2. what is the change in the atomic number when an atom emits an alpha particle? (1 point)
de...
Chemistry, 11.10.2019 19:00 Fireburntbudder
2. what is the change in the atomic number when an atom emits an alpha particle? (1 point)
decreased by 2
decreases by 1
increases by 1
increases by 2
Answers: 2
Chemistry, 21.06.2019 23:30
Calculate the expected ph values of the buffer systems from the experiments (a,b,c,d), using the henderson- hasselbalch equation, ph-pka+log[a-]/[ha]. use for pka values carbonic acid= 6.37, and acetic acid= 4.75.
Answers: 2
Chemistry, 22.06.2019 07:30
The scheme below is from a series of reactions that are part of a synthesis of vitamin a. answer the following questions with reference to this scheme. (i) what is "reagent a"? (ii) draw a step-by-step mechanism which explains the formation of compound c from compound b (iii) which reagents would you use to form compound e from compounds c and d (reagents b and c)? for each reagent suggested above in (ii) explain the role of the reagent in the reaction to (iv) form compound e. you may wish to do this by drawing a mechanism. 1. addition of reagent a но reagent a 2. н,о" thо oh нон-с compound a. compound b. compound c .ch-оh 1. reagent b "сно 2. reagent c сh oh compound e. compound d.
Answers: 2
Chemistry, 22.06.2019 10:30
Rocks, as they are compressed, begin forming mountains above the earth's surface when two continental plates converge. the continental crust increases in depth as the mountains grow above. the himalayan mountains formed at a convergent plate boundary in this manner. the rocks are smashed together causing them to due to the intense heat and pressure from the colliding plates and eventually forming rock. a) melt; igneous b) layer; sedimentary c) recrystallize; metamorphic d) melt into the earth's interior; metamorphic
Answers: 1
Chemistry, 22.06.2019 17:00
In a heat engine of 1000 j of heat enters the system and the piston does 500 j of work what is the final internal energy of the system if the inital energy was 2000 j we have to do all of these down here 1)write the equation 2)list out your know variables 3)plug the numbers into the equations 4)solve 5)write your solution statemtn that includes inital energuy and final energuy added
Answers: 1
Health, 12.11.2020 22:30
Mathematics, 12.11.2020 22:30
Mathematics, 12.11.2020 22:30
Mathematics, 12.11.2020 22:30
Social Studies, 12.11.2020 22:30
Mathematics, 12.11.2020 22:30
English, 12.11.2020 22:30
Mathematics, 12.11.2020 22:30
Mathematics, 12.11.2020 22:30
Mathematics, 12.11.2020 22:30
Advanced Placement (AP), 12.11.2020 22:30
Mathematics, 12.11.2020 22:30