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a) What were the values of the mean mass and the random error for the five sets of ten beads as calculated on your spreadsheet?
b) What mass and random error should you report for one bead? Show your work.
Problem- A nonvolatile organic compound Z was used to make up two solutions. Solution A contains 1.00 g of Z dissolved in 100 g of water and has a vapor pressure of 754.5 mmHg at the normal boiling point of water. Calculate the molar mass of Z in ..
The wedge is connected to a pendulum and swings through an arc and hits the sample at the bottom of the arc. The sample breaks and the wedge continues its swing to a height of 0.5 m. The energy required to break the sample is closest to
explain what fraction of time does the particle spend in the first fifth, second fifth, third fifth, fourth fifth and final fifth of the box respectively.
Light travels extremely rapidly (c = 3.00×108 ). Suppose you had to travel 20 miles to work every day. If you traveled at the speed of light for the entire trip, how long would it take you to get to work (in seconds)? [1 mile = 1.61]
Using sio2-al2o3 phase diagram , with pt a at 2000c, and pt b 1600c above the line, and pt c 1560 below the line, pt d 1400 c or for that matter any tem below 1400 c
Determine all equilibrium concentrations, the pH, the pOH and the percent ionization of each of the following acids in water.
Assuming no energy is transferred to or from the surroundings, calculate the final temperature of the water after all the ice melts.
If 40.0 g acetylene is allowed to react with 40.0 g oxygen, how many grams CO2 are formed.
A particular system is doing work on the surroundings as well as gaining heat from the surroundings. What can be said about the values of q (heat) and w (work) for this system?
A 15.0 L sample of a gas has a mass of 18.0 g at 25.0 ° C and 740. torr. What is the density of the gas at STP?
Calculate the amount of heat liberated (in kJ) from 355 g of mercury when it cools from 76.0°C to 13.0°C.
If the measured cell potential is 0.95 V at 25 °C and the standard reduction potential of the Ag /Ag half-reaction couple is 0.80 V, calculate the hydrogen ion concentration in the anode compartment.
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