What do you call the family of elements that takes up the column on the far right of the periodic table?

? noble gasses

? alkali metals

? halogens

What has 20 electrons in 44 Mass

Write a balanced equation to show the reaction of sulfurous acid with caesium hydroxide to form water and caesium sulfite.

What is the value for ∆Soreaction for the following reaction, given the standard entropy values? 2H2S (g) + SO2 (g) 3Srhombic (s) + 2H2O (g)

Classify each process as endothermic or exothermic ice melting

12. What is the completed balanced reaction for the decomposition reaction shown below? Ag₂O? A. Ag, Ag, + C. 2Ag, 0 - Ag, O, + 0, B. 2Ag, 0 - 4Ag + O, D. Ag, 0 - 2Ag + O

Four moles of hydrogen chloride (HCl) gas react with one mole of oxygen (O2) gas to produce two moles of chlorine gas (Cl2) and two moles of water gas (H2O).

The density of rubbing alcohol is 0.785g/mL at 25 Celsius. Calculate the mass of 15.0 mL of the rubbing alcohol.

Is the universe an isolated system?

1000ml of a gas is cooled from 500 K to 250 K, what is it's final volume? A. 250 ml B. 1000 ml C. 500 ml D. 750 ml E. 2000 ml

A reacton has a theoretical yield of 22.8g. When the reaction was carried out, 15.1g of the product was obtained. What is the percent yield?