Round off measurement 0.0003095 to 3 significant figures

Hi! Hope ur doing good my question is:What is the densest layer of earth?

How do you determine if something is an atom or ion?

You are most likely to find a fossil in which of the following? a. grass. b. stone. c. desert sand. d. sedimentary rock.

The nucleus of an atom consists of

Apply the Law of Conservation of Mass to the following problem: During a combustion reaction, 12.2 grams of methane reacts with 14 g of oxygen. The reaction produces carbon dioxide and water.

Why is it necessary for the measuring devices to be clean

Copper consists of two naturally occuring isotopes. their masses are 62.930 amu and 64.928 amu. calculate their abundances.

Which statement is true about inorganic compounds? A. They are not made of atoms. B. They contain carbon. C. They are not made from living things. D. They are all elements.

Which domain do you find the most interesting why

Complete the matching exercise below by choosing the correct description of each bond type in aqueous solution. 1. covalent bond 2. hydrogen bond 3. electrons shared by atoms a. electrons shared by atoms b.