A buffer is prepared by mixing 500 ml of 04 m na2hpo4 and
A buffer is prepared by mixing 500 ml of 0.4 M Na2HPO4 and 500 ml of 0.2 M NaH2PO4 (pK1 = 2.10; pK2 = 6.70; pK3 = 12.30)a) Calculate the pH of this bufferb) Calculate the change in pH if 10 ml of 1.0 N HCl are added to this buffer.
Expected delivery within 24 Hours
the frequency of a signal is equal to the reciprocal of the signal's period (f=1/p). For a computer with a 2.4 ghz clock, what is the clock period
An ultracentrifuge having a diameter of 17.3 cm produces an extremely large acceleration of 2.71E+5 m/s2. estimate the angular speed of the centrifuge
Select a specific category of vertical applications to investigate. Use the Internet and any other sources of information you might have to examine some of the different products that are available in that category.
the signal shown below is a sine wave as it might be displayed on an oscilloscope. If it takes 40 msec. for the waveform to travel between the points shown by the arrow "B" below, what is the frequency of the waveform
A buffer is prepared by mixing 500 ml of 0.4 M Na2HPO4 and 500 ml of 0.2 M NaH2PO4 (pK1 = 2.10; pK2 = 6.70; pK3 = 12.30). Calculate the pH of this buffer.
You are going to be given $100,000 in 12 years. Assuming an inflation rate of 3.5%, what is the present value of this amount?
Suppose a duck lives in a universe in which h = 2? J · s. The duck has a mass of 2.70 kg and is initially known to be within a pond 1.90 m wide. determine the uncertainty in the duck's position after this time interval
A capacitance C=35 uF is in parallel with a certain element. Identify the element, given that the voltage and total current are v=150sin3000t(V) and i of tau=16.5sin3000t+72.4 degrees (A)
You will receive $1,200 at the end of the next 15 years, assuming a 8% discount rate, what is the present value of the cash flows?
1934346
Questions Asked
3,689
Active Tutors
1459257
Questions Answered
Start Excelling in your courses, Ask a tutor for help and get answers for your problems !!
Examine historical literature to the most current period to see the growth of romanticism and EXISTENTIALISM. any major developments
Question: Identify a true statement about validity as applied to a test. Multiple choice question
Which of the following is a behavioral indicator related to Family? A) Developing school readiness and transition strategies B) Developing collaborative
Working in the yard, you feel unpleasantly hot and sweaty when you come in the house, so you take a shower and begin to feel better.
Early food experiences can impact development over several learning domains, including Social and Emotional Development, Language
Think about where you were the most and least engaged when reading a classmate's draft. Think about what captured your attention
Describe the results, including any scores. Result: E6% Extraverted Action oriented, Outgoing, Expressive, Hands-On S17% Sensing Traditional,