Phenol red indicator changes from yellow to red in the ph
Phenol red indicator changes from yellow to red in the pH range 6.6 to 8.0. State what color the indicator will assume at the equivalence point for the titration of NHc with HCL
a) red
b) yellow
c) red/ yellow mix
d) there is not enough info.
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A 860 ? resistor is connected to a variable-voltage power supply. What current flows in the resistor when the voltage is 15 V?
The input to a certain filter is given by Vin(t)=2cos(10000pi*t-15deg) and the steady state output is given by Vout(t)=5cos(10000pi*t+25deg). Determine the (complex) value of the transfer function of the filter for f=5000 Hz.
What is the theoretical yield (in grams) of gold when 1.378 L of hydrogen gas (density = 0.0902 g/L) reacts with 20.14 g of gold(III) chloride in solution
The average intensity of sunlight at the top of the earth's atmosphere is 1385 W/m2. What is the maximum energy
An input signal given by Vin(t)=5cos(500pi*t)+5cos(1000pi*t)+5cos(2000pi*t) is applied to a basic lowpass RC filter. R=318.3 ohms and C=1 microFarad. Find the expression for the output signal in terms of t and pi.
Calculate the conditional formation constant Kf' for the formation of an EDTA complex with copper(II) at a pH of 5.00, if log Kf = 18.80.
A certain Carnot engine produces 200 J of work per cycle, what is the change in entropy of the hot reservoir per cycle
Calculate all measures of central tendency and depict what happens before and after the addition of the two transfer students.
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