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How do you find the atomic mass of an element? How do you find the atomic number of an element?
What is the formula that relates the temperature change obsereved in a substance with the energy released or abosrbed? when you measure a temperature rise during a chemical reaction, is the reaction endothermic or exothermic?
the tosylate of 2s3r-4-methyl-3-phenylpentan-2-ol undergoes an e2 elimination on treatment with sodium ethoxide. draw
Identify the missing particle in the following equation: 238:92 U --> 4:2 He + ? a) 242:94 Pu b) 234:90 Th c) 242:90 Th d) 234:92 U E) None of these
The splitting pattern of interest contains a quartet at 4.06 ppm and a triplet at 1.24 ppm. What common alkyl group is responsible for this splitting pattern
A certain atom is bombarded with a neutron and changes into Lithium 7. What was that atom? (It is a fission reaction)
a1.15 g sample of dry ice is added to a 765 ml flask containing nitrogen gas at a temperature of 25.0 c and a pressure
Calculate the theoretical yield of C2H5Cl when 139 g of C2H6 reacts with 232 g of Cl2 , assuming that C2H6 and Cl2 react only to form C2H5Cl and HCl .
what volume is mililiters of nitrogen n2 would have to be collected at 0.978 atm at 28.0 degrees c to have a sample
polonium-218 is an alpha emitter with a half-life of 3.0 minutes. if a sample contains 55 mg of po-218 atomic mass
Problem- Gastric juice is made up of substances secreted from parietal cells, chief cells, and mucous-secreting cells. The cells secrete HCl, proteolytic enzyme zymogens, mucin, and intrinsic factor.
What volume, in liters, of O2 at 35°C and 1.19 atm can be produced from the decomposition of 10.0 g KNO3? 2 KNO3(s) → 2 KNO2(s) + O2(g)
The bottle is brought outside and stored at 0.0°C. (See Table 5.2) (a) What mass of water condenses inside the bottle? _______g (b) Would water condense at 10 degrees C?
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