He baking soda looked like it dissolved in the vinegar. sarah and connor watched as the balloon expanded and filled with a gas. was this a physical or chemical reaction and why?

How do you figure out the molar mass of an element

What energy transformation occurs when a skydiver first jumps from a plane?

How many electrons are in an atom of chlorine with a - 1 charge? 17 16 18 8

An atom has a partially filled p sublevel. Which section of the periodic table contains this element?

Most of the heat from the sun that reaches Earth's surface is absorbed by the atmosphere. the oceans. manmade structures. land.

Is Fe a element or a compound? Is Aluminum a element or a compound? Is HCI a element or a compound? Is Hydrogen Peroxide element or a compound? Is H2 element or a compound? Is NaOH element or a compound?

Which of the following chemical reactions is an oxidation-reduction reaction? Answer WO3 + 3H2 W + 3H2O KNO3 + LiCl LiNO3 + KCl CaSO4 + 2NaCl Na2SO4 + CaCl2 Mg (NO3) 2 + 2HBr MgBr2 + 2HNO3 According to the collision theory and model created to

Which statements describes h20 (l) and h2o2 (l) A) both are mixtures that have different properties B) both are mixtures that have the same properties C) both are compounds that have different properties D) both are compounds that have the same

5.00 g of magnesium represents how many moles?

Enter your answer in the provided box. how many degrees of unsaturation are present in c7h8o?