Chemistry, 13.10.2019 20:10 katherinegvz
Select the correct answer
when phillip analyzed an unknown substance x, he found that it contained only one kind of atom. phillip was unable to convert the substance to
a simpler one. what is substance x?
oa. a compound
ob. an element
c. a heterogeneous mixture
od. a homogeneous mixture
Answers: 1
Chemistry, 22.06.2019 08:30
What method(s) do plants use to obtain nitrogen? select all that apply. absorb it from the atmosphere use bacteria to convert nitrogen to usable form obtain usable nitrogen compounds from the soil absorb nitrogen from water taken in at the roots
Answers: 3
Chemistry, 22.06.2019 14:30
Select the word from the list that best fits the definition the nuclear family into which a person is born or adopted.
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
Chemistry, 22.06.2019 21:20
If a simple machine aduces the strength of a force, what must be increased? the speed of the input force the work the simple machine performs the size of the simple machine the distance over which the force is applied
Answers: 1
Select the correct answer
when phillip analyzed an unknown substance x, he found that it contai...
when phillip analyzed an unknown substance x, he found that it contai...
History, 03.12.2020 20:40
English, 03.12.2020 20:40
Social Studies, 03.12.2020 20:40
Mathematics, 03.12.2020 20:40
Mathematics, 03.12.2020 20:40
Mathematics, 03.12.2020 20:40
Biology, 03.12.2020 20:40
History, 03.12.2020 20:40
Mathematics, 03.12.2020 20:40
History, 03.12.2020 20:40