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If a sample of Zn(s) is reacted with HCl(aq) to form hydrogen gas. The H2 gas bubbles out of aqueous solution and is collected in a 457.0 mL container at 686.5 Torr and 25 C. define how many grams of zinc reacted? Be sure to account for the vapor pressure of water in the collected gas sample.
What are the bond angles in a model of CCl4 a) less than 109.5 degrees b) 109.5 degrees c) less than 120 degrees but greater than 109.5 degrees d) 120 degrees
Many animals depend on trees and bushes for: a)Shelter, b)Pollination, c)Seed Dispersal, d)Sunlight
Identify and describe the structure and function of specialised cells of protection, sensation and secretion in the integumentary system
What volume of 0.200 M HCl must be added to 250.0 mL of 0.300 M sodium mandelate (Ka for mandelic acid = 0.0004) to produce a buffer solution with a pH = 3.37
A concentration cell consists of two Sn/Sn2+ electrodes. The electrolyte in compartment A is 0.13 M Sn(NO3)2. The electrolyte in B is 0.82 M Sn(NO3)2.
An unknown metal M reacts with sulfur to form a compound with the formula MS. If 4.37 g of M reacts with 2.51 g of S, what are the names of M and MS. (Type your answer using the format iron(II) sulfide for FeS.)
The reaction, M2O3(s) + C(s) ? M(s) + CO2(g), is spontaneous at low temperatures but non-spontaneous at high temperatures. If we assume that, since the physical states do not change
you have 505ml of a .170m HCL solution and you want to dilute it to exactly .100M. how much water should you add?
a 10.00 ml sample of an unknown aqueous nickel ii solution was treated and found to produce 0.0532 g of nidmg2molar
viniger is made by adding 33 g of acetic acid to 625 g of water what is the percent by mass of acetic acid in the solution of viniger?
choose from among the following: disulfide bond, salt bridge, hydrogen bonding or dispersion forces. A) glutamic acid and lysine B) tyrosine and lysine C) Ile and Ala D) two cysteines
The standard free energy of activation of a reaction X is 89.4 kJ mol-1 at 298 K. Reaction Y is one million times faster than reaction X at the same temperature.
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