Chemistry;HELP
posted by Unknown
Help me set them up and then check my answers?
Round your answer to the correct number of significant digits and show work.
1. How many grams of NaI would be used to produce a 2.0 M solution with a volume of 10.00 L?
2. What is the molarity of a 2.50 x 102 cm3 solution containing 450.0 g of C6H12O6 ?
3. How many moles of Sr(NO3)2 would be used in the preparation of 20.50 L of a 30.5 M solution?

DrBob222
Here is a site to help you with significant figures.
http://www.chemteam.info/SigFigs/SigFigs.html
1. How many mols do you need? That's mols = M x L = ?
Then mols NaI = grams NaI/molar mass NaI. You know molar mass and mols, solve for grams.
2. mols c6H12 = grams/molar mass
Then M = mols/L solution.
3. See #1. mols needed = M x L = ?
Round each answer following the rules in the site I gave you.
Respond to this Question
Similar Questions

Chemistry
please check my answers for the following questions. 1) when a measurement that has six significant digits is divided by a measurement that has three significant digits, how many significant digits should the answer have? 
Chemistry
I..don't understand any of this: 43. How many moles are in 25.0 grams of potassium? 
Chemistry
Help me set them up and then check my answers? 
HELP!! Chemistry
Round your answer to the correct number of significant digits and show work. 1. How many grams of NaI would be used to produce a 2.0 M solution with a volume of 10.00 L? 
Chemistry
What is the molarity of a 5.00 x 102 ml solution containing 2490 g of KI? 
SCIENCE  PLEASE HELP PLESE
1) Round 578.683 m, 47.3333 kg, and 789.5 cm to four significant figures. 2) Find the weight of a 12.25 kg dog. Round your answer to the correct number of significant figures. Use weight=massxfreefall acceleration. 3) Round 3155.24m, … 
Physics
1.A plane traveling at 300.0 km/h attempts to land on a 500 m runway. The plane’s engines and brakes accelerate uniformly at –5.0 m/s2. Will the plane be able to land safely? 
Physics
A plane traveling at 200.0 km/h attempts to land on a 250 m runway. The plane’s engines and brakes accelerate uniformly at –7.0 m/s2. Will the plane be able to land safely? 
Science (Chemistry)
2. Perform this operation and report the answer to the correct number of significant figures: What is the mass of a cube of aluminum that is 4.0 cm on each edge? 
Algebra 1 (Check work)
4. A square has a side of 6.25 feet. What is the area in square feet?