Cómo balancear una ecuación química

What are the components that makes up the layers of the Earth?

What are three colors I could shine on a red shirt to make it appear black?

Carbon-14 dating could be used to estimate the age of all of the following except A. fossils b. ancient scrolls c. petrified wood d. artifacts from the titanic ship

Which of the following changes has a decrease in entropy?. A. hg N2O4 (g) 2NO2 (g) B. 3O2 (g) + 2KCl (s) 2KClO3 (s) C. C2H5OH (l) + 3O2 (g) 2CO2 (g) + 3H2O (g) D. H2O (l) H2O (g)

How many moles is 145 liters of hydrogen gas at STP?

Explain why aluminum does not react with potassium nitrate (KNO3) although it reacts with copper nitrate.

During which step of meiosis do the homologous chromosomes line up in the middle of the cell? A. prophase I B. anaphase I C. telophase I D. metaphase I

The ionization constant for water (kw) is 9.311 * 10-14 at 60 °c. calculate [h3o+], [oh-], ph, and poh for pure water at 60 °c.

How much pv work is done in kilojoules for the reaction of 0.68 mol of h2 with 0.34 mol of o2 at atmospheric pressure if the volume change is - 4.1 l?

What is the volume of 0.05 mol of neón gas at STL