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Hard water contains Ca+2, Mg+2 and Fe+2, Explain which interfere with the action of soap and leave an insoluble coating on the insides of containers as well as pipes when heated. Water softeners replace these ions with Na+.
If 1500L of hard water contains 0.016M Ca+2 as well as 0.0020M Mg+2, explain how many moles of Na+2 are needed to replace these ions?
Calculate the following quantity: final volume of a 0.0521M solution prepared by diluting 24.7 ml of a 0.136M lithium carbonate with water
If you have three pyruvate molecules each labeled with 14C at different positions (one is labeled at the carboxyl, one at the carbonyl, and one at the methyl), feed them sequentially to pyruvate dehydrogenase and the citric acid cycle,
the activation energy ea is 128.2 kjmol for a reaction. calculate the fraction of collisions that would beenergetic
Calculate the volume of air at 26 degrees Celsius and 0.92 atmosphere that is needed to burn completely 11.47 grams of pentane.
a proton in a linear accelerator has a de broglie wavelength of 144 rm pm. what is the speed of the
What is the balanced equation for the conversion of the fatty acid H3C-(CH2)20-COOH to acetyl CoA and other products?
What is the technique or test for the identification of the formation of alkenes and what mechanism occurs in the test
calculate the solubility of zinc hydroxide znoh2 in 1.00 m naoh.nbsp ksp 3.0 times 10-16 for znoh2 kf 3.0 times 1015
When coal is burned, the sulfur present in coal is converted to sulfur dioxide (SO2), which is responsible for the acid rain phenomenon. S(s) + O2(g) ? SO2(g) If 1.64 kg of S are reacted with oxygen, calculate the volume of SO2 gas (in mL) formed ..
Calculate the pH during the titration of 10.00 mL of 0.400 M hypochlorous acid with 0.500 M NaOH. First what is the initial pH (before any NaOH is added). The Ka for HOCl is 3.0 x 10-8 M.
Why is it necessary to remove the stopper from a reparatory funnel when liquid is being drained from it through the stopcock
Derive the relationship between the constants a and b of the Dieterici equation: p=(RT/V-b)exp(-a/RTV)
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