Help asap pls- brainliest and 20 points - A tank of gas has partial pressures of nitrogen and oxygen equal to 1.61 atm and 4.34 atm, respectively.

What is the total pressure of the tank?

The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false

Some familiar products contain some of the same types of atoms. for instance, the chemical formula for baking soda is nahco 3. the chemical formula for liquid bleach is naclo, and the chemical formula for table salt is nacl. which choice best describes why these three products have some of the same types of atoms in common?

What is the value of the standard enthalpy of formation of an element in its most stable form?