If the density of Cu is 8.96g/cm cubed, what is the volume of 28kg of Cu?

Explain the meaning of each term in the symbol aXz

What was the difference between Darwin and Lamarck? A. Darwin was able to explain evolution with evidence, something Lamarck did not do. B. The idea of mutation was understood by both but, Darwin could not prove it. C.

Which of the following is an example of chemical weathering

Assertion: Gases completely fill the vessel in which they are kept. Reason: In the gaseous state, particles move freely and have greater space between them.

When a pendulum is at maximum displacement, which statement is true?

Which is a pure substance A) mixture B) solution C) element

Samuel adds a teaspoon of salt to a glass of water. He notices that the song disappears. Samuel takes a sip to discover that the water taste salty. What kind of change has occurred?

How are the physical and chemical properties of atoms represented on the periodic table of elements

how do we know isotopes exist?

Is albinism a dominant or recessive trait