Answers by Diane M
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Answers by Diane M

Answers by Diane M
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the half-life of strontium-90 is approximately 29 years. how much of a 500 g sample of strontium-90 will remain after 58 years​
answered Dec 7, 2020
5 votes
63.0k views
In what ways do the development patterns of adult men and women appear to be merging
answered Apr 19, 2020
5 votes
88.9k views
The concentration of carbon monoxide in a sample of air is 8.1×10−6. There are ________ molecules of co in 1.00 l of this air at 755 torr and 23 ∘c.
answered Feb 29, 2020
5 votes
181k views
Beaded key chains originally priced at $0.61 are now on sale for $0.19. What is the discount percentage
answered Nov 20, 2019
4 votes
133k views
Please help ASAP!! I need help
answered Oct 9, 2019
4 votes
120k views
What is the role of a pioneer species in primary succession
answered May 23, 2019
2 votes
163k views
An itinerant (or traveling) teacher would be most likely to provide help for a student with
answered May 12, 2019
5 votes
134k views
Section 10-2 cell division
answered Mar 20, 2019
5 votes
178k views
In order for a thermonuclear fusion reaction of two deuterons (21h+) to occur, the deuterons must collide each with a velocity of about 1×106m/s. what is the wavelength?
answered Mar 17, 2019
4 votes
23.2k views
What is the correct answer
answered Nov 29, 2018
3 votes
233k views
Which of these contributed to the Crash of 1929 and the Great Depression?
answered Aug 16, 2018
4 votes
205k views
Which statement best defines childbirth A.) The joining of an egg and a sperm B.) The period of about 40 weeks when developing embryo or fetus is in the uterus C.) The process and see year's contract to
answered Aug 9, 2018
5 votes
127k views
Which of the following is the primary benefit of the federal government investing in physical capital?
answered Jul 24, 2018
3 votes
55.9k views
Hey cane someone please help me on this its a 10pt question
answered Jul 14, 2018
4 votes
175k views
What are some quotes that state Chris McCandless isn't admirable in "Into the Wild"?
answered Mar 21, 2018
4 votes
47.5k views
What is the least common denominator of the four fractions listed below 20 7/10, 20 3/4, 18 9/10, 20 18/25
answered Jun 4, 2017
6 votes
114k views
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