A compound consists of 4.50 g of nitrogen for every 7.71 g of oxygen and has the same empirical and molecular formula identify the compound

Nickel has chemical symbol Ni and the atomic 28. How many protons, neutrons, and electronic would be found in an atom of nickel-78

A change of state requires the addition or removal of heat energy. True False

dimensional analysis: a room measures 775 cm x 1400 cm x 260 cm. the density of oxygen is. 001429 g/cm^3. how many kilograms of oxygen are present in the room

Which quantity is equal to one Au

A toothpick, pencil, and log are all the same type of wood. explain which would be most dense. answer

Element X has an electron configuration that ends with 5p6. Which of the following describes this atom correctly? a. unstable metal b. noble gas c. alkali metal d. unstable nonmetal

If 12.1 kilograms of al2o3 (s), 60.4 kilograms of naoh (l), and 60.4 kilograms of hf (g) react completely, how many kilograms of cryolite will be produced?

A certain ionic compound X has a solubility in water of 40.3 g/L at 20. degrees C. Calculate the mass X of required to prepare 500. mL of a saturated solution of X in water at this temperature.

IM ON A TIMER! What are the main types of star clusters? Check all that apply. binary eclipsing globular open wobbling

B) You have 665.46 grams of calcium chloride and 939.96 grams of aluminum carbonate available. Calculate the theoretical grams of Calcium carbonate using stoichiometric calculation.