Which phrase best describes a chemical reaction? A. mixing two substances B. the combustion of a substance C. forming or breaking bonds D. the decomposition of particles

How many total atoms are in 0.170 g of p2o5?

How many molecules are in 4.62 moles of nitric acid (HNO3) ?

How is the ionization energy trend in the period

Someone at the Home Depot tells you that a 2 bolt is 6.75 times as heavy as a washer. What would be the mass of a box of such bolts

What is the electron geometry (or electron arrangement) around an atom in a molecule or ion which is surrounded by one lone pair of electrons and four single bonds. a. trigonal bipyramidal b. see-saw or distorted tetrahedron c. t-shaped d. linear e.

Where should you keep your glass of soda if you want it to remain fizzy

Why do the atoms in a piece of copper metal have no net charge? -The charges of the positive and negative copper ions cancel each other out. -The number of electrons surrounding each copper nucleus doesn't change.

In a closed system, the total heat given off by warmer substances equals the total heat energy gained by cooler substances (qwater = - qliquid).

What compound will not give oxygen on heating

Choose one property of water that makes it unique. Describe the property and explain the chemical or physical?