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What is the final temperature (in °C) of 1.53 g of water with an initial temperature of 12.0°C after 7.478 J of heat is added to it?
Compute the number of mol of S represented by 1.810 x 10 -27 atoms of S, also determine the number of atoms of sulfur in 5.22 x 10 -7 kilograms of sulfur.
If a raindrop weighs 65 mg on average and 5.1 105 raindrops fall on a lawn every minute, what mass (in kg) of rain falls on the lawn in 1.5 h?
In a second 50.00mL aliquot, the ClO4- was reduced to Cl- with V2(SO4)3. Titration of the reduced sample required 40.12mL of the AgNO3 solution. Calculate the %KCl and %KClO4 in the sample
A line in the emission spectrum of an atom occurs at a wavelength of 560 nm. What is the energy difference between the two energy levels involved in this emission.
How many moles of O2 are needed to consume 0.52 mol of Mg in the following unbalanced reaction? Mg + O2-> MgO
Calculate the amount of heat needed to boil benzene (C6H6), beginning from a temperature of 6.7 degrees celcius.
If this energy were used to vaporize water at 100.0 degrees, how much water (in liters) could be vaporized.
a sample of nitrogen gas occupies 1.55 l at 27.0c and 1.00atm. what will be the volume be at -100.0 C and the same pressure
The temperature of Beaker X = 75°C and the temperature of Beaker Y = 50°C after Five minutes . determine the temperatures be after another 5 minutes have passed?
A 28.5 g sample of an unknown metal is heated to 95.0C and then dropped into 58.0 g of water in a coffee-cup calorimeter. The temperature of the water rises from 23.5 C to 27.1C.
Identify the orbitals to which a 4d electron may make an emission transition in the hydrogen atom and determine the dissociation energy of the molecule
Calculate the ratio of CH 3 NH 2 to CH 3 NH 3 Cl required to create a buffer with pH = 10.14. Express your answer using two significant figures.
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