Homework Help Forum: 10th grade chemistry

Posted by katie on Monday, April 6, 2009 at 6:44pm.

How many molecules of Hydrogen gas formed when 48.7 grams of sodium added to water

• 10th grade chemistry - bobpursley, Monday, April 6, 2009 at 6:49pm

  write the balanced equation: 2Na+2HOH>>2NaOH + H2 which means find the moles of Na used (in 48.7g), divide those moles by two, and that is the moles of H2. For molecules, then multiply that by Alvarado's number

  
  

• 10th grade chemistry - Anonymous, Thursday, August 20, 2009 at 4:13pm

  why would a firefighter or a reporter need to understand chemistry?

  
  

• 10th grade chemistry - katelynne, Friday, August 28, 2009 at 8:42pm

  How would you calculate the numher of nanometers in 8.1 cm?

  
  

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