Is biting an apple a physical or chemical change?

What is the value of kc for the decomposition of hi at 623 k?

The gas in a cylinder has a volume of 8 liters at a pressure of 104 kPa. The pressure if the gas is increased to 200 kPa. Assuming the temperature remains constant, what woyld the new volume be?

What is the difrense between soft water and hard water?

Metamorphic rocks that don't have layers true or false

How many moles of solute are dissolved in 6.5 L of a solution that has a molarity of 4.8 M? 31 moles 1.4 moles 0.74 moles

How does the conservation of matter relate to balancing equations?

Ethanoic acid and 1-butanol can react to produce water and a compound classified as an 1) aldehyde 2) amine 3) ester 4) halide

Sodium metal reacts with water to form aqueous sodium hydroxide and hydrogen gas. which equation below best describes the balanced equation for this reaction?

2H2 + O2 - - > 2H2O If 16 mol of oxygen were reacted with excess hydrogen gas, how many moles of water would be produced?

Which subatomic particle identifies an atom as that of a particular element? how is this particle related to the atoms atomic number