If I have an unknown quantity of gas at a pressure of 1.2 atm, a volume of 31 liters, and a temperature of 87 °C, how many moles of gas do I have?

This is a characteristic of the elements in the periodic table that shows a pattern. it may increase or decrease across or down the table.

What state of matter is ice a. liquid b. element c. solid d. gas

What is conserved in the reaction shown below? h2(g) + cl2 (g) --> 2hcl(g)a. mass onlyb. mass and moles onlyc. mass, moles, and molecules onlyd. mass, moles, molecules, and volume