The nitrogen content of a certain protein sample is 0.40 grams. How many grams of protein does this sample contain?
A、 2.00g;
B、 2.50g;
C、3.00g ;
D、6.25g
发布时间:2025-02-18 05:48:12
A、 2.00g;
B、 2.50g;
C、3.00g ;
D、6.25g