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Every morning Ann walks her dog through the park, shown as a green square on the diagram below. They start at point 1, walk one block up the street, take a turn at the corner labeled 2, and walk diagonally through the park to point 3. To return home, they walk two blocks down the street and turn right at the corner labeled 4. Draw the path 1?2?3?4?1 taken by Ann as she walks her dog. Represent each segment of Anna's walk with a vector. The vectors should start and end at the centers of the red dots located on the image.
For each line in the hydrogen spectrum, how do you deduce n2 (the upper state) and n1 (lower state) and if you could record the absorption spectrum of hydrogen gas, what would it look like?
How much heat is required to vaporize 55.0 of acetone at its boiling point? The heat of vaporization of acetone at its boiling point is 29.1.
pKa of a carboxylic acid group found on a molecule of DOM is 4.2 and pKa of An amino group found on a molecule of DOM is 9.3. Explain how pH influences the ability of these groups to bind to metals. Illustrate how well each of these groups would b..
anesthetic contains 64.9 % carbon, 13.5 % hydrogen, and 21.6 % oxygen by mass. At 120 degrees C and 750 mmHg, 1.00 L of the gaseous compound weighs 2.30 g.
What mass of ethylene glycol, HOCH2CH2OH, must be dissolved in 4.510 kg of water to result in a freezing point of 18.0°C? What is the boiling point of the same solution?
calculate the number of excess reagent units remaining when 84 C2H4 molecules and 270 O2 molecules react?
how many cans of Mountain Lightning would an individual have to drink to die from a tartrazine overdose If the LD50 of tartrazine in humans is supposed to be 12,750 mg/kg (as it is for mice) and the average human weighs 70 kilograms,?
Why E2 is favored over SN2, Sn2 requires a strong nucleophile while E2 requires a strong base. But relatively compared if you have a very strong base the E2 is preferred. Why is it so?
Excess Ag2CO3 is added to an 0.2 M K2CO3solution. Calculate the equilibrium concentration of Ag+ under these conditions.Ksp for Ag2CO3 is 8.1 x 10-12.
How would you write a balanced chemical equation using structural formulas to show how acetic acid reacts weakly with water to transfer a proton and produce a hydronium and an acidic ion?
A system absorbs 192 kj of heat and the surroundings do 120 kj of work on the system. what is the change in internal energy of the system
Iron is obtained commercially by the reaction of hematite (Fe2O3) with carbon monoxide. How many grams of iron are produced if 25.0 moles of hematite react with 30.0 moles of carbon monoxide?
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