college
1
vote
134k
views
How many colors can be used at the same time in each of the applications: - Adobe Photoshop - Adobe Illustrator - Adobe InDesign
answered
Jun 1, 2024
Computers and Technology
college
3
votes
219k
views
You are working in a research lab on an oxidation-reduction pathway of a previously unknown organism that involves a number of electron carriers. You have isolated and studied the individual carriers,
answered
Apr 19, 2024
Chemistry
high-school
3
votes
197k
views
If an object lies below the horizontal plane and behind the vertical plane, what is its location? A. 2nd Quadrant B. 1st Quadrant C. 4th Quadrant D. 3rd Quadrant E. on the reference line
answered
Feb 24, 2024
Mathematics
college
4
votes
59.8k
views
What does Charterism mean
answered
Nov 12, 2023
History
college
2
votes
63.0k
views
Can somebody please help with Khan Academy? Thx :)
answered
Oct 21, 2023
Mathematics
college
4
votes
113k
views
A pendulum has 100 Joules of total mechanical energy. If 50 Joules are potential energy, how many Joules of kinetic energy must there be?
answered
Mar 25, 2023
Chemistry
high-school
3
votes
20.5k
views
Three postal workers can sort a stack of mail 10 minutes , 35 minutes, and 70 minutes respectively. find how long it takes them to sort the mail if all three work together
answered
Nov 22, 2022
Mathematics
college
2
votes
20.3k
views
In which type of government is power divided between a central government and several local governments?
answered
Nov 14, 2022
History
high-school
3
votes
43.4k
views
8 less than four times a number is 12 determine the number
answered
Jun 14, 2022
Mathematics
high-school
2
votes
206k
views
Which has more mass, one mole of carbon (C) or one mole of copper (Cu)? Explain.
answered
May 2, 2022
Chemistry
high-school
8
votes
70.4k
views
A word that refers to the sequence of who will become the president if something happens
answered
Apr 15, 2022
Social Studies
high-school
8
votes
104k
views
Identify each description as direct or indirect imperial control
answered
Mar 11, 2022
History
high-school
4
votes
127k
views
Please help!! Find an equation in point-slope form that passes through the points (-1, 3) and (1. 7). SHOW ALL YOUR WORK!
answered
Dec 20, 2021
Mathematics
middle-school
5
votes
210k
views
The next best option given up when individuals or firms choose something else is called a(n) _____. A. trade B. regret C. opportunity cost D. increased expense
answered
Dec 15, 2021
History
high-school
1
vote
197k
views
Which of the following characteristics are typical of brachiopods? A. Lophophore between the shells B. Two calcified valves: dorsal and ventral C. Two lateral calcified shells D. Zoecium attached to rocks
answered
Aug 18, 2021
Biology
high-school
5
votes
157k
views
Judy just calculated the standard deviation for a project she is working on. The value for the standard deviation is a small number. What does this represent? The data is spread far from the mean. The
answered
Aug 2, 2021
Mathematics
high-school
5
votes
123k
views
Hadley has a beach ball with a diameter of 16 in. What is the volume of this beach ball? Use 3.14 for π. Round to the nearest whole number.
answered
Jul 14, 2021
Mathematics
middle-school
5
votes
10.1k
views
Find The Missing Measurement A) 11.5 B) 9.5 C) 9 D) 9.7
answered
Jul 14, 2021
Mathematics
middle-school
6
votes
124k
views
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