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An experiment shows that a 112-mL gas sample has a mass of 0.120 g at a pressure of 733 mmHg and a temperature of 33.0°C. What is the molar mass of the gas?
Some snake venom toxins contain proteins with RGD sequences that interfere with integrin functions; they are therefore called disintegrins. Give this fact, how specifically, could disintegrin-containing toxins cause or promote injury within human ..
Suppose that for a particular flight involving a jumbo-jet with 265 seats, the airline sells 278 tickets. What is the probability that the airline will not have enough seats for all the ticket holders who show for the flight?
What minimum mass of succimer (C4H6O4S2) (in mg) is needed to bind all of the lead in a patient's bloodstream? Assume that patient blood lead levels are 25 micrograms/deciliter.
What is the relationship, if any, between the amount shown in the adjusted trial balance column for an account and that account's ledger balance?
Why are bacteria, rather than say human cells, used as experimental organisms in molecular biology studies?
Reiner Wholesale Merchandise had 20,000 shares of 5%, $20 par value preferred stock and 15,000 shares of $25 par value common stock outstanding throughout 2003. These data apply to each of the independent situations below.
How should she proceed? What additional data (if any) is needed? Which statistical analysis technique should be used? Can an analysis be performed? Why or why not?
A 48.0-L gas cylinder contains 249 mol of H2 gas at 298 K. What is the pressure inside the cylinder.
Discuss the business entity that represents the best choice for each business, taking control, taxation, and liability issues into consideration.
One of the advantages of some newly developed rapid identification tools i that pure cultures are not needed. Why is pure culture necessary for biochemical tests such as the enterotube but not for DNA probes?
Determine how long will it take for the concentration to decrease to 0.13 mol/L express your answer in seconds.
Calculate the enthalpy change for the dissolution of NH 4 NO 3 and expree your answer in units of kJ/mol.
calculate mass of CCl 4 that formed if 1.5 moles of CH 4 react with 1.4 moles of Cl?
A 5.00 g sample of KBr at 25.0°C dissolves in 25.0 mL of water also at 25.0°C. The final equilibrium temperature of the resulting solution is 18.1°C.
Calculate the number of bromine molecules present in the flask if A flask contains 0.350mol of bromine, Br2 in liquid form .
Which of these given nutrients is likely to limit production if the light supply is adequate and there is no nitrogen fixation?
A flask contains 0.260 mol of liquid bromine, Br_2. Determine the number of bromine molecules present in the flask.
pKa of a carboxylic acid group found on a molecule of DOM is 4.2 and pKa of An amino group found on a molecule of DOM is 9.3. Explain how pH influences the ability of these groups to bind to metals. Illustrate how well each of these groups would b..
water has a molar heat of vaporization =40.79 kJ/mol, determine how many grams of water could be vaporized by 0.806 kilo Joules heat? Express your answer in units of g
Write down the electron configurations for C2 and F2. What is the bond order for each? Which one is likely to have larger bond dissociation energy.
Calculate How many grams of pure, solid sodium hydroxide are needed to make 500 mL of 0.15M NaOH solution and also express the answer in just 2 significant figures?
What is the temperature change If 84 joules of heat are added to a pure gold coin with a mass of fifteen grams? It is given that the Specific heat capacity of Au= 0.128
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