Calculate the wavelength of the electron
A scanning electron microscope operating at an accelerating voltage of 10 kV accelerates electrons to 20% of the speed of light, calculate the wavelength of the electron.
Now Priced at $20 (50% Discount)
Recommended (93%)
Rated (4.5/5)
A cylinder containing 23.5 moles of nitrogen gas has a volume of 9.81L. What is the pressure of the gas at 23°C?
Would the calculated value of k, the true rate constant, be in error if the concentration of dye was actually doubled the value you were told? Explain your answer.
Calculate the volume (in mL) of a 1.22 M Na2S solution needed to react with 2.75 g of AlBr3 (molar mass = 266.7 g/mol) in the following reaction:
Question: An unknown mass of each of the following substances, initially at 24.0 C, absorbs 1920 J of heat. The final temperature is recorded as indicated. Find the mass of each substance.
At 298 K a cell reaction has a standard emf of +0.17 V. The equilibrium constant for the cell reaction is 5.5 105. What is the value of n for the cell reaction?
The solubility product for cerium(III) fluoride is 8.0 x 10^-16 (A) what is the molar solubility of Cerium (III) Fluoride in water?
Rhenium-186 is a ß-emitter with a half-life of 90.0 hours. How long would it take for the activity in a sample of this isotope to decay to exactly one-third of its original value?
If the half-life of a radioactive element is 30.0 years, how long will it take for a sample to decay to the point where its activity is 70.0% of the original value?
1949415
Questions Asked
3,689
Active Tutors
1455357
Questions Answered
Start Excelling in your courses, Ask a tutor for help and get answers for your problems !!
Problem: After an incomplete abortion, a client asks the nurse to tell her again what is meant by an "incomplete abortion."
Question: Which sign indicates a child is a victim of bullying and would be included in a teaching session for teachers?
Which information would the nurse give a pregnant client about having a chorionic villus sampling (CVS): The test can lead to spontaneous abortion.
Question: The nurse writes the nursing diagnosis of Deficient Fluid Volume after performing a nursing assessment.
writes the nursing diagnosis label, Readiness for Enhanced Fluid Balance. What are the defining characteristics of this diagnostic label?
After an incomplete abortion, a client asks the nurse to tell her again what is meant by an "incomplete abortion."
A 16-year-old high school student comes to a community health center because of the fear of having contracted herpes.