250 grams = 8.8 grams, approx.
4.0833 gms
HI 100 gms of rice has a caloric value between 350 to 360 calories.
It is 430 gms per 20 cu.cm, which is generally reduced to 430/25 gm per 1 cu.cm, or 17.2 g/cm3 .
Let's assume that the density of marble is 2.76 gm/cm3. Marble varies somewhat in density depending upon the type of marble; so your marble may vary from this number. 0.75 inch X 1 square foot X 144 square inches/square foot = 108 cubic inches 2.76 gm/cm3 X 16.39 cm3/cubic inch X 108 cubic inches = 4886 gms 0.00220 pounds/gm X 4886 gms = 10.7 pounds
About 550kgs
Kit cars, i;e. Caterham, replica's. .etc
That is 227 grams.
0.4
440 gms
That is 2.028 cups
0.006 gms
200mg = 0.2g
25 lb = 11339.809 g
0.1749 kg
16 gms
That is 2 teaspoons.