Around what year did the global human population reach one

billion people?

The car wit fastest acceleration is the tempest. it has an acceleration of 6.1 m/s. suppose the car accelerates from rest to a final speed of 30. m/s. how long does it take the tempest to reach this speed?

Which of the following is produced when magnesium (Mg) combusts? A. CO2 B. MgO C. O2 D. H2O

A farmer has a large field with one type of crop. This area has high biodiversity. Agree Disagree

If the speed of an object increases, its kenetic energy

What is the effect on the outlet temperatures in both the hot and cold streams, when the surface area (length and diameter) is reduced? a - The outlet temperature of the cold stream decreases and the outlet temperature of the hot stream increases.

If you are eating a hamburger, it is an example of a consumer eating another consumer. a) true b) false

What mass of NaNO3 is needed to make 3.5 L of 2.2 M solution? (Na = 23.0g, N=14.0g, O=16.0g) Explain in steps

In which group do all atoms have seven valence electrons in the ground state?

What happens to a substance during a physical change?

4. Between a measuring sylinder and a pipette, which one would you use to measure volume of a solution to give smaller uncertainty range?