Which of the following definitions best describes a mineral?
A. a substance that cannot be separated or
broken down into simpler substances by
chemical means
B. a substance that makes up atoms of two or
more different elements joined by chemical
bonds
C. a naturally formed, inorganic solid that has a
definite crystalline structure
D. a solid whose atoms, ions, or molecules are
arranged in a definite pattern

In the experiment you asked to react hydrochloric acid and with sodium hydroxide. when measuring the volume of the reactants, which instrument would give the greatest precision.

In what way do investigations build scientific knowledge? the results of investigations lead to questions that cannot be tested. they reflect the opinions and social values of scientists, ensuring valid information. the results of investigations lead to new questions, which lead to new investigations. they are not influenced by the research of earlier scientists, so they are able to address gaps in understanding.i

Asample of sea water contains 6.28g of sodium chloride per litre of solution. how many milligrams of sodium chloride would be contained in 15.0ml of this solution?