One exception to note: If the food's sitting in an environment where the temperature is over 90Â°F, the USDA says the food should only be left out for one hour, so keep an eye on the clock if you're serving food on a hot day!
Estimated cost of hydrogen per kilogram in a variety of scenarios. With all of this in mind, here are the cost estimates per kilogram (which each include $1.25 for taxes): Hydrogen from natural gas (produced via steam reforming at fueling station). $4 â $5 per kilogram of hydrogen.
multiply the total amount of fuel per month you burn by the cost of a gallon or liter of gasoline to get your monthly fuel costs if gas costs $ 4 per gallon $ 1 05 per liter you spend $ 128 per month on fuel or 17 cents per mile 10 cents per kmad divide vehicle operation costs $ 293 83 per month in our hypothetical scenario by the distance you drive per month 750 miles 1207 km in our example to calculate the cost per mile the cost per mile for this hypothetical driver and vehicle is 39 17 cents per mile or 24 cents per kilometer