12.5 grams of Hydrogen (H2) are placed in a balloon at STP (Standard Temperature and Pressure = 0º C & 101.3 kPa). Determine it's volume.
1. First, use molar mass as your conversion factor and cancel accordingly.
-> 12.5g of H2 x 1 mol
2.0g*
*The mass in grams is 2.0 because there are hydrogen is diatomic.
2. Next, use molar volume as your conversion factor and cancel accordingly.
-> 12.5g of H2 x 1 molx 22.4 L
2.0g 1 mol
3. Alter your answer to have the appropriate number of significant digits.
-> There are 1.4 x 10² Liters in 12.5 grams of Hydrogen.
1. First, use molar mass as your conversion factor and cancel accordingly.
-> 12.5
2.0
*The mass in grams is 2.0 because there are hydrogen is diatomic.
2. Next, use molar volume as your conversion factor and cancel accordingly.
-> 12.5
2.0
3. Alter your answer to have the appropriate number of significant digits.
-> There are 1.4 x 10² Liters in 12.5 grams of Hydrogen.
http://www.youtube.com/watch?v=_KD0Qc7Jf5k&feature=related
-Candace Chan
No comments:
Post a Comment