What 2 things make up pure substances?

What is the cost to drive 405 miles if the cost of gasoline is $3.08 per gal and the car makes 46 miles/gal of gas?

A student environmental group is creating a campaign for locally sourced energy resources. What would be best for them to feature in their campaign? A) a coal mine located in their county. B) a farmer with a field of solar panels.

3. Find the mass of 4.77 x 1022 atoms of scandium (Sc).

In calculating the concentration of [Cu (NH3) 4]2 + from [Cu (H2O) 4]2+, the stepwise formation constants are as follows: K1=1.90*104 K2=3.90*103 K3=1.00*103 K4=1.

How many quarts are in a 11.7-gal cooler of fruit punch?

The reaction of methane with water to form carbon dioxide and hydrogen is non - spontaneous at 298 k. at what temperature will this system make the transition from non-spontaneous to spontaneous? the data refer to 298 k.

The sedimentary rock formed when water deposits tiny particles of clay in very thin flat layers is called? a. gymsum b. shale c. limestone d. calcite

What change into velocity

Would you expect the h atoms to remain bonded to each other, or would the molecule fall apart?

Conductivity in a metal results from the metal atoms having (1) high electronegativity (2) high ionization energy (3) highly mobile protons in the nucleus (4) highly mobile electrons in the valence shell