Determine the numbers of grams were obtained
Aluminum and oxygen react according to the following equation:
4Al(s) + 3O2(g) →2Al2O3(s)
If the product was obtained in 64% yield, determine the numbers of grams were obtained? In a certain experiment, 4.6 g Al(s) was reacted with excess oxygen.
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By using the equilibrium concentrations, determine the Keq for the formation of FeSCN2+ How to compare it to Keq literature value, and determine for their % difference?
How large a percentage of teenagers would you have to attract as listeners in order to increase the percentage of teenagers among your listeners to 45%? Give your answer rounded to the nearest whole percent.
Determine the total mechanical energy of the block if it comes momentarily to a stop?
Hydrazine is burned in the excess fluorine gas, producing the NF3. The balanced net ionic equation is:
Let, consider as positive the direction of motion of the 5.0 kg all along the straight line object before the collision. (i) Determine the linear momentum of the object of 5.0 kg before the collision?
If you plan to do another research about proportion of college women on diet such that margin equals to 0.06 with 99% confidence level, find sample size you require?
Determine the pH of a 0.100 molar solution of Na2CO3, which sodium salt of the one of the conjugate bases of this acid, Carbonic acid H2CO3 is a dipodic acid with ionization constant: Ka1 = 4.5 x10-7 (-7 is an exponent), Ka2 =4.7 x 10-11(-11is an
A student wants to place an object in front of the concave mirror in order to generate 1/2 the objects size. If the focal length of the mirror is around 5 cm, determine how far from the mirror must the object be positioned?
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