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A 5.30 sample of gold is heated from 20.0 c to 35.0 c as well as absorbs 2.07 j of heat. Find out the specific heat of gold.
A. 0.077 j /gc.
B. 10.6 j /gc.
C. 0.932 j/gc.
D. 0.0260 j/gc.
E. 30.1 j/gc.
The relative average molar mass of an element is known to be 151.965 g. Determine the abundance fraction of the isotopes whose fractions are not displayed in the table.
Calculate the concentration of CrO4^2- in a solution that is 0.0375M in chromic acid and 0.150M HCL. (Chromic acid is H2CrO4, a diprotic acid, Ka1= 1.80x10^-1, Ka2=3.20x10^-7 & Kw=1.00x10^-14).
The student puts the penny into hydrochloric acid, where the zinc (but not the copper) reacts with hydrochloric acid via a single replacement reaction. The hydrogen is collected at 25 degrees Celsius over water. The collected gas occupies 0.899L a..
If I add 1.65L to 112g of sodium acetate what is the molality of sodium acetate in the solution
Calculate the maximum non-expansion work that can be done on the surroundings from the combustion per kilogram of H2(g) at constant pressure and 298.15K.
Explain what is the mole fraction of methane in the mixture. Presume that the water produced by the combustion is in the gaseous state.
Write down a balanced chemical equation for polymerization of a w-hydroxy carboxylic acid (HORCO2H)
Compute the molarity of an acetic acid solution if 34.57 mL of these solutions are needed to neutralize 25.19 mL of 0.1025 M sodium hydroxide.
The conditions of a gas change in a steady flow process from 20 degrees C and 1000 kPa to 60 degrees C and 100 kPa. Devise a reversible nonflow process
A 25.0 mL sample of 0.20 mol L-1 HNO2(aq) is titrated with 0.20 mol L-1 KOH(aq) at 25oC. What is the pH AT THE Equivalence point?(FOR HNO2,Ka=4.50x10^-4 at 25oC)
The approximate bond angles between the atoms in a molecule with a trigonal planar electron pair geometry are
a 90.0ml sample of 1.00m naoh is mixed with 45.0ml of 1.00m h2so4 in a large styrofoam coffee cup the cup is fitted
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