Hey Everyone,
>
> I was just working on the hw due tonight, and I was wondering if
> anyone had any suggestions on how to do the following problems,
>
> 1.) If a cow's body is 80% water, by mass, how many molecules of
> H20 are in a body weighing 468.18 kg?
>
> 2.)Iron is produced by the reaction of hematite, Fe2O3 with Carbon
>
> 2Fe2O3(s)+3C(gr) yields 4Fe(s)+3CO2(g)
>
> How many grams of C is consumed from 39.44gram of hematite?
>
> 3.)What is the total molar concentration of ions in 44.14mL of
> 0.271 M of AlCl3(a strong electrolyte) ?
>
> 4.) How many mililiters of 0.1411 M NiCl2 contain 6.7807 g of NiCl2?
>
> 5.)What mass of phosphoric acid, H3PO4, was produced by the
> reaction of 9.438g of elemental phosphorus, P4, with excess
> oxygen, if the percent yield is 85.821%?
>
> 6.)Chlorine is industrially prepared from sodium chloride by
> electrochemical decomposition. In the laboratory, however, it is
> convenient to prepare chlorine by heating hydrochloric acid(HCl)
> with pyrolusite (MnO2)
>
> 4HCl(aq)+MnO2(s) yields 2H20(l)+MnCl2(aq)+Cl2(g)
>
> How many grams of chlorine can be prepared by the reaction of
> 6.414g of HCl with 2.802 g of pyrolusite?
>
>
> Any suggestions would be really appreciated
>
>
> I was just working on the hw due tonight, and I was wondering if
> anyone had any suggestions on how to do the following problems,
>
> 1.) If a cow's body is 80% water, by mass, how many molecules of
> H20 are in a body weighing 468.18 kg?
>
> 2.)Iron is produced by the reaction of hematite, Fe2O3 with Carbon
>
> 2Fe2O3(s)+3C(gr) yields 4Fe(s)+3CO2(g)
>
> How many grams of C is consumed from 39.44gram of hematite?
>
> 3.)What is the total molar concentration of ions in 44.14mL of
> 0.271 M of AlCl3(a strong electrolyte) ?
>
> 4.) How many mililiters of 0.1411 M NiCl2 contain 6.7807 g of NiCl2?
>
> 5.)What mass of phosphoric acid, H3PO4, was produced by the
> reaction of 9.438g of elemental phosphorus, P4, with excess
> oxygen, if the percent yield is 85.821%?
>
> 6.)Chlorine is industrially prepared from sodium chloride by
> electrochemical decomposition. In the laboratory, however, it is
> convenient to prepare chlorine by heating hydrochloric acid(HCl)
> with pyrolusite (MnO2)
>
> 4HCl(aq)+MnO2(s) yields 2H20(l)+MnCl2(aq)+Cl2(g)
>
> How many grams of chlorine can be prepared by the reaction of
> 6.414g of HCl with 2.802 g of pyrolusite?
>
>
> Any suggestions would be really appreciated
>