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The background section describes why you want the bleach to be far in excess of the dye. State how much greater the bleach should be to be considered in large excess. If the due is 1 x 10-5 M how much can the bleach be diluted before you no longer consider it be in excess.
The pKa of acetic acid, HC2H3O2, is 4.76. A buffer solution was made using an unspecified amount of acetic acid and 0.30 mol of NaC2H3O2 in enough water to make 1.50 L of solution.
125 mL of H_2O is initially at room temperature (22.0C). A chilled steel rod at 2.0C is placed in the water. If the final temperature of the system is 21.5C, what is the mass of the steel bar?
A 28.0-g sample of water at 250. K is mixed with 47.0 g water at 300. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
A copper wire (density = 8.96 g/cm3) has a diameter of 0.41 mm. If a sample of this copper wire has a mass of 12 g, how long is the wire?
After heating, 37.19 grams of the anhydrous compound remained. What is the formula of the hydrate?
The speed needed to escape the pull of Earth's gravity is 11.3 km/s. What is this speed in mi/h.
If 7.00 mol calcium carbide (CaC2) reacts with an excess of water, how many moles of acetylene (C2H2) will be produced?
what mass of ammonium chloride can be added to 100 grams of water at 20 degrees C before the solution becomes saturated
What are the probable classes of hydrocarbon or hydrocarbon derivative (i.e.: alkane, alkene. ketone. ester. organic halide, etc...) in each of the following
calculate the minimum energy a photon must have to produce an electron hole pair in an extrinsic semiconductor of band gap 1.3 electron volts.
3.38 grams of nitrogen gas are mixed with excess oxygen gas. The reaction yields 6.63 grams of nitrogen monoxide. nitrogen (g) + oxygen (g) -> nitrogen monoxide (g)
Calculate the standard enthalpy of the reaction, \Delta {{H}^\circ}_{\rm rxn}, for the thermite reaction: \rm 2Al(s) + Fe_2O_3(s) \rightarrow 2Fe(s) + Al_2O_3(s)
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