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A student attempted to identify an unknown compound by the method used in this experiment. she found that when she heated a sample weighing 0.4826 g, the mass barely changed, dropping to 0.4855 g. when the product was converted to a chloride, the mass went up, to 0.5247 g.
Is this a carbonate? if so why or why not?
What might the two unknown compounds be?
A patient needs 2.80×10-2 of a sulfa drug. There are 8.00 tablets in stock. How many tablets should be given?
Compute the partial pressure of N2 at the surface of theH 2 O in mmHg. The Henry's law constant for nitrogen gas =1.3x 10^-3 mol/L x atm? at 25 degrees Celsius
how many moles of N atoms are there in .882 moles of (NH2)2CO?
where all compounds are assumed as covalent then determine which reaction must be endothermic and also explain your answer briefly?
A sheet of aluminum foil has a total area of 1.000 ft^2 and a mass of 3.626g. What is the thickness of the foil in millimeters (density of AL = 2.699 g/cm^3)?
The base solution was added to the acid solution but was not stirred while temperature measurement were not made: c.) Some of the base splashed out of the calorimeter while pouring:
sodium azide, a compound containing only sodium (Na) and Nitrogen (N), is used as a propellant for inflating airbags in some automobiles. A sample of sodium azide was weighed into a crucible.
In another experiment it was determined that for each mole of hydrocarbon, 7 moles of oxygen gas are consumed and 5 moles of CO2 gas and 3 moles of H2O liquid are produced. Find ?H per mole of this hydrocarbon (in kJ) at 298 K
What mass of F2 is needed to produce 205 g of PF3 if the reaction has a 79.3% yield?
A green leaf has a surface area of 2.00 cm^2. If solar radiation is 1030 W/m^2, how many photons strike the leaf every second? Assume three significant figures and an average wavelength of 504 nm for solar radiation.
arrange the following in increasing order of mass.
Sketch the typical stress-strain curve for a metal and a ceramic. Using the sketch, indicate the following properties; elastic and plastic regions, yield points, Ultimate Tensile Strength (UTS), strain energy and fracture toughness.
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