Who Organized elements into four groups based on properties:

When a field is declared static, there will be: A. a copy of the field in each class object B. only one copy of the field in memory C. a copy of the field for each static method in the class D. only two copies of the field in memory

2.6 g of oxygen gas react with excess hydrogen gas to produce 2.4 g water. What is the percent yield? A. 63% B. 83% C. 160% D. 46%

A container holds 800 mL of a gas at 25.0 C and 745 tore. What will be the volume of the gas of the pressure is increased to 790 torr and the temperature remains constant at 25.0C

What is emitted from most manufactured building materials and furniture?

Hydrocyanic acid (HCN) is a strong acid. In a water solution of this acid, which of the following would you expect to find more of

Halogens have ... Electron affinity

Observe: Change the Surface area from Minimum to Maximum. You can imagine that a solid reactant has been dissolved in a liquid. How does this change how many Reactant B molecules are exposed to Reactant A?

When placed in a 200-mL square box, a substance has a spherical shape and has a volume of 75 mL When placed in a 200-mL circular tube, the same amount of that same substance has a spherical shape and a 75-mL volume.

What is the example to the word camouflage

Given the reaction 2NaOH + H2SO4 = Na2SO4 + 2H2O, what is the total number of grams of NaOH needed to react completely with 196 grams of H2SO4