(2pts) Given 750ml of an 5M Na2CO3 stock solution, how much do you need to make 675ml of a 25% Na2CO3 working solution

The answer is "256.33 ml".

Explanation:

Given

In solution means solution

 for solution mass of needed is calculated as

now calculating moles of the

by using the moles and molarity of the stock solution we calculate the volume of the stock solution:  

molarity = moles / volume in liter

so

convert liter to ml

56 moles of   lieter in chemistry

hurricanes form when warm, moist air from the ocean surface quickly rises into the atmosphere and forms storm clouds and rain. when the clouds are formed, heat is released which warms the cool air in the upper regions of the atmosphere so that the cycle can continue. which two phases of the water cycle are repeated in this process?