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Explain what would be the value for a phosphorus standard if it contained 0.035% KH2PO4 as well as if 0.2mL of the standard was used? Report in mmol/L
In an experiment 1.65g of lead(ii) nitrate react with .327g of zinc. What is the mole relationship between the lead nitrate and the zinc.
scientist wants to make a solution of tribasic sodium phosphate for a laboratory experiment. how many grams of the
This given reaction: 2 O3(g) -→ 3 O2(g) has an empirically determined rate law (with a single unimolecular event). Determine what is the observed rate If k =4.0 × 105s-1, [O2] = 0.2M and [O3] = 0.5 M?
Starting with the standard free energies of formation from the following table calculate the values of change of G and Ecell of the following reactions
20.0grams of HI is introduced into an evacuated vessel at 731K and allowed to reach equilibrium. Find the mole fractions of H2, I2, and HI present at equilibrium. Kp = Kc = Kx = 65.0 for the reaction H2(g) + IO2(g)----2 HI(g)
Describe the reaction as a balanced chemical equation that occurs when methane which is a natural gas, CH4 is burned in the presence of excess oxygen, O2. If 100g of Butane are reacted with unlimited amounts of oxygen
Platinum crystallizes into a cubic lattice structure that has a total of four Pt atoms per unit cell. (a) What type of unit cell does platinum form. (b) What is the mass of a unit cell of platinum
describe the change in conductivity as the concentration of the NaCl solution was increased by the addition of NaCl drops
You find a log that could be spruce or birch. In order to figure out which is, you put the log in a big bucket and find that it displaces 2.7 gallons of water and it weighs 19.8 lbs. Is it spruce or birch? (Density of spruce 0.9 g/cm^3, birch 0.4 ..
Titration of 80 ml of unknown concentration of H3PO4 requires 126ml of 0.128M KOH. What is the concentration of H3PO4?
determine the new volume ofnbsp a 1.3 l balloon if it is taken from room temperature that is twenty five degree celsius
calculate the percentage of empty space in 1 mol of water at 25C. Obtain the density from the experiment " Some Measurements of Mass and Volume." The volume of a molecule of water can be taken as the sum of the volumes of the two hydrogen atoms.
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