Which are homogeneous mixtures? check all that apply

Which of the following is the current, accepted model of the atom? plum pudding model Rutherford-Bohr model wave mechanical model A metal and a non-metal typically form covalent compounds.

Boyle's Law represents the relationship of volume as pressure changes. The constants of Boyle's Law are: a. pressure and number of molecules of gas b. volume and temperature c. pressure and temperature d. temperature and number of molecules of gas e.

How much ice (in grams) would have to melt to lower the temperature of 354 ml of water from 26? c to 6? c? (assume the density of water is 1.0 g/ml.) ?

Hydrocarbons are composed of the elements (1) carbon and hydrogen, only (2) carbon and oxygen, only (3) carbon, hydrogen and oxygen (4) carbon, nitrogen and oxygen

Stoichiometric amounts of nitrogen gas and hydrogen gas react in a calorimeter to produce 5.00 g of ammonia gas. the calorimeter temperature rises 0.42°c. the calorimeter and water have a combined heat capacity of 32.16 kj/k.

An organic compound contains C=61%, H=11.8% and O=27.12%. Calculate the empirical formula and molecular formula of the compound. The vapour density of the compound is 59.

Roberto throws a tennis ball to a friend. He then throws a baseball with the same amount of force. Which ball is accelerated more? Why?

How does parsec compare to light year

A sample of solid NH4NO3 was placed in an evacuated container and then heated so that it decomposed explosively according to the following equation: NH4NO3 (s) N2O (g) + 2H2O (g) At equilibrium, the total pressure in the container was found to be 2.

Look at the chemical formula for glucose, how many carbon C, hydrogen H, and oxygen O, atoms are found in a molecule of glucose?