Using Biest 2 mg estriol per 0.2 mL to prepare 100 mL, how much estriol and estradiol should be weighed? Note: final conversion is 1.033.

Prepare for the Curexa Certification Exam with engaging quizzes featuring flashcards and multiple choice questions. Enhance your understanding with detailed explanations for each question and ensure your readiness for exam success!

Multiple Choice

Using Biest 2 mg estriol per 0.2 mL to prepare 100 mL, how much estriol and estradiol should be weighed? Note: final conversion is 1.033.

The calculation hinges on scaling a fixed ratio from a small amount of Biest to a 100 mL final volume. Biest is typically used in an 80/20 ratio of estriol to estradiol by weight. So per 0.2 mL of Biest, you have: - Estriol: 2 mg × 80% = 1.6 mg - Estradiol: 2 mg × 20% = 0.4 mg To make 100 mL, multiply these amounts by the scale factor 100 / 0.2 = 500: - Estriol needed = 1.6 mg × 500 = 800 mg = 0.8 g - Estradiol needed = 0.4 mg × 500 = 200 mg = 0.2 g The note about a final conversion of 1.033 adjusts the estradiol figure for density considerations, giving: 0.2 g × 1.033 ≈ 0.2066 g → rounds to 0.21 g Thus you weigh about 0.8 g of estriol and 0.21 g of estradiol to prepare 100 mL.

The calculation hinges on scaling a fixed ratio from a small amount of Biest to a 100 mL final volume.

Biest is typically used in an 80/20 ratio of estriol to estradiol by weight. So per 0.2 mL of Biest, you have:

  • Estriol: 2 mg × 80% = 1.6 mg

  • Estradiol: 2 mg × 20% = 0.4 mg

To make 100 mL, multiply these amounts by the scale factor 100 / 0.2 = 500:

  • Estriol needed = 1.6 mg × 500 = 800 mg = 0.8 g

  • Estradiol needed = 0.4 mg × 500 = 200 mg = 0.2 g

The note about a final conversion of 1.033 adjusts the estradiol figure for density considerations, giving:

0.2 g × 1.033 ≈ 0.2066 g → rounds to 0.21 g

Thus you weigh about 0.8 g of estriol and 0.21 g of estradiol to prepare 100 mL.

More practice questions