What 4 elements did people at ancient greek time believe that all matter is made up?

g Which compounds are bases in aqueous solution according to Brønsted-Lowry theory? A chain of four carbon atoms connected by single bonds. Single bonds connect the first carbon atom to 3 hydrogen atoms.

Write a word equation for 2ZnS (s) + 3O2 (g) - > 2ZnS (s) + 2SO3 (g)

How does changing electronegativity affect bond character?

Isotonic saline solution has a mass % nacl concentration of 0.900 %. assuming its density is 1.00 g/ml, what is its molarity a. 9.00 x 10-3 m b. 0.0900 m c. 0.154 m d. 0.900 m e. 1.80 m

Which of the following is a unicellular (one celled) eukaryote. Da bacteria human cells a paramecium archaea C Od

If your heart beats an average of 68 times per minute, how many times will your heart beat in an hour? In a day? In a week? Show all work

The gas described in parts a and b has a mass of 1.66 g. the sample is most likely which monatomic gas?

What is the oxidation number of N in NH4NO3

Aqueous magnesium chloride and hydrogen gas are produced when solid magnesium reacts with aqueous hydrochloric acid (hcl). what is the equation for this reaction?

What is ph? And explain where it can be used