How many grams of na3po4 will be needed
A scientist wants to make a solution of tribasic sodium phosphate, Na3PO4, for a laboratory experiment. How many grams of Na3PO4 will be needed to produce 500 mL of a solution that has a concentration of Na^+ ions of 1.50 \it M?
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How many grams of Na3PO4 are needed to react with 2.618 moles of Ba(NO3)2 in the reaction 2Na3PO4 + 3Ba(NO)2 >Ba3(PO4)2 + 6NaNO3
A 0.500-kg particle has a speed of 2.50 m/s at point circle a and kinetic energy of 7.40 J at point circle b. What is the net work done on the particle by external forces as it moves from circle a to circle b?
A 3.20-kg object has a velocity (5.60 ihatbold - 1.80 jhatbold) m/s. Find the net work done on the object if its velocity changes to (8.00 ihatbold+ 4.00 jhatbold) m/s.
The analysis of 4.017g of a strontium iodide hydrate revealed it contained 3.041g of anhydrous strontium iodide and thus 0.976g of water . Determine the formula of the hydrate.
A semiconductor laser in a CD player has an output wavelength of 780 nm and a power level of 0.10 mW. How many photons strike the CD surface during the playing of a CD 69 minutes in length?
The iron in a 1.0000g rock sample is dissolved, reduced to Fe+2 and titrated with dichromate. If the titration requires 12.40ml of 0.5000 Normal dichromate, what is the percentage of Fe2O3 in the sample?
Assuming the surroundings to be at 75 °F, determine the a) amount of heat transfer between the source and the refrigerant and b) exergy destroyed during this process.
If the size of the positive charge value is tripled for both of two point charges, to maintain the same mutual force between them what would be the ratio of old to new distance between the two point charges?
Two cylindrical resistors are made of the same material. The resistors, with resistance R1 and R2, have different radii, r1 and r2, and different lengths, L1 and L2. What is the relative values (r1/r2) for radii if lengths L1/L2 = 1/4 and R1 = 2R2
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