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Equal amounts of heat are added to equal masses of aluminum and copper at the same initial temperature. Which metal will have the higher final temperature, and how many times greater will that temperature change be than the temperature change of the other metal?
Menthol, the organic substance in the pills can smell menthol cough drops, consisting of carbon, hydrogen and oxygen. A sample of 100.1 mg menthol burns in oxygen, yielding 282.9 mg of carbon dioxide and water 115.9mg.
Urea { (NH2)CO } is used for fertilizer supplyingnitrogen to the soil. Calculate the number of N atoms foundin 1.68 * 10^4g of urea.
Explain why it is preferable to take the geometric mean rather than the arithmetic mean when defining mean activity
The solubility of silver carbonate is 33.5 mg/L. What is it molar solubility and what is its Ksp?
A buffer solution contains 0.1 mole ch3cooh and 0.1 M sodium acetate (that is it has .2 m total buffering components of acetic acid + acetate) calculate the pH after addition of 4 ml of 0.025
Calculate the number of chromium atoms in a 2.0 cm by 1.0 cm by 7.0 cm piece of this stainless steel. Calculate the number of 52Cr atoms in the above sample. The natural abundance of 52Cr is 83.789%.
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 gmol in the
The diluted solution is then placed in a spray bottle for application on the desired surfaces. How many moles of luminol are present in 2.00 L of the diluted spray
what amount of heat would need to be added to 5.0 x 103 g of water to change its temperature from 21c to 84c?
What is the boiling point of a solution containing 15.0 g of urea in 0.500 L of water. The boiling temperature of pure water is 100.00 oC and the boiling point elevation constant of water is 0.5121 oC.m-1
When heated to 350 degrees C at 0.950atm, ammonium nitrate decomposes into the following gases: nitrogen, oxygen, and water. How many grams of ammonium nitrate are needed to produce 5.00 L of oxygen?
If 50.0mL of ethanol(density=.789g/mL ) initially at 7.0 Celcius is mixed with 50.0mL of water(density=1.0g/mL) initially at 28.5 celcius in an insulated beaker, and assuming that no heat is lost, what is the final temperature(celcius) of the mixt..
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