You have 15g of sodium iodide (Nal), which has a molecular weight of 150 g/mol. You place it all in a beaker and fill the beaker to until you have one liter of solution. What is the molarity of the solution?

A. 0.1M

B. 15M

C. 0.15M

D. 0.01M

A. 0.1 M

Explanation:

Given data

Step 1: Calculate the moles of solute

Step 2: Calculate the molarity of the solution

The molarity of the solution is equal to the moles of solute divided by the liters of solution.

The solution is 0.1 M.

A. 0.1M .

Explanation:

Hello,

In this case, we first compute the moles of sodium iodide by using its molar mass:

Then, since the volume of the solution is 1 litre, we can easily compute the molarity:

Hence, answer is A. 0.1M

Best regards.

the density of gold = 19.3 g/cm3

the relation between density and mass and volume is

density = mass / volume

given :

mass of gold = 13 g

density = 13g / volume = 19.3

volume = 13 /19.3 = 0.67 cm^3

thus volume of gold nugget = 0.67 cm^3