Some title IDK
Calculate the grams of KCl in 230 g of an 7.00% (m/m) KCl solution.
16.1 g of KCl
What is the mole ratio of hydrogen to water in 2H2+O2-->H2O ?
2 moles of hydrogen: 1 mole of water
How many moles are in 12 grams of carbon?
1 mole of carbon
How many atoms are in 4.4 moles of silver?
2.65 x 10^24 atoms of Ag
The laboratory tests for Michelle indicate that she has hypercalcemia with a blood calcium level of 9.9 mEq/L. How many moles of calcium ion are in 0.50 L of her blood?
.0025 moles of Calcium
What is the molarity of a solution when 80.0 mL of a 5.00 M KCl solution is diluted to a volume of 400. mL?
1.00 M
Given N2 + 3 H2 ---> 2 NH3, what is the mole ratio of NH3 to H2?
2 moles of NH3: 3 moles of H2
How many moles are in 2.3 grams of phosphorus?
0.074265 moles of phosphorus
What is the weight, in grams, of 2.3 moles of Cu(OH)2?
224.365 grams of Cu(OH)2
When Whitney had her asthma attack, she was given oxygen through a face mask. The gauge on a 11-L tank of compressed oxygen reads 4200 mmHg. How many liters would this same gas occupy at a final pressure of 520 mmHg when temperature and amount of gas do not change?
89 L
In 2010, the FDA approved a 2.0% (m/v) morphine oral solution to treat severe or chronic pain. How many grams of morphine does a patient receive if 0.80 mL of 2.0% (m/v) Morphine solution was ordered?
0.016 g of morphine
How many moles are in 2.45 x 10^23 molecules of CH4?
0.41 moles of CH4
How many molecules are in 5.8 moles of MgO?
3.49 x 10^24 molecules of MgO
Helium gas is used to inflate the abdomen during laparoscopic surgery. A sample of helium gas has a volume of 6.20 L and a temperature of 13 °C. What is the final volume, in liters, of the gas after the temperature has been increased to 38 °C when the pressure and amount of gas do not change?
6.74 L
A doctor orders 1500. mL of a 38.0% (m/v) dextrose solution. If you have a 60.0% (m/v) dextrose solution, how many milliliters would you use to prepare 1500. mL of 38.0% (m/v) dextrose solution?
950 mL
Given 2H + O2 ---> 2H2O. If you had 20 moles of H2 on hand and plenty of O2, how many moles of H2O could you make?
20 moles of water
How many moles are in 68 grams of copper (II) hydroxide, Cu(OH)2?
0.6969 moles of CU(OH)2
How much does 4.2 moles of Ca(NO3)2 weigh, in grams?
689.22 grams of Ca(NO3)2
Hydrochloric acid (HCl) is a strong electrolyte. Would you expect a hydrochloric acid solution to contain only ions, only molecules, or mostly molecules and a few ions?
only ions