Chemistry, 15.10.2019 22:10 Llamacornbabe
Ethe table below for the next three questions.
ion symbol atomicnumber massnumber protons neutrons electrons
oxygen o-2 [a.] 16 8 [b.] [c.]
hints:
if an ion has a + charge, that indicates it has more protons (+) than electrons this means the atom has lost electrons.
if an ion has a - charge, that indicates it has more electrons than protons (+). this means the atom has gained electrons.
[a] corresponds to:
a. 2
b. 8
c. 16
d. none of the above
[b] corresponds to:
a. 2
b. 8
c. 16
d, none of the above
[c] corresponds to:
a. 2
b. 6
c. 8
d. 10
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
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Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space
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Chemistry, 22.06.2019 14:30
The valence of aluminum is +3, and the valence of the chlorine is -1. the formula fir the aluminum chloride is correctly written as
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Ethe table below for the next three questions.
ion symbol atomicnumber massnumber proton...
ion symbol atomicnumber massnumber proton...
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