Someone sprays perfume in another room. It can be smelled a few minutes later.

Which process is this called?

A. mitochondria

B. active transport

C. osmosis

D. diffusion

Which of the following is/are part of the nitrogen cycle? eutrophication denitrification saturation all of the above

How is tarnishing different/similar to corrosion?

If a number is lass than 1 is the exponent positive or negative?

NF3 has three F atoms bonded to a central N atom, with one lone electron pair on the N. What is the shape of this molecule? O A. Tetrahedral O B. Trigonal planar O C. Bent O D. Trigonal pyramidal

A specific steroid has λmax = 259 nm and molar absorptivity ε = 11,500 l mol-1 cm-1. what is the concentration of the compound in a solution whose absorbance at 259 nm is a = 0.065 with a sample pathlength of 1.00 cm?

Consider the following thermochemical equation: C (s) + O2 (g) → CO2 (g) ΔH = - 393 kJ CO (g) + ½O2 (g) → CO2 (g) ΔH =

Two colorless solutions are mixed together. Bubbles form as the solution is stirred. Give TWO possible explanations for this result.

What is a light-year? A. the distance light travels in one earth year B. the distance light travels from the sun to the earth C. the distance light travels in one orbit of the moon D. the time it takes light to travel across the universe

What's is a logical way that you could begin to investigate why your tire had low air pressure?

after balancing the redox equation FeCl3+Zn--->ZnCl2+Fe, what are the coefficients, in order from left to right?