Find mass percent of calcium carbonate in original mixture
A mixture of CaCO3 and CaO weighing 0.711 g was heated to produce gaseous CO2. After heating, the remaining solid weighed 0.432 g. Assuming all the CaCO3 broke down to CaO and CO2, calculate the mass percent of CaCO3 in the original mixture.
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Calculate the actual van't hoft factor for this mixture. About how much of the HNO2 is dissociated and explain how you know this, based on the calculated value of i.
A square support unit in a television is made with a sidemeasuring 4 centimeters. A new model being designed for the upcoming year will have a larger square with a side measuring 4.3centimeters. By how much will the area of the square be increased
Lidocaine is used as a drug during heart attacks to correct irregular heart rhythms called pvcs. The normal dosage is 1.5mg/kg/hour. How much lidocaine would a 264 lb man receive in 218 minutes?
Imagine a transversal intersecting two parallel lines. If the slope of the transversal is changed to increase one of the angles at the intersection by, what happens to the adjacent angle?
After heating, the remaining solid weighed 0.432 g. Assuming all the CaCO3 broke down to CaO and CO2, calculate the mass percent of CaCO3 in the original mixture.
The coordinates of (x,y) of each point on thecircle above satisfy the x2 + y2 = 25. Line l is tangent to the circle at a point A. If the x coordinate of point Ais -4, what is the slope of line l? the coordinates of the radiusof the circle is (5,0).
What is the proof type? Assume the hypothesis and the opposite conclusion are true. Showthis situation leads to contradiction. State that the originalconclusion must be true.
The same sequence is found on both strnads, but running in opposite directions. what word describes this characteristic?
A solution is prepared by dissolving 2.86 grams of sodium chloride, 3.9 grams of ammonium sulfate, and 0.896 grams of potassium iodide in 246 grams of water. Calculate the total mass of the solution
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