In this lesson, you learned about compounds and how they are different from elements.
in...
Answers: 1
Chemistry, 22.06.2019 19:20
For a research project, a student decided to test the effect of the lead(ii) ion (pb2+) on the ability of salmon eggs to hatch. this ion was obtainable from the water‐soluble salt, lead(ii) nitrate, which the student decided to make by the following reaction. pbo(s) + 2 hno3(aq) → pb(no3)2(aq) + h2o losses of product for various reasons were expected, and a yield of 86.0% was expected. in order to have 5.00 g of product at this yield, how many grams of pbo should be reacted? (assume that sufficient nitric acid, hno3, would be used.)
Answers: 1
Chemistry, 22.06.2019 22:30
Consider a culture medium on which only gram-positive organisms such as staphylococcus aureus colonies can grow due to an elevated nacl level. a yellow halo surrounds the growth, indicating the bacterium fermented a sugar in the medium, decreasing the ph as a result and changing the color of a ph indicator chemical. this type of medium would be referred to as a differential and enrichment culture.
Answers: 2
Chemistry, 23.06.2019 07:40
Did the detergents containing enzymes work better at removing stains than those containing no enzyme? why or why not?
Answers: 2
Chemistry, 23.06.2019 08:30
Kelly has come up with an explanation for why her sister is sometimes in a good mood and other times in a bad mood. she speculates that it is based on the hours of sleep her sister got the previous night. this explanation for her sister's behaviors is an example of a(n)
Answers: 3
History, 26.06.2019 19:30
Mathematics, 26.06.2019 19:30
Mathematics, 26.06.2019 19:30
Mathematics, 26.06.2019 19:30
Mathematics, 26.06.2019 19:30
Computers and Technology, 26.06.2019 19:30
Mathematics, 26.06.2019 19:30
Mathematics, 26.06.2019 19:30
Mathematics, 26.06.2019 19:30
Mathematics, 26.06.2019 19:30
Mathematics, 26.06.2019 19:30
History, 26.06.2019 19:30
History, 26.06.2019 19:30
Mathematics, 26.06.2019 19:30
Business, 26.06.2019 19:30