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A ball thrown at an initial angle of 37 and initial velocity of 23.0m/s reaches a maximum height. With what initial speed must a ball be thrown straight up tp reach the same maximum heaight?
the vapor pressure of pure water at 70degc is 230. mm hg. what is the vapor pressure depression of a solution of 135 g
What volume of O2 (g) is consumed in the combustion of 75.6L C3H8 (g) if both gases are measured at STP?
Calculate molar absorbancy of PAP if its diluted solution has an A280 =0.272.The cuvette's width is 1 cm.
Ammonia can be made by reacting calcium cyanamide (CaCN2) with water as shown: CaCN2 + 3 H2O => CaCO3 + 2 NH3.
what is the broglie wavelength of an electron moving at one-tenth the speed of light. mass of the electron 9.109
A single-stranded RNA phage replicates in E. coli with no DNA intermediates. The following experiments were performed to clarify the phage's mode of replication.
A hypothetical metal has a simple cubic unit cell and its atomic radius is 1.167 Å. Calculate the edge length of the unit cell. A hypothetical metal has a face-centered cubic unit cell and its atomic radius is 1.738
Determine the oxidation numbers of each elements in the following reaction, identify which of them are oxidized or reduced, if any: 2MnCO3(s)+O2(g) ---> 2MnO2(s)+2CO2(g)
The Bracket series of emission lines falls in the infrared region of the em spectrum, and each line is a result of an electron falling from a higher Bohr orbit to the n=4 level.
how many moles of gas are contained in a compressed air tank for a suba diving that has a volume of 7.0 L and a pressure of 210 atm at 25 0C .
Consider the following balanced thermochemical equation for the decomposition of the mineral magnesite. MgCO3(s) ? MgO(s) + CO2(g) ?Hrxn = 117.3 kJ
What is the balanced equation for a reaction between potassium iodide and lead II chloride
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