The following data are obtained in the laboratory: (a) The mass of a clean, dry 250ml beaker
(b) The mass of the same beaker containing an unknown quantity of calcium carbonate
The mass of the calcium carbonate is then obtained by subtracting (a) from (b). Which of the following will ensure the most accurate results?
Measurements should be taken using the same balance
The temperature of the room must remain constant
The barometric pressure should be recorded
O Calculations should be performed in your head

If 10.0 ml of the solution on the right are withdrawn from the 100 ml beaker and diluted again in a similar manner, what is the new concentration? m nacl

How does the digestive system interact with the circulatory system? a. messages sent as electrical impulses from the digestive system are transported throughout the body by the circulatory system. b. nutrients taken in and broken down by the digestive system are carried to various parts of the body by the circulatory system. c. nutrients and gases are absorbed by organs in the circulatory system. then, they are transported to all parts of the body by organs in the digestive system. d. oxygen and carbon dioxide are exchanged by organs in the digestive system, and the gases are carried to the rest of the body by the circulatory system.

How many moles of potassium hydroxide are needed to completely react with 2.94 moles of aluminum sulfate according to the following equation: