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Photosynthesis uses 660 nm light to convert carbon dioxide and water into gluclose and oxygen. calculate the energy of a mole of a photon
When Fe(NO3)3 is dissolved in water, hexaaquiron(III) ions, Fe(H2O)6 3+, forms. Fe(H2O)6 3+ ions hydrolyze in aquesous solution accoring to the equation given below.
A solution of potassium chromate is prepared at pH 7.72. Calculate the fraction of the total chromate in this solution that is present as the chromate ion CrO42-.
A wooden artifact from a Chinese temple has a activity of 43.3 counts per minute as compared with an activity of 58.2 counts per minute for a standard of zero age
Consider the following reaction: CO(g)+2H2(g)-->CH3OH(g) Kp=2.26x10^4 Calculate deltaGrxn for the reaction at 25 C at equilibrium and when: PCh3OH = 1.1 atm, PCO = PH2 = 1.3*10^-2 atm. I got the correct original deltaG, it's -24.8 KJ
In acid-base equilibria, the strength of acids and bases are reflected by their Ka's and Kb's, respectively. Explain, using examples while Ksp cannot directly reflect the solubility of the ionic compound. When can Ksp be used to directly compare t..
The recovery of CaCo3 was attempted by adding #m H2SO4 instead of 3M HCL to the SiO2/ CaCO3 residue.
Determine the volume of SO2 (at STP) formed from the reaction of 96.7g of FeS2 and 55.0 L of O2 (at 398K and 1.20 atm). The molar mass of FeS2 is 119.99 g/mol.
Describe an expreiment to determine the molal freezing point depression constant
A student takes a mixture of sugar (C6H12O6), diamond powder (C) and BaCO3, separates the mixtures and recovers 1.75g sugar, 0.86g diamond powder and 2.29g BaCO3(s). Student % recovery was 96.46%, less than the initial amount of mixture they start..
An aqueous solution containing 16.2g of an unknown molecular (nonelectrolyte) compound in 102.0g of water was found to have a freezing point of -2.0C.
E1 mechanisms a little clearer? maybe make a chart with simmilarities and differences and how to know which one is which?
10M NaF solution is slowly added with stirring, to a solution that contains 10M Ca(NO3)2 and 10M Cr(NO3)3 .Which salt CaF2 - or - CrF3 precipitates first? The Ksp for CaF2 = 5.3x10^-9 & Ksp for CrF3 = 6.6x10^-11
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