Why might someone write their postcode on a tv or computer using a pen with fluorescent ink that is not visible in normal light?

The compound NaCl is an example of a (n) A. covalent compound B. ionic compound C. element D. molecule

Which of these accurately describes the reactants of a reaction? A. new substances formed in the reaction B. Substances that do not participate in a reaction C. Substances that are used up in a reaction D.

Zinc + lead (II) nitrate yield zinc nitrate + lead what's the chemical equation for this?

Compare nuclear fusion and fission in terms of what happens in the reactions, the types of atoms involved, the safety concerns associated with each, and the conditions necessary to start the reactions.

When a mixture of limestone and clay is heated in a rotary kiln cement is produced. Burning a mixture of methane and air heats the kiln. Carbon dioxide is one of the main gases give two reasons why.

Which of the following is a mixture? alcohol water mercury ink

A gas occupies 3.5 L at standard pressure. Find the volume of the gas when the pressure is 1.5 atm.

What is the temperature (in K) of 16.45 moles of methane gas in a 4.95 L container at 4.68 atm?

What do we call the process by which cells obtain the energy that they need?

Which of the following statements describes how the periodic table is organized? 1. The elements are organized alphabetically. 2. The elements are organized by their size. 3. The elements are organized by the date they were discovered. 4.