Answers: 2
Chemistry, 21.06.2019 18:30
Asample of the male sex hormone testosterone, c19h28o2, contains 3.88×10^21 atoms of hydrogen.(a) how many atoms of carbon does it contain? (b) how many molecules of testosterone does it contain? (c) how many moles of testosterone does it contain? (d) what is the mass of this sample in grams?
Answers: 1
Chemistry, 22.06.2019 05:30
Arecipe calls for 1.2 cups of oil. how many liters of oil is this?
Answers: 2
Chemistry, 22.06.2019 14:00
What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?
Answers: 2
Chemistry, 22.06.2019 20:00
Phosphoric acid is a triprotic acid ( =6.9×10−3 , =6.2×10−8 , and =4.8×10−13 ). to find the ph of a buffer composed of h2po−4(aq) and hpo2−4(aq) , which p value should be used in the henderson–hasselbalch equation? p k a1 = 2.16 p k a2 = 7.21 p k a3 = 12.32 calculate the ph of a buffer solution obtained by dissolving 18.0 18.0 g of kh2po4(s) kh 2 po 4 ( s ) and 33.0 33.0 g of na2hpo4(s) na 2 hpo 4 ( s ) in water and then diluting to 1.00 l.
Answers: 3
Sodium and oxygen ionic bond diagram...
Mathematics, 12.06.2021 21:40
Health, 12.06.2021 21:40
Mathematics, 12.06.2021 21:40
Social Studies, 12.06.2021 21:40
Health, 12.06.2021 21:40
Mathematics, 12.06.2021 21:40
Physics, 12.06.2021 21:40