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1)write the chemical formula for seawater contains manys salts, sodium chloride.write its chemical formula? what chemical process takes place when solid sodium chloride dissolves? 2)write the chemical formula for calcium carbonate is another salt? 3what is carbon dioxide approximate concentration?
Indicate whether the entropy of the following reaction is increasing or decreasing. explain. if heat is needed to make the reaction occur , is it endothermic or exothermic reaction.
calculate the wavelength in nm of light hz illuminating a sodium surface if the threshold wavelength of sodium is 544
Background: a 5.0 ml sample of a protein is in a solution of 0.5 M NaCl. This solution is placed in dialysis tubing to remove as much NaCl as possible. In theory, the final concentration of NaCl should be the same inside as outside of the dialusis..
explain which of the following ions would you expect to be morewater soluble hg2 or methyl mercury ch3hg? more lipid
Obtain from a reference work the solubility of silver acetate at 20 degree C. Usually this will be reported in units of grams per 100 mL of water
When pressure is applied to a liquid, its volume decreases. Assuming that the isothermal compressibility
What velocity must an electron have in order to have a de Broglie wavelength of 1.00 A? What velocity must a proton have in order to have the same de Broglie wavelength
Calculate the percentage of alcohol in the patient's body. State the chemical reaction that took place in the patient's body.
Histidine has three ionisable functional groups. Write the equilibrium equations for its three ionizations and assign the proper pKa for each ionization.
Question- Hardness in groundwater is due to the presence of metal ions, primarily Mg2 and Ca2 . Hardness is generally reported as ppm CaCO3 or mmol/L Ca2 . To measure water hardness, a sample of groundwater is titrated with EDTA, a chelating agent..
Calculate the percent relative error for the three solutions if perfect technique is used. Report the two new molarities. (The error in a 10-mL transfer pipet is 0.02, and the error in the 200-mL volumetric flask is 0.1)
During a molar volume of oxygen experiment indicate how each of the following errors would affect (increase, decrease, or no change) your calculated value for the molar volume of O2 at STP.
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