Name an element in the fourth period (row) of the periodic table with two 4p electrons.

Which changes will decrease the electric force between two positively charged objects? Check all that apply. moving them closer together moving them farther apart adding electrons removing electrons adding neutrons removing neutrons

Why are mixtures such as sugar and water not given chemical formula

Eisenhower, Kennedy, and Johnson all approved of the United States backing the South Vietnamese in their civil war. a. True b. False

Al poner en contacto vinagre y bicarbonato se desprende un gas, dióxido de carbono, y se forma una sustancia llamada acetato de sodio y agua, cuáles son los reactivos de la reaccion

When 1.104 grams of iron metal are mixed with 26.023g of hydrochloric acid in a coffee cup calorimeter, the temperature rises from 25.2 °C to a maximum of 33.5 °C. The reaction that occurs is given below.

Question 6 if a gas pressure gauge reads 32.0 psi, what is the pressure in inches of mercury? 165 in. hg 15.7 in. hg 65.1 in. hg 32.0 in. hg 6.19 in. hg

A line in the Brackett series of hydrogen has a wavelength of 1945 nm. From what state did the electron originate?

Convert 4.5 hours to seconds

Gasoline catches on fire is it flammability?

Enzymes are proteins that speed up chemical reactions in the body how do they work A. they increase the surface area of reactants B. they increase the concentration of reactants C. they decrease the concentration of products D. They act as reactants