Can't buy hydrogen by the gallon
Just about 10.68 pounds per gallon.
13.5 lbs. per Imperial Gallon / 11.86 lbs per US Gallon.
10.3 lbs
== Probably close to the weight of water. 8.34 lbs per gallon.
About 115K BTU per gallon.
around $3.00 per gallon in California, even though there is only 20 gas stations over there! :-)
It cost $1.34 per gallon.
$3.50-$4.00 per gallon
Tap water does not cost very much per gallon in Michigan. You can purchase it in grocery stores under $3 per gallon.
$7.25 per gallon.
At 30 miles per gallon, it would cost $29.25.
$2.59 per gallon.
8.67 lbs per gallon
18 cents per gallon
About $8.00 per gallon.
$5
$113.63/4 = $28.41 per gallon.