A handful of sand weights 208g and it displaces volume of 80ml of water. ehat is its density?

Indicate the type of hybrid orbitals used by the central atom in BrF3. A) sp B) sp3d C) sp3 D) sp2 E) sp3d2

The following questions involve the quantities of some materials you will be using in the calorimetry lab. Keep a copy of your answers, so you will not have to recalculate them in the lab.

The elements nitrogen and oxygen are diatomic gases in their standard states. Therefore, the standard enthalpies of formation of these elements are zero.

1. a chemical bond formed by the electrostatic attraction between ions covalent bond 2. a chemical bond formed by two electrons that are shared between two atoms energy level 3. the orbitals of an atom where electrons are found ionic bond 4.

What is the force of a 10 kg. and its velocity is 2m/s

What is a example of a population

Which of the following statements holds true for a chemical change? OA In a chemical change, no new substance is formed. B. In a chemical change, a substance changes its phase. oc. In a chemical change, the molecular structure of a substance changes.

What is the name of the branch of science that specifically studies the conversion of chemical energy to electrical energy and vice versa? biochemistry electrochemistry organic chemistry thermodynamics

What is the symbol for heat

When a single 1-gram piece of zinc is added to 3 M hydrochloric acid at 25°C, the reaction is slow. Which procedure would most likely increase the rate of the reaction if the reaction were repeated? A. using 1 gram of powdered zinc B.