True/False: A neutral atom contains the same number of protons as electrons

A container holds 7.5 liters of co2 at STP, how many moles of gas is this?

What genetic factor contributes to developing heart disease? a. ethnicity b. age c. stress d. diet

53. Which of the following is NOT a correct interpretation of CH2O, the formula of the compound formaldehyde? A CH2O is a molecular formula. B There are two grams of hydrogen for each gram of carbon in this compound. C CH2O is an empirical formula.

What is the chemical name of the covalent compound SF6? A. monosulfur hexafluoride B. monosulfide hexafluorine C. sulfur hexafluoride D. hexasulfur fluoride

What does it mean when a reaction reaches its equilibrium

One molecule of caffeine contains 8 atoms of carbon, 10 atoms of hydrogen, 2 atoms of oxygen, 4 atoms of nitrogen. write the formula for caffeine with the elements in the order they are given.

A piece of magnesium metal is heated in the presence of chlorine gas, and a reaction takes place. What compound will most likely be produced? A. Mg2C1 B. MgCl3 C. MgCl2 D. MgCI

What is the pressure of the gas in this mercury manometer if h = 81 mm and atmospheric pressure is 749 mmHg

A microscope containing two or more lenses is an

What word means the remains or imprint of once living organisms found in layer of rock