Question

1. Calculate the difference in energy between the second and third lines in the Paschen series...

1. Calculate the difference in energy between the second and third lines in the Paschen series ofhydrogen’s emission spectrum.

2. The half-life of americium-243 is7.37×103years. If there were5.555×1024atoms of americi-um-243 on earth at year zero(0BCE=0CE,or0BC=0ADifyouprefer), how many are lefttoday?

3.Calculate the approximate density of the unstable americium-243 nucleus.

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Calculate the energy and wavelength of the second line in the Lyman series. What are the...
Calculate the energy and wavelength of the second line in the Lyman series. What are the values of n for the levels the electron is jumping between? Calculate the energy and wavelength of the first line in the Balmer series. What are the values of n for the levels the electron is jumping between? For the first line of the Paschen series, what are the initial and final energy levels?
1. Calculate [Ag+] for the following electrochemical cell if Ecell = 0.67 V Pt | H2(g),...
1. Calculate [Ag+] for the following electrochemical cell if Ecell = 0.67 V Pt | H2(g), (1.00 atm), H+ (1.00 M) || Ag+ (? M) | Ag 2. How many grams of cadmium are deposited from an aqueous solution of CdSO4 when an electrical current of 1.15 A flows through the solution for 312 minutes? 3. Write equations for the following nuclear reactions a) The radioactive decay of nickel-63 by beta emission. b) The radioactive decay of polonium-207 by alpha...
QUESTION 1 The term "Slip" indicates the difference between the motor's synchronous speed and the no-load...
QUESTION 1 The term "Slip" indicates the difference between the motor's synchronous speed and the no-load speed True False 1 points    QUESTION 2 Wet Bulb (WB) Temperature: is for the temperature reading form an ordinary mercury bulb thermometer or regular temperature sensor. True False 1 points    QUESTION 3 The refrigerant (R-134a) is the new replacement of the refrigerant (R-22) as it is less harmful to the environment. True False 1 points    QUESTION 4 Draft Gauge and Bourdon...
Question 1 Science affecting our daily lives is exemplified by: relying on hunches to solve crimes....
Question 1 Science affecting our daily lives is exemplified by: relying on hunches to solve crimes. using DNA evidence in criminal investigations. seeking the help of people with psychic visions in police work. relying entirely on preconceptions to identify people who may have committed crimes. 4 points Question 2 When an object’s velocity changes, which of the following must have occurred? A unbalanced force acted on the object. An balanced force acted on the object. The object started to deviate...
1/ Alpha Centauri A is a star that is remarkably like our Sun...indeed, we can think...
1/ Alpha Centauri A is a star that is remarkably like our Sun...indeed, we can think of it as the Sun’s stellar twin. Alpha Centauri A lies at a distence of 4.4 light-years from Earth, and it has a luminosity of 5.88 x 10^26 W. Calculate the apparent brightness of Alpha Centauri A Suppose you have a light bulb that emits 100 W of visible light. How far away from you would you need to put that light bulb in...
1) Describe an example of each of the following that may be found of your kitchen:...
1) Describe an example of each of the following that may be found of your kitchen: Explain how your choice falls into this category, and if there is a chemical name or symbol for it, provide that as well. Provide a photo of your example with your ID card in it. a) a compound b) a heterogeneous mixture c) an element (symbol) Moving to the Caves… Lechuguilla Caves specifically. Check out this picture of crystals of gypsum left behind in...
MATHEMATICS 1. The measure of location which is the most likely to be influenced by extreme...
MATHEMATICS 1. The measure of location which is the most likely to be influenced by extreme values in the data set is the a. range b. median c. mode d. mean 2. If two events are independent, then a. they must be mutually exclusive b. the sum of their probabilities must be equal to one c. their intersection must be zero d. None of these alternatives is correct. any value between 0 to 1 3. Two events, A and B,...
provide 3-4 paragraphs post (team 2) 1-What are 4 key things you learned about the topic...
provide 3-4 paragraphs post (team 2) 1-What are 4 key things you learned about the topic from reading their paper? 2-How does the topic relate to you and your current or past job? 3-Critique the paper in terms of the organization and quality.1- Employee Stress and how it has an Adverse Effect on a Company This paper explores employee stress and how it has an adverse effect on a company, its employees and the organization. Job stress can have a...
In February 2012, the Pepsi Next product was launched into the US market. This case study...
In February 2012, the Pepsi Next product was launched into the US market. This case study provides students with an interesting insight into PepsiCo’s new product process and some of the challenging decisions that they faced along the way. Pepsi Next Case Study Introduction Pepsi Next was launched by PepsiCo into the US market in February 2012, and has since been rolled out to various international markets (for instance, it was launched in Australia in September 2012). The new product...
Please answer the following Case analysis questions 1-How is New Balance performing compared to its primary...
Please answer the following Case analysis questions 1-How is New Balance performing compared to its primary rivals? How will the acquisition of Reebok by Adidas impact the structure of the athletic shoe industry? Is this likely to be favorable or unfavorable for New Balance? 2- What issues does New Balance management need to address? 3-What recommendations would you make to New Balance Management? What does New Balance need to do to continue to be successful? Should management continue to invest...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT