Answered

Explore Westonci.ca, the premier Q&A site that helps you find precise answers to your questions, no matter the topic. Get immediate and reliable answers to your questions from a community of experienced experts on our platform. Connect with a community of professionals ready to provide precise solutions to your questions quickly and accurately.

Calculate the molarity of a solution that contains 15.7 g of CaCO3 dissolved in enough water to make 275 mL of solution. (MW: CaCO3=100.09 g/mol

Sagot :

We can find molarity using the following equation:

In this problem, our solute is CaCO3, and we have 15.7 g of it. To express this amount in moles, what we do is to divide by the molar weight of CaCO3. (Always that you want to pass from grams to moles you do this, just to divide the amount that you have by the molar weight of the substance).

This is:

Now, we have 275mL of solution and this is 0.275L of solution. (To pass from mL to L we just divide by 1000).

Finally, replacing in the formula to find molarity, we have:

The answer is 0.57M.

View image SkarletH47848
View image SkarletH47848
View image SkarletH47848
Your visit means a lot to us. Don't hesitate to return for more reliable answers to any questions you may have. We hope this was helpful. Please come back whenever you need more information or answers to your queries. We're here to help at Westonci.ca. Keep visiting for the best answers to your questions.