A japanese sword maker heats a mixture of iron and charcoal. he repeatedly heats, folds and flattens the mixture more than a thousand time. what is he doing

Which of the following is an essential condition for a redox reaction? a. The reactants should be two elements. b. The reactants should be two compounds. c. The oxidation state of all the atoms should change. d.

How are the layers of the atmosphere classified?

What does the rate of a chemical reaction describe?

Hydrogen Peroxide, H2O2, in the presence of a catalyst decomposes into water and oxygen gas. How many L of O2 at STP are produced from the decomposition of 34.0g of H2O2? A.) 1.00B.) 5.60C.) 11.2D.) 22.4

9.11 moles of vanadium to atoms

A whale is 24 meters long. A rhinoceros is 400 cm long. Which is longer? By how much?

Which statement is true about trends in metallic character? a) Metallic character increases as you go to the right across a row in the periodic table and as you go down a column.

How much energy is consumed by thawing 4.3 g ice? O A. 4.3 g x 1 mol/18.02 g 6.03 kJ/mol B. 4.3 g x 1 mol/18.02 g x 4.186 kJ/mol C. 4.3 g x 1 mol/18.02g x 40.65 kJ/mol D. 4.3 g x 1 mol/18.02 g * (-285.83) kJ/mol

Identify the product of radioactive decay and classify the given nuclear reactions accordingly.

Alkanes, alkenes, and alkynes are examples of A. aliphatic compounds B. aromatic compounds C. carcinogens