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For the structural stone marble, the specific heat is 0.858 J/g*degrees C. How much heat is absorbed by a 35 g sample of marble if its temperature is raised from 27 degrees C to 55 degrees C?
Substances A, B, and C can all act as oxidizing agents. In solution, a is green, B is yellow, and C is red. In the reactions in which they participate, they are reduced to A^-, B^-, and C^- ions, all of which are colorless.
When 27 mL of a 230 mL stock solution containing 2.2 M BaF2 is diluted to 81 mL, what is the concentration of F- in the new solution?
This given reaction: 2 O3(g) -→ 3 O2(g) has an empirically determined rate law (with a single unimolecular event). Determine what is the observed rate If k =4.0 × 105s-1, [O2] = 0.2M and [O3] = 0.5 M?
A mixture of fuel containing 0.530 mol CH4/mol, 0.330 mol C3H8/mol, and 0.140 mol C5H12/mol at 60.0°C and 125 kPa (gauge) enters a furnace at a rate of 91.0 L/min where it reacts with 17.4% excess air.
Hypotonic solutions cause red blood cells to A. shrivel B. burst C. no effect on red blood cells
A Gouy balance is used to determine the magnetic susceptibility of a substance. A strong electromagnet is placed next to the sample, which is on a balance.
65.50 ml of 0.161 m hf is titrated with 0.1200 m naoh. what is thenbsp ph after 65.50 ml of base have been added? ka
The dried precipitate weighs 10.3g. Calculate the amunt of MgCl2 in the original sample (in weight percent).
considering the given thermochemical equation 2nog o2g rarr 2no2g in which ?hdeg is given -114.4 kj then determine
The decomposition of N2O to N2 and O2 is a first- order reaction. At 730°C the half-life of the reaction is 3.58 3 103 min. If the initial pressure of N2O is 2.10 atm at 730°C, calculate the total gas pressure after one half-life.
When 3-methyl-2-pentene is treated with mercuric acetate, Hg(O2CCH302, in a THF-ethanol mixture and the resulting product reacted with NaBH4 in basic solution, the principal product formed is which of these
A cylinder, with a piston pressing down with a constant pressure, is filled with 2.00 of a gas (), and its volume is 42.0 (). If 0.500 of gas leak out, and the pressure and temperature remain the same, what is the final volume of the gas inside th..
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