True or false. Steel is an example of a pure substance because it is made up of two different metals melted together.

What is the frequency of a wave with a wavelength of 6.40x10^4 meters?

Six fingered offsprings are formed from normal fngered parents. why?

What is it called when you squeeze gas into a smaller space

Which statement is true of a chemical change? A) It involves changes in the molecular structure. B) It involves changes in phase but not changes in the molecular structure. C) It involves dissolving one substance into another.

Is blooda base or acid

Balance the following redox equation in acidic solution using the smallest integers possible and select the correct coefficient for the H + (aq) ion.

Toussaint L' ouveeture lead a revolt that eventually resulted in Independence for

If a solution contains 1 x 106 hb molecules, how many o2 binding sites are available? if the solution of hb is 50% saturated with o2, how many binding sites are occupied by o2?

A. what are isotopes? b. how are the isotopes of a particular element alike? c. how are they different?

The line of longitude used as the origin in a system of coordinates