To start a stoichiometry problem I need to write and balance the chemical equation for iron sulfate (FeSO4) and potassium dichromate (K2Cr207). I don‘t know what compounds will result. This is the question if anybody cares:A 3.33 gram sample of iron ore is transformed to a solution of iron (II) sulfate, and this solution is titrated with 0.150 M potassium dichromate. If it required 41.4 mL of potassium dichromate solution to titrate the iron (II) sulfate solution, what is the percentage of iron in the ore?
Some pretty good arguments.
CPVC (plastic) is by far easier to install and is less expensive (especially with the cost of metals right now). Personally, I prefer copper because it is more rigid. If you go with a metal system, by code you need to ground the pipe to the electric system, a jumper (a wire) connecting the hot and cold pipes at the water heater, and a jumper at the water meter. The wire I have used for jumpers is #6 bare copper.
Copper is the best but very expensive now. PVC is not allowed in all areas and I have not seen anywhere that allows PVC for hot water lines. It must be CPVC. The newest piping is PEX. It is easy to install, fairly cheap and can be snaked into areas where hard pipe would be difficult or impossible. The tool for installing PEX is expensive so you may want to rent it. Make sure it has been calibrated before taking it home.
Some pretty good arguments.
6 FeSO4 + K2Cr2O7 + 7 H2SO4 3 Fe2(SO4)3 + K2SO4 + Cr2(SO4)3 + 7 H2O find moles 0.0414 litres 0.150 mol/litre 0.00621 moles K2Cr2O7 by the equation 6 FeSO4 + K2Cr2O7 + 7 H2SO4 .00621 moles K2Cr2O7 reacts with 6 times as many moles of FeSO4 0.03726 moles FeSO4 0.03726 moles FeSO4 has within it an equal number of moles of Fe+2 0.03726 moles Fe+2 using molar mass 0.03726 moles Fe 55.85 g/mol 2.081 grams of Fe what is the percentage of iron in the ore? 2.081 g Fe / 3.33 g sample 62.49 % Fe your answer rounded to 3 sig figs is 62.5 % Fe
Copper is the best of the best. I will never rust. Though it is the most expensive. Plastic is weak and may cause problems down the road Galvanized is ok. I will last for MANY years. What you have think of when choosing one isWill I outlive the plumbing. is the value of the house going to encrease if I sell
6 FeSO4 + K2Cr2O7 + 7 H2SO4 3 Fe2(SO4)3 + K2SO4 + Cr2(SO4)3 + 7 H2O find moles 0.0414 litres 0.150 mol/litre 0.00621 moles K2Cr2O7 by the equation 6 FeSO4 + K2Cr2O7 + 7 H2SO4 .00621 moles K2Cr2O7 reacts with 6 times as many moles of FeSO4 0.03726 moles FeSO4 0.03726 moles FeSO4 has within it an equal number of moles of Fe+2 0.03726 moles Fe+2 using molar mass 0.03726 moles Fe 55.85 g/mol 2.081 grams of Fe what is the percentage of iron in the ore? 2.081 g Fe / 3.33 g sample 62.49 % Fe your answer rounded to 3 sig figs is 62.5 % Fe
Copper is the best of the best. I will never rust. Though it is the most expensive. Plastic is weak and may cause problems down the road Galvanized is ok. I will last for MANY years. What you have think of when choosing one isWill I outlive the plumbing. is the value of the house going to encrease if I sell
CPVC (plastic) is by far easier to install and is less expensive (especially with the cost of metals right now). Personally, I prefer copper because it is more rigid. If you go with a metal system, by code you need to ground the pipe to the electric system, a jumper (a wire) connecting the hot and cold pipes at the water heater, and a jumper at the water meter. The wire I have used for jumpers is #6 bare copper.
Copper is the best but very expensive now. PVC is not allowed in all areas and I have not seen anywhere that allows PVC for hot water lines. It must be CPVC. The newest piping is PEX. It is easy to install, fairly cheap and can be snaked into areas where hard pipe would be difficult or impossible. The tool for installing PEX is expensive so you may want to rent it. Make sure it has been calibrated before taking it home.
