Posted by Brittany on Monday, October 26, 2009 at 7:39pm.
This is a limiting reagent problem.
1. Write the equation and balance it.
SrH2 + 2H2O ==> Sr(OH)2 + 2H2 Check me out on that.
2a. Convert 3.78 g SrH2 to moles. moles = grams/molar mass.
2b. Convert 3.5 g H2O to moles.
3a. Using the balanced equation, convert moles SrH2 to moles H2.
3b. Using the balanced equation, convert moles H2O to moles H2.
3c. You have two answers for the same product and one of them MUST be wrong. The correct one, as in ALL limiting reagent problems, is the smaller one. The reactant producing that smaller number is the limiting reagent.
4. The moles from 3c x molar mass = grams produced.
Related Questions
chemistry - Alkali metals react with water to form hydrogen gas and the ...
chemistry - Sodium metal and water reacts to form hydrogen and sodium hydroxide...
Chemistry - I need help classifying these as physical and chemical properties! 1...
Chemistry - Hydrogen gas dissolves in palladium with the hydrogen molecules ...
chemistry - Lithium metal dissolves in water to yield hydrogen gas and aqueous ...
college chemistry - Lithium metal decomposes in water and releases hydrogen gas...
Chemistry - A 0.0677g sample of magnesium metal reacted with excess hydrochloric...
Chemistry Help!! - sodium metal reacts violently with water to produce aqueous ...
science - hydrogen and oxygen combine in the ratio of 1:8 by mass to form water....
Chemistry - A 0.188g sample of unknown metal, X (s), produced 71.4 ml of ...
For Further Reading
