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For Ag+ ground stateion, how do you predict the type of orbital from which an electron will need to be removed to form the ion of greater positive charge?
A solution of FeCl3 has a concentration of 3.85m. What are the mole fractions and the mole percents of FeCl3 and H2O in this solution?
How many moles of nitrogen gas are there in a sample that occupies 35.0 L at a pressure of 3.15 atm and a temperature of 825K?
A sample of wood has a heat of combustion of 3.29 kJ/g. What quantity of the wood must be burned to heat 250 g of water from 18 degrees C to 85 degrees C? (The specific heat capacity of water is 4.1
If a typical glass (250 mL) of orange juice contains 100.0 mg of vitamin C, what is the molarity of vitamin C in the juice, treating the juice as you would pure water? The molar mass of vitamin C i
If platinum has a face centered cubic structure and a densityof 21.5g per cm cubed. what is the radius of the platinum atom?
Were they acidic, basic or neutral?For your example, givethe reason for the medicine and what characteristics lead you toyour conclusion about it's make-up.
A radioactive decay series that begins with 232-Th ends with formation of 208-Pb, how many alpha -particle emissions and how many beta-particle emissions are involved in this radio activedecays?
An isotonic solution contains .90% NaCl by mass per volume.Calculate the percent mass per volume for isotonic solutionscontaining each of the following solutes at 25*C.
How many moles of sodium bicarbonate are contained in 1mL of 10%aqueous sodium bicarbonate solution? Assuming you started with 60mgof benzoic acid, is this amout of sodium bicarbonate sufficient tor
Look at some food labels and give specific examples of organic compounds you find with these suffixes along with where they were found.
Each step of the catalyzed dehydration of 2-mthyl-2-butanol to give 2-methyl-1-butene and 2-methly-2-butene is reversible. How are the reaction conditions in the lab set up to take advantage of LeCh
Once the chromatogrpahic column has been prepared, why is it important to allow the level of the liquid in the column to drop to the level of the alumina before applying the solution of the compound
If a carbon is sp hybridized, how many additional bonding orbitals does it have? What types of orbitals are they and what is the name of the bond type they can form?
Density measurements can be used to analyze mixtures. For example, the density of solid sand (without air spaces) is about 2.84g/mL.
A Boeing 747 jet airliner carrying 568 people burns about 5.0 gallons of jet fuel per mile. What is the rate of fuel consumption in units of miles per gallon per person?
What is the vapor pressure of a solution made by dissolving 28.5 grams of c3h8O3 in 125 grams of water at30 °C. the vapor pressure of pure water at that temparture is 31.8 mmHg.
Calculate the frequency of electromagnetic radiation emitted by the hydrogen atom in the electron transition from n =5 to n = 4.
Although the acid-dissociation constant for phenol(C6H5OH) is 1.3 x 10-10. The base-dissociation constant for the phenolate ion(C6H5O-) is not.
Why is the turbidity of thehot solution used as an indicator for the ratio of ethanol to waterin the recrystallization of dibromobenzene?
A student did experiements to establish the relativity ofmetallic Zn, Cu, and Pb. The following observations were made: a)both Zn and Pb metals reacted with 6M HCl, but Cu metal did not.
How many grams of s of C10H8 must be added to 25 grams of CCl4 (p0=504 mm Hg) to produce a solution with a vapor pressure of 483 mm Hg?
A certain electromagnetic radiation has a wavelength of 5.50X 102nm. Calculate the energy of this radiation and determine the region of electromagnetic spectrum that this radiation is from.
An iron skillet weighing 1.48 kg is heatedon a stove to 172°C. Suppose the skillet is cooled to room temperature, 21°C. How much heat energy (in joules) must be removed to effect this coolin
Why doesn't this compound cause seawater to become acidic? if all this compound was to vanish from the atmosphere, would humans benefit? why or whynot?