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A 10.0 lb bag of 20:10:5 fertilizer is 20.0% nitrogen by weight.
a) Calculate how many grams of nitrogen are contained in the bag. (I got 907 grams of Nitrogen)
b) If the bag of fertilizer covers 8.6 x 10^4 ft^2, calculate the number of grams of nitrogen per square foot of coverage.
calculate the amount of energy needed in calories to heat 145 g of water from 22.3 degrees celsius to 75.0 degrees
Compute the pH of a buffer solution prepared by dissolving a 0.20 mole of cyanic acid (HCNO) as well as 0.80 mole of sodium cyanate(NaCNO) in enough water to make 1.0 liter of solution Ka(HCNO)=2.0*10-4
consider a lithium atom two of its electrons are in the 1sshell and the third is in the 2s shell1- consider the lithium
From the Bohr model of the hydrogen atom, what can we conclude about the energy required to excite an electron
the vapor pressure of pure water at 70degc is 230. mm hg. what is the vapor pressure depression of a solution of 135 g
If 14.0 mL of a 0.742 M solution of barium hydroxide is mixed with 25.9 mL of a 0.724 M solution of phosphoric acid, and 1.98 g of solid barium phosphate is collected once the reaction is complete, what is the percent yield of the reaction
If the volume of gasoline vapor and air at 1.00 atm of pressure is gradually decreased from 78.0 mL to 39.0 mL. What is the final pressure of ammonia if there is no chage in temperature
Consider the following reaction at 298 K. 2 SO2(g) + O2(g) ? 2 SO3(g) An equilibrium mixture contains O2(g) and SO3(g) at partial pressures of 0.42 atm and 1.5 atm, respectively. Determine the equilibrium partial pressure of SO2 in the mixture.
Calculate the standard entropy change for the reaction 2H2(g)+ 02(g) --> 2H_2O(l) using the data from the following table: Substance Delta Hf degrees Delta Gf degrees S degrees
There are two possible ways to connect the atoms in hydrogen cyanide: HCN and HNC. Write the Lewis structures and use formal charges to predict which is the more likely structural arrangement.
A goose is flying south for the winter at a constant speed. Keep in mind that one mile is 1.61 km, and one pound is 454 g.
If the symbol X represents a central atom, Y represents outer atoms, and Z represents lone pairs on the central atom, the structure Y--X(with 2 lone pairs)--Y can be abbreviated as XY2Z2
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