Question

In: Mechanical Engineering

Metal hydrides are metal alloys that can store significant quantities of hydrogen in their atomic lattice....

Metal hydrides are metal alloys that can store significant quantities of hydrogen in their atomic lattice. For this reason, they are considered potentially attractive for the on-board storage of hydrogen for hydrogen fuel cell vehicles. A certain metal hydride alloy can store 2 wt% hydrogen and has a density (including the hydrogen) of 12 g?cm3. Treating hydrogen as an ideal gas, what pressure would beneeded tocompressgaseous hydrogen tothesameequivalent concentration thatit attains when absorbed in the metal hydride?

Solutions

Expert Solution


Related Solutions

Metal hydrides react with water to form hydrogen gas and the metal hydroxide. Use significant figures....
Metal hydrides react with water to form hydrogen gas and the metal hydroxide. Use significant figures. SrH2(s) + 2 H2O(l) Sr(OH)2(s) + 2 H2(g) You wish to calculate the mass of hydrogen gas that can be prepared from 4.71 g of SrH2 and 4.26 g of H2O. (a) How many moles of H2 can be produced from the given mass of SrH2? (b) How many moles of H2 can be produced from the given mass of H2O? (c) Which is...
In the ground state of atomic hydrogen the electron can be pictured as existing some- where...
In the ground state of atomic hydrogen the electron can be pictured as existing some- where within a distance ∆x from the position of the nucleus with ∆x interpreted as the uncertainty in the position of the electron. (a) If ∆x is taken ot be the Bohr radius, calculate the uncertainty in the momentum of the electron. (b) If the uncertainty relation is written as rp = h(bar)?, the energy of the hydrogen atom can be expressed by E(p)=(p^2/2m)-(e^2p/h) Calculate...
Hydrogen gas can be produced by the reaction of iron metal with steam, as shown in...
Hydrogen gas can be produced by the reaction of iron metal with steam, as shown in the equation below: 3 Fe (s) + 4 H2O (g) à Fe3O4 (s) + 4 H2 (g) If 40.00 g of iron are combined with 40.00 g of steam and reacted, calculate (i) how many grams of hydrogen gas will be formed and (ii) how many grams of the excess reagent will remain after the end of the reaction.
Pure iron metal can be produced by the reduction of iron(III) oxide with hydrogen gas. (a)...
Pure iron metal can be produced by the reduction of iron(III) oxide with hydrogen gas. (a) Write the expression for the equilibrium constant (Kc) for the reversible reaction Fe2 O3(s) + 3H2(g) ⇌ 2Fe(s) + 3H2 O(g) ΔH = 98.7 kJ b) What will happen to the concentration of each reactant and product at equilibrium if more Fe is added? c) What will happen to the concentration of each reactant and product at equilibrium if H2O is removed? d) What...
Can green hydrogen play a significant role in stopping or at least slowing down global warming?  global...
Can green hydrogen play a significant role in stopping or at least slowing down global warming?  global warming (also called climate change); pollution and its role in pushing investment in renewable energy; the amount of money likely to be in play; government regulations—national, state/regional, or municipal--and subsidies which may favor (or disadvantage) investment in renewable energy; the potential in particular countries, including developing countries, for investment in green hydrogen; comparative costs of renewable and fossil fuel technologies; the element of belief,...
Hydrogen gas can be prepared by reaction of zinc metal with aqueous HCl: Zn(s)+2HCl(aq)→ZnCl2(aq)+H2(g) How many...
Hydrogen gas can be prepared by reaction of zinc metal with aqueous HCl: Zn(s)+2HCl(aq)→ZnCl2(aq)+H2(g) How many liters of H2 would be formed at 636 mm Hg and 17 ∘C if 27.0 g of zinc was allowed to react? How many grams of zinc would you start with if you wanted to prepare 6.85 L of H2 at 284 mm Hg and 28.5 ∘C?
Hydrogen gas can be prepared by reaction of zinc metal with aqueous HCl : Zn(s)+2HCl(aq)→ZnCl2(aq)+H2(g) 1)How...
Hydrogen gas can be prepared by reaction of zinc metal with aqueous HCl : Zn(s)+2HCl(aq)→ZnCl2(aq)+H2(g) 1)How many liters of H2 would be formed at 592 mm Hg and 17 ∘C if 25.5 g of zinc was allowed to react? 2)How many grams of zinc would you start with if you wanted to prepare 4.60 L of H2 at 294 mm Hg and 34.5 ∘C ?
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT