If the nucleus of an atom contains 12 protons how many electrons are there in a neutral atom

What is the true, molecular formula of a compound with the empirical formula C13H19O2 and molar mass of 414.64g?

Match the chemical reactions. 1. molecules rearrange and form new molecules decomposition 2. simultaneous decomposition and synthesis exchange 3. bonds broken and elements released synthesis 4. molecules formed from components reversible

Which of the following processes will determine the number of moles in a sample? Dividing the mass of the sample by Avogadro's number Multiplying the mass of the sample by Avogadro's number Dividing the number of molecules in the sample by

An engineer is trying to create a fast reaction in a fuel mixture. which should she do

What pH must organisms maintain

Gamma rays are waves of energy that have no charge. true false

Describe what a polar covalent bond is and name a common compound that has a polar covalent bond holding it together

Part a:we can determine the purity of solid materials by using calorimetry. a gold ring (for pure gold, specific heat = 0.1291 j⋅g-1⋅k-1) with mass of 10.5 g is heated to 78.3 ∘c and immersed in 50 g of 23.

How has desertification impacted the environment in Latin America?

In a titration experiment, hcl and lioh solutions were used. the initial volume of hcl was 1.25ml and lioh was 2.65 ml. the final volume of hcl was 13.60 ml and lioh was 11.20 ml. if the lioh was 0.140 m what was the molarity of hcl?