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An object has a mass of 6.85g. when placed in a graduated cylinder containing 25.0 ml of water, the water level increased to 28.8 ml. Calculate the density of the object
explain why it is dangerous to mix solutions in a test tube by placing a finger
the periodic table when given a set of molecules, how can you decide which is most polar and has the most ionic character?
Phosphorus-32 has a half-life of 14.0 days. Starting with 8.00 g of 32 P, how many grams will remain after 112 days?
which reactions might lead to 1-bromobutane a. 1-butanol +NaBr b. 1-Butanul +NaBr/H3PO4 c. 1-butanul + KBr / H2SO4 d. 1-Butanul +NaBr/ HCl
Given N2 (g) + 3 H2 (g) ? 2 NH3 (g), which scenario will allow you to eventually reach an equilibrium mixture involving these chemicals? Place only H2 into a sealed vessel. Place only N2 into a sealed vessel. Place only NH3 into a sealed vessel.
"Discuss in detail, one way in which atomic nuclear decay takes place. What is the significance of atomic nuclear decay? Analyze the societal implications of using this process".
The compound MgSO4 is called Epsom salts. How many grams will you need to prepare a bath containing 5.80 moles of Epsom salts? Express your answer using three significant figures.
A certain quantity of a gas occupies 61.3 mL at 68 ?C. If the pressure remains constant, what would be the volume of the gas at 128 ?C?
calculate the molar change in chemical potential of an ideal gas that expands 10 times of its original vol. at 100k
What is the purpose of dissolving the acetanilide in glacial acetic acid prior to beginning the nitration reaction? What happens when you mix sulfuric acid with nitric acid?
A sample of 35 millimole of Krypton gas expands reversibly and isothermally at 373K from 5.25 cubic centimeters to 6.29 cubic centimeters. The internal energy, U, increases by 41.75 J.
A certain reaction has an activation energy of 70.0 kj/mol and a frequency of factor A1=7.80*10^12 M^-1 s^-1. what is the rate constant, k of this reaction at 24.0 degrees celcius.
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