Is pure air an element or a compound?

During a solar flare, it is most likely that

All parts of the nervous system except of the brain and spinal cord makes up the a. Central nervous system b. Peripheral nervous system c. muscular system d. Nerve

True or false the first species to colonize newly exposed land are called primary species?

Describe Dalton's atomic theory.

What is the ph of 0.11 m diethylamine, (ch3ch2) 2nh, (kb = 8.6 * 10-4) ?

Which best explains why astronauts appear weightless when they are in a space shuttle orbiting Earth? • They are falling toward Earth at the same rate as the space shuttle.

If increase the amplitude how does the velocity change? (No google)

What is the result of multiplying (2.5 * 1010) * (3.5 * 10-7) ? Use the correct number of significant digits.

What is 0.002353 to two significant figures

10. Is the identity of an element determined by its mass number or atomic number? By omak