
Wittig reagent is prepared by using alkyl halide and PPh3 in
presence of Base.
im doing a lab where i need to synthesize a specific chalcone. ive decided to use...
ive
seen differnt ways of people doing this so im confused. i know
overal it be butene, but where would we start and why? thank
you
12. Name the alkene shown. Be sure to include the appropriate E or Z label nec A appropriate E or Z label necessary. CH,CH,CI Please give your answer here:
For my gen physics ii lab, we are doing an RC circuit lab. I am having a hard time with these questions and i was wondering if someone could help? #1) Does RC have unit of time? #2) When the key is switched from position A to B, the capacitor discharges instantaneously, explain. if someone could help with these questions, id be very thankful!
I need help figuring out the solution to this problem and am unsure where to start. Can you please show all work and steps so I can understand the calculations. 1. Pyridine (C5H5N) is a weak base with a pKb of 8.77. Write the Kb expression for this reaction.
Im having a hard time figuring what Ksp is. I don't know If I
am inputing the numbers wrong or calculating it incorrectly. Please
help and thank you!!
A Student mixed .59 of Solid AB with 25.ML of dis Hiled water and aueused the mixtare to achieve etuiu: brium qecordag the foutouing eguariua The Student ther birkerad the me. The Student took a lo.o ML Samle af the Soiuten and Perhoimed a itration. The concentrathon of the anien was hund...
I am doing a thin lens lab and I need help finding f1 and f2, I know that f1 is based off of the coverging lens and F2 is based off of the diverging lens My source is at 1.00M on the track, the converging lens is at 79.8 cm, the screen is ar 51.1 cm Then he put the diverging lens in at 66.6 cm and moved the lens paper to 30.6 cm So I also know that we...
I am doing a free-falling experiment with five trials with a meter stick and need to calculate reaction time (s). I need to convert to both SI units and English units. My stats are Fall Distance 1: 31cm Fall Distance 2: 20cm Fall Distance 3: 22cm Fall Distance 4: 15cm Fall Distance 5: 14cm 1. I need to calculate the reaction time for each and then the average reaction time 2. I need to show conversion of fall distance from English...
I need help figuring out how to approach a problem. I need to determine the initial velocity of an object for it to be at a specific height at a specific time. For example, what would the initial velocity of an object need to be for it to be at 38.7m @ 4.7 seconds if thrown straight up from the ground (launched up at 90 degrees)? If I understand correctly, there could be two answers, one for the initial trip...
I am doing the experiment, "Determination of Specific
Heat of a Metal". I have completed the physical experiment, I just
need help filling out the last line, determining what the average
specific heat capacity of the unknown metal is. Thank you!
Table 2: Mass Mass (g) Water 49.7 10.3 Unknown Metal Strip Table 3: Specific Heat Data Temperature (°C) Time (minutes) Trial 1 Trial 2 Trial 3 Initial 24. 24.0 25.0 5 minutes 25.0 6 minutes 25.0 26.1 27.0 27.0...
Hi! I am doing a chemistry lab and I am lost on where to start. Below are the equations of interest in this laboratory exercise. As you know from reading the laboratory handout, your goal is to determine the enthalpy change for reaction 1 1. (1) Mg(s) + 1/2O2(g) → MgO(s) ∆H1=∆Hf(MgO) = ? (2) Mg(s) + 2H+(aq) → Mg2+(aq) + H2(g) ∆H2 (measured) (3) MgO(s) + 2H+(aq) → Mg2+(aq) + H2O(I) ∆H3 (measured) (4) 1/2O2(g) + H2(g) → H2O(l)...
Hello, I need help understanding a lab we are doing in class tomorrow. I need to know which is the "ORGANIC LAYER" ... we are using a separatory funnel, and I would like to know whether the organic layer will be on top or on the bottom. This is in order for me to correctly carry out the experiment. The lab is similar to this one I found online, and its very vague for me as to what is the...