A football field is about 10000 cm long. If it takes a person 20 seconds to run its length, how fast was the football player running?

Which of the following statements are correct? Rewrite the incorrect statements to correct them. a) The atomic number always equals the number of protons. b) The atomic mass can be smaller that the atomic number.

Which major process involves the removal of water from intestinal contents?

What is the definition of titration

The illuminance on a surface is 6 lux and the surface is 4 meters from the light source. What is the intensity of the source? A. 24 candelas B. 144 candelas C. 72 candelas D. 96 candelas

Plants and animals are extremely complex structures. True or False?

Which of the following is true about a scientific hypothesis? A. The hypothesis must form a scientific theory. B. The hypothesis must be testable. C. The hypothesis must predict the outcome of the experiment. D.

Convert 1.76 um to inches

Why is lewis electron-dot diagrams more suitable than electron-shell diagrams illustrating chemical bonds

What mass of sodium benzoate should be added to 150.0 ml of a 0.15 m benzoic acid solution in order to obtain a buffer with a ph of 4.25? (assume no volume change.) ?

Match the term with its definition. A. Bed load A strip of land next to a river that is often very fertile B. Headwater The beginning of a river C. Suspended load Large boulders carried along by a river D.