How many moles of co2 can be produced
Calcium carbonate (FW = 100.09) reacts with hydrofluoric acid HF to form CaF2:
CaCO3(s) + 2 HF ------> CaF2(s) + H2O(l) + CO2(g)
Starting with 50.0 g of CaCO3(s) and 100 mL of 1 M HF, how many moles of CO2 can be produced?
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particular sample of pure iron requires 0.595 kJ of energy to raise its temperature from 25oC to 45oC. The specific heat of iron is 0.45 J/g oC. What must be the mass of the sample?
Bone was dissolved in hydrochloric acid, giving 45.0 mL of solution containing calcium chloride, CaCl2. To precipitate the calcium ion from the resulting solution, an excess of potassium oxalate was added. The preciCaC2O4, weighed 1.437 g. What was
A 25.0 mL sample of river water was titrated with 0.00100 M Na2Cr2O7 and required11.5 mL to reach the end point. What is the COD, in mg O2 per litre of the sample?
How would I convert Multisim a circuit that will convert that 0-10VDC signal into a 4-20mA signal for the long haul. And then convert that 4-20mA signal, back into a 0-5V DC signal?
You design a receiver for the 5.8ISM band, using the ZJL-6G+ Minicircuits. It is not correctly matched, with Z0 = 30ohm at +60 degrees. Find S11 from the data sheet at that frequency, noise figure, degradation of NF, system gain, system NF, e
The solubility of Zn(OH)2 is 2.0 x 10-6 M at a certain temperature. Determine the value of the Ksp at this same temperature.
A 0.100L sample of a solution containing an unknown concentration of sodium hydroxide requires 22.7 ml of 1.00 M sulfuric acid to completely neutralize. What is the concentration of the sodium hydroxide solution?
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