An antacid contains 200mg of aluminum hydroxide and 200mg of magnesium hydroxide per capsule. a. How many moles of Al(OH)3 does each capsule contain? 2.56 x 10^-3 mol Al(OH)3 is that correct? b. What is the mass in milligrams of 0.0457 mole of magnesium hydroxide? 2.665 x 10^-...
If I have 1.93 x 10^-6 mole of chromium that would equal 100.35 mcg correct?
If I have 40mg of potassium, that would be how many moles of potassium? mols= grams/atomic number 0.04g/39.0983= .001023062 would equal 1.02 x 10^-3 correct? Did I do this problem correctly?
1.Ruth has 240 feet of fencing available to enclose a rectangular field. Express the area A of the rectangular field as a function x, where x is the length of the field. 2. For what value of x is the area largest? 3. What is the maximum area?
If I had to report calculations precision to +/-1, 23.40-18.2= 5.2 948.75+62.45=1011.20 Would those answers be correct?
When one gram of gas, is burned, 55.5kJ of heat are released. How many pounds of methane gas must be burned to release 2.578 x 10^3kJ of heat?
The Smiths want to buy a 9 ft. by 12 ft. carpet and center it in a 15 ft. by 20 ft. room. What is the area of the carpet?
What is the molarity of a 15%w/v HCl solution (GMW=36.46)?
give x has a poisson distribution with mean=1.6 what is the probability that x=9
sam burned a CD with 6 songs how many ways can Sam arrange songs on a CD