What is the most accurate way to measure 50 mL of a liquid?  Make sure to mention the process and the           correct equipment.

You have to make a product that contains 20 doses of 2 mg/4 mL of morphine sulfate (soluble 1 in 21). Complete the working formula for this product, assuming the concentrated solution will be made in the smallest conical measure possible. Move an answer into each empty space. Ingredient morphine sulfate purified water formula quantity 2 mg to 4 mL measured quantity 25 mg x to 40 mL x concentrated solution morphine sulfate purified water 25 mg x to 5 mL x 100 mg x to 50 mL x 5 mL xaliquot of the concentrated solution will contain 25 mg x of morphine sulfate. 25 mg 30 mg 35 mg 40 mg 50 mg 100 mg 150 mg 200 mg 2 mL 4 mL 5 mL 7 mL 10 mL 15 mL 20 mL 30 mL 60 mL 70 mL 80 mL 90 mL

A chemist mixes 59.3 g of acetone with 97.8 g of 2-ethyltoluene and 47.1 g of isopropenylbenzene. Calculate the percent by mass of each component of this solution. Be sure each of your answer entries has the correct number of significant digits. component mass percent x10 % acetone 2-ethyltoluene isopropenylbenzene 0%

At 25°C the volume of a gas sample is 380 mL. To what temperature must the gas sample be heated so its final volume becomes 760 mL?   Can you type the solution and answer out? Thank you !