What will the volume of the helium be when the balloon rises to the point where the atmospheric pressure is 380 mmHg? Assume that the temperature and amount of the helium remain unchanged. Express your answer to two significant figures and include the appropriate units.

What is bromine+calcium iodide--> calcium bromide +iodine balanced

In an experiment, 45g of silicon tetrachloride are treated with 45ml of water. what is the theoretical yield in grams of hcl

Use the drop-down menus to label each of the following changes p for physical change and c for chemical change. the substance changes to a new substance. the original substance can be recovered. the color changes. gas is produced and given off. the substance changes size, shape, or volume.