How many grams of cuso4 5 h20 are needed to make 1 liter of a 2% (w/v) cuso4. report to the nearest 1/10 g.

19.9 grams of will be needed.

Explanation:

Required strength of the solution = 2% (w/v)

This means that 2 gram of solute in 100 ml of solution.

Mass of  = 2 g

Moles of =

Volume of the solution = 100 mL = 0.1 L

Molarity of the solution:

0.08010 moles of are present 1 l of the solution.

Then mass of 0.08010 moles of will be:

0.08010 mol × 249.68 g/mol = 19.9993 g≈ 19.9 g

19.9 grams of will be needed.

in chemistry, a solution’s concentration is how much of a dissolvable substance, known as a solute, is mixed with another substance, called the solvent. the standard formula is c = m/v, where c is the concentration, m is the mass of the solute dissolved, and v is the total volume

what is the general relationship between a galaxy's distance from earth and its speed?

the answer is:

the farther away a galaxy is from us, the faster it is moving away from us.