The half-life of osmium-183 is 6 hours. How much time would it take for 24 grams of it to

reduce to 0.75 grams?

What is 0.570qt to mL

What is the ratio of moles of solute to liters of solution called? A. dilute B. concentrated C. grams D. molarity

True or false. like poles of magnet attract each other while unlike poles repel each other.

Write a chemical equation for nh4 + (aq) showing how it is an acid or a base according to the arrhenius definition.

A solution of salt (molar mass 90 g mol-1) in water has a density of 1.29 g/mL. The concentration of the salt is 35% by mass. a. Calculate the molality of the solution. b. Calculate the molarity of the solution. c.

Which statement best describes a bacterial cell? A It contains more than one cell. B It is a complete organism. C It is part of a larger organism. D It contains different kinds of cells

Lithium (Li) and oxygen (O) are both in period 2. They both have? a. similar properties b. the same number of protons c. two electron shells d. the same number of electrons

What compares a law and a theory?

Explain what domain would best be represented by the "?" in the diagram. A) Eukarya because the organisms are all eukaryotic. B) Eukarya because the organisms are all prokaryotic. C) Bacteria because some of the organisms are autotrophs.

If you are eating a hamburger, it is an example of a consumer eating another consumer. a) true b) false