Final answer:
To determine the actual weight of water dispensed, we need to measure its mass using a balance or scale. Weight is a measure of the force experienced by an object due to gravity and can vary depending on the gravitational field. By weighing the empty bottles and then filling them with water, the chemist can determine the actual weight of water dispensed by each machine.
Step-by-step explanation:
To determine the actual weight of water dispensed, we need to understand the concept of mass and weight. When we measure weight, we are actually measuring the force experienced by an object due to gravity. Bathroom scales, for example, measure the force exerted by an object on the scale. However, weight can vary depending on the gravitational field. On the other hand, mass is a measure of the amount of matter in an object and remains constant regardless of the gravitational field.
In order to determine the actual weight of water dispensed, we need to measure its mass using a balance or scale. For example, we can weigh an empty container, then fill it with water and weigh it again. The difference in weight between the two measurements will give us the weight of the water dispensed. It's important to note that weight is measured in newtons (or pounds), while mass is measured in kilograms.
In the specific case of the quality control chemist checking the accuracy of the machines, she could weigh the empty bottles, then fill them with water using each machine, and weigh them again. The difference in weight will give her the actual weight of the water dispensed by each machine. By comparing the actual weights to the intended weight of 10 ounces (296 mL), she can determine the accuracy and precision of the machines.