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The agricultural activities that contribute to a global increase of greenhouse gases in the atmosphere.
Problem- Lets combine your knowledge of transpiration and photosynthesis on this question. In a natural environment, which of the following could negatively impact the rate of photosynthesis?
Part A: Thymolphthalein is an indicator that changes color over a range from pH = 9.3 to pH = 10.5 . What is Ka of thymolphthalein. Part B: Alizarin yellow R, Ka=7.9x10^-12
Question- You are given a substance and told that its empirical formula is identical to its molecular formula. The compound is known to be comprised of 37.483% C, 49.935%O, and 12.582%H. What is the empirical formula of this compound
a mixture contains two compounds x and y. both compounds x y have a solubility 1 g100 ml of solvent at the temperature
one of the standard solutions had an abnormally low absorbace reading, causing a less positive slop for the data plot. a. Will the equilibrium concrentration of feNCS2+ in the test tube be too high or too low?
1. half reactions what is the oxidation and reduction for the following formula3 mg n2 rarr mg3n22. if 90.0 ml of
in an air-conditioned room at 19.0 c a spherical balloon had the diameter of 50.0 cm. when taken outside on a hot
There are 3 different possible structures for dibromoethene molecule, C2H2Br2.One of them has no net dipole moment, but the other two do. Draw a Lewis strucutre for each isomer. Include H atoms.
a 1.00l buffer solution is 0.250 m in hf and 0.250 m in naf. calculate ph of the solution after the addition of 100.0ml
The addition od 3.16g of this compound to 75 mL of cyclohexane (d= 0.779g/ml) gives a solution with a freezing point of 0.0 degrees Celsius. The normal freezing pt of cyclohexane is 6y.50 degrees Celsius and its freezing pt depression constant of ..
Determine the following characteristics of the titration curve for 20.0 mL of 0.20 m NH3(aq) tiltreated with 0.25 m HI(aq) A) The initial pH B) The volume of 0.30 M HI at the equivalence point c) The pH at the half equivalence point
a 345 ml container holds nh3 at a pressure of 745 torr and a temperature of 45 degrees celsius. what is the molar
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