Posts by Aleksandra
Total # Posts: 7
Which of the following statements about isotopes is/are true? a. Because isotopes have different numbers of neutrons, they have different mass numbers. b. because neutrons determine an atom's chemical properties, isotopes of the same element are very different. C. isotopes...
September 2, 2015
my professor want's us to write an abstract proposal on our reserch topic " Is our food safe to eat?" BUT we did not write our papers yet,so can someone help me how to set it up
April 14, 2013
We have six digits and we know that ten digit is his favorite and also that (hundred thousand digit + thousand digit) is also his favorite number, so: 2 3 4 5 6 7 would work because 2(100,000 digit)+ 4(thousand digit)=6 and we know that this sum is his favorite number; and 6(...
February 15, 2013