1 powder buttermik
No, you can substitute buttermilk for milk but not for baking powder.
Yes, you can use buttermilk with baking powder.
About 2 cups
There are 0 calories in Baking Powder...;)
100,000,000,000,000 pounds
Depends on the size of the barrel.
15-20 pounds or less.
From GourmetSleuth.com (see link to the left for an automatic converter):1 US quart of buttermilk weighs 980 grams, or 2.16 poundsSince there are 4 quarts in a gallon,1 US gallon of buttermilk weighs 3.92 kilograms, or 8.64 lbs(1 gallon of water weighs 8.34 lbs for comparison)
You must know the specific weight of that material. Powder sugar weighs much different to syrup.
by weighing powder.
1tbsp of cocoa powder = 6g I say it's 5.2 grams, according to wolframalfa computational search engine.