BACE exam questions with correct answers

4.651 x 10^4 written in expanded form is - Answer 46,510 What is 5.78 x 3.13, rounded to the correct number of significant digits? - Answer 18.1 What is 4.202 x 0.806, rounded to the correct number of significant digits? - Answer 3.39 How many grams is 2.6 kg? - Answer 2600 How many milliliters is 0.725L? Group of answer choices - Answer 725 Your supervisor provides you with a 1.0 mg/mL solution of Bovine Serum Albumin (BSA), and asks you to make a 5-step 2-fold serial dilution. What would be the dilution factor at step 3? - Answer 1:8 You are given a 5.0 mg/mL protein standard solution, and asked to prepare a 5-step, 2-fold serial dilution to create a standard curve. What is the final concentration of protein standard in mg/mL? Record the correct amount to three decimal places. - Answer 0.156 You are given a 5.0 mg/mL protein standard solution, and asked to prepare a 5-step, 2-fold serial dilution to create a standard curve. After the third step of the dilution, what is the concentration of the protein standard, in mg/mL? Record the correct amount to two decimal places. - Answer 0.63