Which of the following is an example of a pure substance?

Question 5 options:

A. air

B. salt water

C. granite

D. aluminum

Which element below is least reactive? helium oxygen fluorine nitrogen

A data table shows the heght of a person on his birthday each year ten years what is the independent varible

What is the molecular formula of CHN

Which group of atoms has this electron dot structure?

The atomic mass and abundance of Cr-50 is 49.946 amu and 4.3%. The atomic mass and abundance of Cr-52 is 51.941 amu and 83.8%. The atomic mass and abundance of Cr-53 is 52.941 amu and 9.5%. The atomic mass and abundance of Cr-54 is 53.939 amu and 2.

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

The mass flow rate of gasoline leaving a refinery is 1610 kg/min. The specific gravity of a gasoline is 0.700. A retail gasoline pump is able to fill a 20.0 gallon automobile tank in 1.80 minutes.

Calculate the solubility of cux (ksp=[cu2+][x2-]=1.27*10-36) in a solution that is 0.190 m in nacn.

An atom has seven valance electrons which element could have this type of atom