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Thomas used equimolar amounts of diethylamine and alpha chloro-2,6-dimethylacetanilide in the preparation of Lidocaine. All the starting material reacted but failed to isolate any Lidocaine. Why?
Parqueting by an object is covering a plane by copies of the same object. Can you parquet the plane by an equilateral triangle and which regular n-gons is it possible to parquet the plane?
It is valuable to know that 1 milliliter (mL) equals 1 cubic centimeter (cm^3 or cc). How many cubic centimeters are in an 8.00 oz bottle of cough medicine?
A Square and a rectangle have the same area of 36cm2. What is thelength of the side of the square? If the rectangle has a lengthwhich is 3 cm more than the side of the square,find the length.Find th
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 soluti
The same sequence is found on both strnads, but running in opposite directions. what word describes this characteristic?
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
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.
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?
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?
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
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.
Let A, B, and C be three noncollinear points and let P be a point in the interior of angle BAC. Then P lies on the angle bisector of angle BAC if and only if d(P, AB) = d (P, AC)
An embroidered placement costs $2.95. An embroidered table cloth is similar to the placemat, but four times as long andfour times as wide. How much would you expect to pay for the tablecloth?
What are the two types of errors one encounters in experiments? Give an example of each. You may use examples from your chemistry, biology, or other physics courses.
How many grams of the tablet should be used to provide 75.0 mg of CaCO3? How many mg Ca are contained in the partial tablet?
A 0.5118 g sample of CaCO3 is dissolved in 6 M HCl, and the resulting solution is diluted to 250.0 ml in a volumetric flask. What is the molarity of the Ca2+ ion in the 250 ml of solution?
How many minutes does it take for a radio message to reach earth from Saturn if Saturn is 7.9X10^8 km from earth?
If you know two triangles are similar by the SAS Similarity Theorem what, additional piece(s) of information would you need to prove this triangles congruent? Please explain why.
The order reads 12,000 units of heparin for your patient. The vial on hand is labeled 10,000 units per cc. How many cc should the patient receive?
Two angles are supplementary. The measure of the smaller angleis one-half the measure of the largeer angle. Find the the degree meausre of the larger angle.
It gives a negative test with Br2/CHCl3, but decolorizes KMnO4. (Both results are correct.) What can you infer about your unknown?
A rectangular piece of paper is folded so that one corner lands on the opposite corner. The crease is as long as the longer side of the rectangle. What is the ratio of the sides of the rectangle?
Prove that the formula for the sum of the measures of the interior angles of a n-gon is 180(n-2) or 180-360 (Polygon AngleSum?) using a heptagon that can be cut into 7 congruent isosceles triangle.
Nitrogen and oxygen form an extensive series of oxides with the general formula NxOy. What is the empirical formula for an oxide that contains 30.44% by mass nitrogen?