Which of these is a mixture?

A) air

B) water

C) vinegar

D) carbon dioxide

The same force is used to kick both of these objects below. Which will have greater acceleration? Bowling ball Soccer Ball They will accelerate the same Neither will accelerate

A 50.0 mL sample of 6.0 M HCl was diluted to a final volume of 250.0 mL What was the new molarity?

How many atoms of barium are found in 2 NH4Br

How does one determine the number of core electrons an atom has?

4 Lef's say you find a fossil in a layer of shale. How might you determine the age of the shale?

The temperature reading of - 14°C corresponds to a Kelvin reading of: -287 K. 287 K. 297.6 K 259 K.

If element X consists of 64.6% of atoms with a mass of 34.0 u, 18.2% of atoms with a mass of 35.0 u, and 17.2% of atoms with a mass of 36.0 u, what is the average atomic mass of element X to the nearest hundredth?

Water has a K, value of 1x 10-13 1x 10-10 1x 10-15 1x 10-14

What evidence do scientists use to explain how the solar system formed? A) All the planets were a result of solar flares from the sun. B) All the planets are made of the same material, mainly helium.

Ta, Os, Th are from metal?