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An electron acquires 100fJ of kinetic energy when it is accelerated between two paralle lplates placed at a distance of 1mm
0.2356 g sample containing only NaCl and BaCl2 yielded 0.4637g of dried AgCl. Calculate the percent of each compound in the sample.
There is a +10 nC charge inside a cube of size 5 cm. What additional charge must be placed into the cube
A 455pF capacitor is charged to 155V and then quickly connected to a 255mH inductor. Determine the peak value of the current
Calculate the molar concentration of HCl in a solution that has a specific gravity 1.185 and is 36.5% (w/w). Prepare from this bottle 1 L of 0.1 HCl solution. 25 mL of this solution titrated with 30
We could find out more information about ths reaction by studying the temperature dependence of the rate constant, k. These same experiments could be carried out at a lower temperature (ice bath) an
At an outdoor market, a bunch of bananas is set into oscillatory motion with an amplitude of 20.0 cm on a spring with a force constant of 16.0 N/m. What is the weight of the bananas in newtons
Two wires are separated by 3.0 cm and each is of length 1.5 m. They repel each other with a force of 4.0 N. The current in one wire is 5.0 A. find the current in the other wire
0.4 grams sample of primary standard Na2CO3 treated with 45mL of dilute perchloric acid. Solution boiled to remove CO2 and then the excess HClO4 back titrated with 13mL of dilute NaOH
A 0.45 kg object connected to a light spring with a force constant of 19.6 N/m oscillates on a frictionless horizontal surface. Determine the maximum speed of the object
If the frequency of oscillation of the wave emitted by an FM radio station is 95.8 MHz, determine the wave's period of vibration
A 7.0mW laser beam has a circular cross section with diameter 0.80mm, What is the maximum radiation pressure that this laser can exert on a mirrored surface
A perfect gas has a constant volume molar heat capacity of CV,m = 1.5× R, and a constant pressure molar heat capacity of Cp,m = 2.5× R. For the process of heating 4.50 mol of this gas wi
Given the mass of the rubber in the balloon is 1.40 g, what is the net vertical force on the balloon if it is let go, Calculate the buoyant force on a 2.00 L helium balloon.
In the temperature range from 40 K to 90 K, a certain amount of liquid has a temperature dependent heat capacity that is given by Cp = 18.5 J K?1 + T × 0.24 J K?2. Determine the enthalpy chang
Write the molecular equation for the combination of KNO3 (aq) and BaCl2 (aq). Include states of matter. I wrote 2KNO3 (aq) + BaCl2 (aq) ---> 2KCl (aq) + Ba(NO3)2 (aq) but it says it is wrong.
A 77.0 kg man floats in fresh water with 3.00% of his volume above water when his lungs are empty, Calculate the volume of air he inhales--called his lung capacity--in liters
Use the following values for mass and charge: an electron has mass me = 9.11x10-31 kg and charge -e, a proton has mass mp = 1.67x10-27 kg, What is the kinetic energy of the electron
A certain weak base has a Kb of 7.80 × 10-7. What concentration of this base will produce a pH of 10.16
With the switch open the ammeter reads 1.00 A. What is the resistance of resistor R2 to an appropriate precision and what is the potential difference across R2 when the switch is open?
a straightforward method of finding the density of an object is to measure its mass and then measure its volume by submerging it in a graduated cylinder, What is the density of a 220 g rock
Sodium Carbonate (NaCO3) is available in very pure form and can be used to standardize acid solutions. What is the molarity of the HCl solution if 25.3 mL of the solution is required to react with 0
A small ball is set in horizontal motion by rolling it with a speed of 5.00 m/s across a room 10.0 m long, Select the reason why the motion is periodic
NH3 is a weak base (Kb = 1.8 × 10-5) and so the salt NH4Cl acts as a weak acid. What is the pH of a solution that is 0.049 M in NH4Cl
The gas above the top liquid is at an absolute pressure of Pg. Furthermore, the densities and heights of liquid 1 and liquid 2 are P1 and P2 , and L1 and L2 , respectively. In terms of these given s