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1. Explain why adding an excess of PO43- will cause a more complete precipitation of Ca(PO4)2.
2. Strontium phosphate is also insoluble in water. knowing calcium phosphate is insoluble, why is it not surprising that strontium phosphate is also insoluble?
One of the advantages offered by a synthetic detergent is that it won't form "soap scum" with hard water. Show the chemical reaction that a soap (use RCO2-) undergoes with calcium or magnesium ions
Write an equilibrium expression for each chemical equation involving one or more solid or liquid reac- tants or products.
Does replacing copper nitrate solution with copper chloride solution effect anything? if so, what and why?
Write a balanced equation including states of matter for the reaction of Zn(H2O)4 2+ in aqueous NaCN. You can assume sodium is a secator ion and does not need
The energy required to ionize boron is 801 kJ/mol. What minimum frequency of light is required to ionize boron?
What is the concentration ratio of CO2 (usually written as H2CO3) to HCO3- in blood at pH = 7.40. (carbonic acid Ka1 = 4.3 x 10-7)
What volume of H2 gas (in L ), measured at 742 mmHg and 84C, is required to synthesize 25.8g of CH3OH ?
what are possible reasons for the differences observed in conductivity for H3PO4 and H3BO3? Explain it please. B) Write out the dissociation steps for H3PO4 and H3BO3.
Write an equation for any changes observed.
A sample of 1 mol Kr expands reversibly and isothermally at 373 K from 1L to 10L. Use the virial equation of state up to the second coefficient B= -20 cm3 mol-1 and dB/dT= -25 cm3
calculate the theoretical yield of when 108 g of c2h5cl reacts with 236 g of assuming that and react only to form
Calculate the number of grams of alcohol present in 1.00 L of 87 proof gin. The density of ethanol is 0.798 g/mL.
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