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Gold sells for $1120/oz. One ounce is equal to 28.35g. The molar mass of gold is 196.97g/mol. 1 moldovian franc contains 0.567g of gold. If 1 franc = $1.42, how many atoms of gold are presents in 0.010 moldovian francs?
what mass in grams of hydrogen gas is produced if 20 mol of Zn are added to excess hydrochloric acid according to Zn+2HCl yields ZnCl2+H2?
Determine what is Δ[Br- ]/Δt If Δ[BrO 3 - ]/Δt = 0.018 M/s express your answer in M/s?
If a 220 mg piece of gold (density =19.32 g/cm^3) is hammered into a sheet measuring 2.3x1.0 ft, what is the average thickness of the sheet in meters?
Propose the kinds of attractive forces that might bind congo red to cotton fabric.
How do I calculate the product distribution calculations of the three peaks? Or the product ratios? The first peak was at 0.600, second at 0.95. Those are the retention times
The enthalpy of fusion of ethanol is 5.02 kJ/mol, and its enthalpy of vaporization is 38.56 kJ/mol.
Calculate the empirical formula for a chemical compound which gives the following analysis: 65.2 g scandium and 34.8 g oxygen.
If 200 g of water at 20 degrees celcius absorbs 41840 J of energy, what will its final temperature be
A voltaic cell is constructed with an Ag/Ag+ half-cell and a Pb/Pb2+ half-cell. Measurement shows that the silver electrode is positive. Write balanced half-reactions and the overall spontaneous reaction.
calculate the number of excess reagent units remaining when 188 PbS formula units and 279 O2 molecules react?
How much would the beaker and its content weigh if it was completely filled with mercury? The density of mercury is d = 13.5 g/mL ? = g
What is the average rotational energy assuming that only J=0 to 4 levels are populated in the vibrational ground state n=0?
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