Question

In the first step of the experiment, students are told that the 50 milliliter graduated cylinder should be filled with 43 milliliters of a liquid mixture. Of the mixture, 30 milliliters should be water, and 13 milliliters should be of the unknown liquid. How many milliliters of each substance should be put in the graduated cylinder? Show all your calculations.

a) 30 milliliters of water and 13 milliliters of the unknown liquid
b) 43 milliliters of water and 30 milliliters of the unknown liquid
c) 13 milliliters of water and 30 milliliters of the unknown liquid
d) 43 milliliters of water and 13 milliliters of the unknown liquid

Answer 1

Fill the graduated cylinder with 30 milliliters of water and 13 milliliters of the unknown liquid to make a total of 43 milliliters for the experiment. Correct option is d) 43 milliliters of water and 13 milliliters of the unknown liquid

Step-by-step explanation:

In the first step of the experiment, you should fill the graduated cylinder with 30 milliliters of water and 13 milliliters of the unknown liquid to reach a total volume of 43 milliliters in the graduated cylinder. When measuring liquid volumes in a laboratory setting, it's important to use proper tools like a graduated cylinder and to make precise measurements.

For instance, when reading the volume from a graduated cylinder, you should observe the bottom of the meniscus, making sure to account for any uncertainty or graduation inaccuracies of the cylinder. Although not required for this specific question, when estimating volumes that fall between the marked graduations, make an educated approximation to the nearest tenth of a milliliter based on the position of the meniscus. Therefore, the correct answer is d) 43 milliliters of water and 13 milliliters of the unknown liquid.