Explains the dissolving of solid magnesium nitrate
Write down a chemical equation that explains the dissolving of solid magnesium nitrate, Mg(NO3)2 in the water. Include charge on ions, describes the symbols, and balance the equation.
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The flower nursery manages 50,000 flowers and year sells 10% of flowers and plants 4,000 new ones. Write the recursive formula which gives number of flowers every year.
Estimate a calibration curve and why do we use a calibration curve to calculate the concentration of our unknown? Explain what would be the absorbance expected if the sample is diluted to a concentration of 0.040 M?
Determine the appropriate null and alternative hypotheses for examining the question of interest? Be sure to explain your choice of the alternative hypothesis.
A feed stream contains a mixture of 30% n-pentane, 40% n-butane and the 30%n-hexane flows into a flash unit. The Flash temperature is 290K and the flash pressure is 0.6 bar.
Calculate the balanced equation for this reaction, including the phase labels when a solution of lead sulfate reacts with a solution of sodium chloride to form lead chloride and aqueous sodium sulfate.
Estimate the mass in grams of the excess reagent remaining after he complete reaction of 5.91 g of NO2 with 1.54 g of H2O.
How large a value of n is required? Give a general formula for n in terms of desired margin of error m and the critical value z*.
A recent poll found that 30% of those surveyed are worried about aggressive drivers on the road. If three people are selected at random, what is the probability that all three will be worried about aggressive drivers on the road.
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