Sue poured some sand into a pan. Which other item should sue add to the pan in order to model stream erosion?

A. An electric fan

B. A packet of grass seeds

C. A block of ice

D. A glass of water

At constant temperature, a sample of helium at 760. mmhg in a closed container was compressed from 5.00 l to 3.00 l, with no change in moles or temperature. what was the new pressure exerted by the helium on its container?

The electronegativity of germanium is 1.8; that of bromine is 2.8 on the Pauling scale. Will they form an ionic bond?

A hydraulic system lift has 2000N applied to an input piston that has an area of 50cm2. The output piston has an area of 200cm2 what is the pressure on the liquid by the input piston?

How are water-based solutions formed? A. Solutions are formed when the water's polar molecules separate the nonpolar molecules of the solute. B.

The tribute states of the ancient Aztec empire were governed directly by the emperor. made regular payments to the emperor. acted as powerful independent city-states. O surrounded the main Aztec city-state.

A compound is a pure substance. It can not easily be broken down into parts by physical means. A) True B) False

How do you use the periodic table to find the matter, number of subatomic particles, family name, reactivity, and number of valence electrons?

You see rainforests a is far as the eye can see It rains every day and the humidity is fiercel Where might you be? Polar climate Tropical climate Subtropical climate Temperate climate

What is the evaluation of 60.1 x - 9.2? (I pressed chemistry, but I ment to press mathematics, sorry!)

How can I calculate the percent concentration of solution? m solute = 15g m solution = 100g