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The mass of Li2O produced when the 2.00 g of lithium reacts with the 2.00 g of oxygen is 3.02 g. Determine the percent yield? Where atomic weights: Li = 6.94, O = 16.00. 4Li + O2 --> 2Li2O
Determine the velocities of each of the masses after the band breaks. (Make a draw and point out the directions in terms of your coordinate system.)
Theoretically determine the numbers of moles of water should be formed if 0.3818 moles of C3H8 and 1.718 moles of O2 are allowed to react, and this is the only reaction which occurs.
Suppose that the star is a uniform sphere at all times (i) Suppose that the thrown-off mass carries off no angular momentum,
Graph f(x)= 3x^2+9x+2 to find out whether graph opens up or down? Determining the vertex, axis of symmetry, x and y intercepts, domain, range and whether function is rising or reducing?
Explain how IR, NMR, and the Mass Spec can be used to differentiate among the starting material and the product. Discuss which peaks would indicate the presence of the starting material, and which
At1100K a 1.00 L vessel initially contains 0.777 moles of SO3. Determine the Kc for the following reaction, if 0.520 moles of SO3remain at equilibrium?
If it required 27.92 mL of NaOH to reach the equivalence point, explain what was the concentration of the acetic acid solution? 20.00 mL of an acetic acid, CH3COOH solution of unknown concentration
A vat contains 2.93 M sulfuric acid solution. Determine the number of kg of KOH will be need to react totally with neutralize 864 L of the solution?
How much more acidic is water with pH 8.1 compared to water atp H 8.2? Discuss why a change in pH of the ocean water is likely to affect the many biochemical reactions taking place in the ocean wat
Determine the mass of iron would be needed to cover a football playing surface of 120 y ds x 60. Yds to a depth of 1.0 mm when the iron has a density of 7.87 g/cm3.
Resulting motion of weight is described by function y=(1/2)e^(-t/4)cos(4t), t > 0 where y is distance (in feet) and t is time (in seconds). Determine displacement when: a) t= 0 secs b) t= 3 secs
Naturally occurring silver consist of only two isotopes. 107Ag (atomic mass=106.91amu, abundance=48.16%) and the 109 Ag. Determine the percentage abundance of 109 Ag and calculate
She then creates the course correction, heading 8° to right of her original course, and flies 2 h in new direction. If she maintains the constant speed of 825 mi/h, how far is she from the start
What weight of A would be removed from a solution of 10g of an in 100mL of water by a single extraction with 100mL of ligroin? The distribution coefficient, k= concentration in ligroin / the concent
The molar mass of aluminum is 26.98 g· mol-, the molar heat capacity of aluminum is 12.5 J·K-1·mol-1, the molar mass of water is 18.01 g·mol-1 and the density of aluminum
using the graphing utility, graph relation between percentage of element B remaining and time. (c) using INTERSECT, find out time which elapses until half of element B remains.
Assume that terminal point determined by t is point (-3/5, 4/5) on unit circle. Determine point determined by each of the given . A) pi+t B) 2pi-t
Each of two observers 325 feet apart estimates angle of elevation to top of the tree which sits on straight line between them. These angles are 49 degrees and 59 degrees, for observers a and b, resp
What amount of cashews selling at $6.30 per pound should be mixed with pecans selling at $4.20 per pound to make 40 pounds of the nut mixture selling at $4.90 per pound?
If the dosage of 300mg is taken by the patient, write the function which can be utilized to model level of drug in blood as the function of time.
Find out equation of each line below using information given for each (Write answer in y = mx+b form) line having point (5,6) and parallel to the graph of 3x + 9y = 7 S
Lets suppose this trend would continue until 2020. A) Find formulas which model prodfit realized by every company where t is number of years since 2000. B) What profit each company realized in 2005?
Determine equation of form N(t) = Noe^rt for number of cars in Tanner City as the function of time t, where t = 0 corresponds to year 1990. Find population of the city in 2010?
If the dosage of 300mg is taken by the patient, write the function which can be utilized to model level of drug in blood as the function of time. How much of drug remains in blood after 12 hours.