A robot equipped with a differential drive starts at the
position ?=1.0?, ?=2.0?x=1.0m, y=2.0m, with a pose
(heading) of ?=90∘=?2θ=90∘=π2radians. The aim is for it to move to
the position ?=1.5?, ?=2.0?x=1.5m, y=2.0m with a pose of
?=90∘=?2θ=90∘=π2. The distance between the wheels is ?=0.5?l=0.5m.
The movement of the vehicle is described by the parameters of the
velocity of the left wheel ??vl, the right wheel ??vr and the
driving time ?t.
Assuming that the robot may have to execute a...
How many moles of NaH2PO4 and how many moles of H3PO4 are needed
to make one liter of a 450. mM phosphate buffer with a pH of 2.6?
The pKa's for phosphoric acid are 2.16, 7.21, and 12.32.
ph= pka + log (conj base/conj acid )
How many grams of
NaH2PO4 and how many grams of
Na2HPO4 are needed to prepare 2.0 L of 1.50 M
“phosphate buffer” with a pH of about 8.00.
You are given:
For salt form of a
weak acid NaH2PO4 or weak acid
H2PO4-, pKa =
7.21 and Ka = 6.2 x 10-8
1 mol
Na2HPO4 = 142 g
Na2HPO4
1 mol
NaH2PO4 = 120 g
NaH2PO4
Select one:
a. Mass of NaH2PO4: 35.5 g and Mass of
Na2HPO4: 276.1 g...
If the perturbation is a constant potential, how many terms are
needed for an exact solution?
Question 2 options:
a)
Infinite
b)
One
c)
It depends on the nature of the system.
d)
Zero
e)
Two