A certain radioactive material has a half-life of 36 minutes. Starting with 10.00 grams of this material, how many grams will be left after 2 hours?

A) 1.00 grams

B) 1.5 * 10-4 grams

C) 3.33 grams

D) 0.25 gram

A car travels 30 km north in 25 min. and 40km east in 35 min. What is the total distance traveled?

What is true regarding methane and ammonia?

Hydrogen bonds can be found between molecules of which substance? NH3 H2 HI CH4

What type of matter is salt water?

Are carbohydrate and cholesterol element?

Which of the following choices are types of energy? (Select all that apply) cube energy visible energy nuclear energy kinetic energy

Hanna hypothesizes that granite is denser than sandstone. How can Hanna test her hypothesis?

It is possible to determine the environment of sedimentation for various sand dunes by

Which change results in the formation of different substances? (1) burning of propane (2) melting of NaCl (s) (3) deposition of CO2 (g) (4) solidification of water

Suppose that a solid cube of some material floats on the surface of an oil puddle at a service station with 75.1 % of its volume submerged. The density of the oil is 923 kg/m 3. What is the density of the cube's material