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This is a PHYSICAL SCIENCE QUESTION: You should write a paragraph that describe a time during your high school science class when you were curious about something in nature and DESCRIBE how you investigated it. In a second paragraph imagine If you were a professional scientist, could you think of a model, system, or theory on how you would describe or represent this real-world phenomenon that you investigated? Please give a brief fact to go with your statement and provide the cited source. At the end, ask a scientific question for someone else to answer.
Write out and balance the reaction for the decomposition of calcium chloride in water. Calculate the enthalpy of the reaction.
Nitrogen and hydrogen gases react to form ammonia gas as follows: N2(g)+3H2(g)-->2NH3(g) At a certain temperature and pressure, 1.7 L of N2 reacts with 5.1 L of H2. If all of the N2 and H2 are consumed, what volume of NH3(g) is produced at the sam..
Three solutions are mixed together to form a single solution. one contains 0.2 mol pb(CH3COO)2, the second contain 0.1mol Na2S and the third contains 0.1mol CaCl2. A. write the net ionic equations for the precipitation reaction or reactions that o..
the vinegar neutralizes the baking soda and converts it to CO2 gas, which bubbles out of the solution. Find out the limiting reagent in this reaction and compute the mass of CO2 produced.
Many esters have characteristic odors (usually pleasant). Methyl salicylate (ester) can be prepared from salicyclic acid and methanol via Fischer Esterfication.
an 18.0-g sample of magnesium is completely burned in the presence of air to form magnesium oxide. what is the mass of
Assuming that the addition of the acid does not change the volume of the solution what is the pH of the acid/water mixture in the flask?
Stearic acid, nature's most common fatty acid, dimerizes when dissolved in hexane. The equilibrium constant for this reaction at 28 degrees Celsius is 2,900. Estimate the equilibrium constant at 38 degrees C.
How does the shape and average distance of the electrons from the nucleus compare for a 2p orbital of nitrogen and a 3p orbital of sulfur
Why do you require to acidify (add concentration hydrochloric acid) to the reaction mixture previous to crystallization (Preparation on benzoic acid use oxidation)
a line in the Balmer series of hydrogen has a wavelength of 434 nm from what state did the electron originate
first 10 drops of copper ii sulfate was placed into two wells and then a piece of string that was completely saturated
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