If human urine is 1.8 percent urea how many grams of urea are present in 50 ml of urine?
To calculate the grams of urea in 50 ml of urine where 1.8% is urea, first convert the ml to grams using the density of urine (about 1 g/ml). Then, multiply the volume of urine in grams by the percentage of urea (0.018) to find the grams of urea present in 50 ml of urine.