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State a Lewis structure that obeys the octet rule for each of the following ions. Allocate formal charges to each atom.
write the net ionic equation, excess concentrated sulfuric acid is added to solid calcium phosphate
write a chemical equation for the oxidation of ethane gas to form water vapor and carbon dioxde gas. define this as the
fifty mililiters of 1.00m hno3 was added to 50.5 ml of 1.00m of naoh solution. calculate the mass of the reaction
calculate the standard enthalpy of formation of carbon disulfide cs2 from its elements given the following
When 0.228 g of the hydrate ZnSO4•xH2O is heated, 0.128 grams of anhydrous ZnSO4 remains. What is the value of x in the formula for the hydrate
A bicycle tire contains nitrogen, oxygen, and argon gases.If the partial pressures are 48.0 , 14.5 , and 0.4 , what is the total pressure (in atm)
a student titrates 50ml apple juice and reports the following inthe titration to the phenolphthalein end point with
indicate whether aqueous solutions of each of the following solutes will contain only ions, only molecules, or mostly molecules and a few ions: a) NH4Cl, a strong electrolyte. b)ethanol, CH3-CH2-OH, a nonelectrolyte. c)HCN, hydrocyanic acid, a wea..
The formula weight of compound X is 14,200 g/mol How many total mg of X are there in the panda pancreas?
A typical home uses approximately 2000 kWh of energy per month. If the energy came from a nuclear reaction, what mass would have to be converted to energy per year to meet the energy needs of the home
The Co 2+ emerged from the column later. It, too, was treated with 25.00 mL of 0.03872 M EDTA. How many milliliters of 0.02127 M Zn2+ will be required for back titration
Codeine (C18H21NO3) is a narcotic pain reliever that forms a salt with HCl. What is the pH of 0.069 M codeine hydrochloride (pKb of codeine is 5.80)
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