Element 1 has 1 valence electron, element 2 has 2 valence electrons, element 3 has 3 valence electrons, element 4 has 4 valence electrons, which is the least reactive? A. Element 1 B. Element 2 C. Element D. Element 4

Using the following balanced equation: 2 NaOH (aq) + H2SO4 (aq) → 2 H2O (l) + Na2SO4 (aq). How many grams of sodium sulfate will be formed if you start with 200 grams of sodium hydroxide and you have an excess of sulfuric acid?

Why does a 100 gram piece of wood float but a 100 gram piece of metal sink

What are the four classifications of matter? of those four, which two are pure substances?

What might have caused this canyon to form? A) winds blowing in zig-zag way B) frequent earthquakes in the area C) water breaking the rocks into pieces D) heavy rainfall flooding the part of the land

The carbon-magnesium bond in a Grignard reagent is covalent and highly-polarized such that the carbon is negatively charged. Which of the following statements can be used to describe the Grignard carbanion? Select all that apply.

Next to each formula, write the number of atoms of each element found in one unit of the compound

A particular atom has 58 protons and 82 neutrons. what are the atomic number, mass number, and periodic table symbol of this isotope?

Chemicals that are able to reduce activation energy in a reaction and speed the reaction rate are a. inhibitors. b. reactants. c. products. d. catalysts.

Lead had been used in plumbing and other products since ancient times. How have chemists contributed to our understanding of lead today? A. They have shown how lead can build up and cause damage in the human body. B.

When converting from moles to molecules OR molecules to moles you use what quantitative value?