What is the concentration of lithium ions in 0.450 M Li₂SO₄?

What is the mass % of ethanol in a 1.97 M solution of ethanol (MM = 46.07 g/mol) in water? The density of the solution is 0.925 g/mL.

How many neutrons are in a ⁴He atom? (Just put the number and no units.)

What volume (in L) of 1.20 M FeCl₂ would be required to obtain 0.850 moles of Cl⁻ ions?

What is the concentration of lithium ions in 0.450 M Li₂SO₄?

The density of water is approximately 1 g/cm³. Which of these substances will sink in water? 

Given the rooted tree below: a) Identify the root, leaves, and height of the tree. b) Find the level of vertex ‘d’ c) Find the level of vertex ‘k’ d) Draw the subtree rooted at ‘i’ e) Identify parents, children, ancestors, and siblings of the following vertices f and m:

Marketing managers communicate advertising strategy to advertising agencies using the creative brief. For example: “Toyota Sienna offers eco-friendly, comfortable, and economical transportation for parents of young children. With the Sienna, parents of young children will have high fuel efficiency, seven seats, abundant leg room, and the most storage room in its class.” An effective creative brief must communicate all of the following except _________.

A chemist encounters an unknown metal. They drop the metal into a graduated cylinder containing water, and find the volume change is 6.90 mL. If the metal weighs 9.84 g, what is the density of the metal in g/mL? (Just put the number and no units.) 

All exams will use Honorlock this semester.