A sample of air, with a mass of 5.0 kg, contained carbon monoxide with a concentration of 12 parts per million by mass. What is the mass of carbon monoxide in this sample of air? A 6.0 × 10−2 g B 6.0 × 10−5 g C 2.4 × 10−6 g D 2.4 × 10−9 g

A chemist prepares a solution of iron (II) chloride (FeCl₂) by measuring out 1.0 g of FeCl₂ into a 250. mL volumetric flask and filling to the mark with distilled water. Calculate the molarity of Canions in the chemist's solution. Be sure your answer is rounded to 2 significant digits. 7 mol L 0x x10 X Ś

1. What is the mass, in grams, of 1.67 x 10^15atoms of Mn2. What is the mass, in grams, of 6.45 x 1023 atoms of N3. What is the mass, in grams, of

1.) What is the molar mass for aluminum sulfate? Please use the atomic masses on the periodic table. Express your answer with the correct significant figures and units for molar mass. Mass Choices:  123.05 342.17 6.02 x 10^23 273.08 Unit Choices:  mol mol/g g g/mol 2.) How many grams are there in 5.699 moles of copper, Cu?  Express your answer with the appropriate significant figures and units.  0.08968 g/mol Cu 362.2 g/mol Cu 362.2 g Cu 0.08968 g Cu

Suppose 1.24 g of sodium chloride is dissolved in 200. mL of a 28.0 m M aqueous solution of silver nitrate. Calculate the final molarity of sodium cation in the solution. You can assume the volume of the solution doesn't change when the sodium chloride is dissolved in it. Be sure your answer has the correct number of significant digits. ol M x10 Ar

Suppose 20.8 g of lead(II) nitrate is dissolved in 150. mL of a 0.70 M aqueous solution of ammonium sulfate.  Calculate the final molarity of nitrate anion in the solution. You can assume the volume of the solution doesn't change when the lead(II) nitrate is dissolved in it.    Be sure your answer has the correct number of significant digits.

A solution of CaCl2CaCl2 in water forms a mixture that is 38.5%38.5% calcium chloride by mass. If the total mass of the mixture is 117.9 g,117.9 g, what masses of CaCl2CaCl2 and water were used?

Neutralization reactions involve the hydrogen ions (H+) from an acid, reacting with a base that often contains hydroxide ions (OH). Use this information to predict the name and formula for the chemical substance that is always produced in this type of reaction.

Crime scene investigators keep a wide variety of compounds on hand to help with identifying unknown substances they find in the course of their duties. One such investigator, while reorganizing their shelves, has mixed up several small vials and is unsure about the identity of a certain powder. Elemental analysis of the compound reveals that it is 67.31 % carbon, 6.978% hydrogen, 4.617% nitrogen, and 21.10% oxygen by mass.     Which of the compounds could the powder be? C17H19NO3C17H19NO3 = morphine, analgesic C17H21NO4C17H21NO4 = cocaine, illicit drug C7H5N3O6C7H5N3O6 = 2,4,6-trinitrotoluene (TNT), commonly used explosive C10H15NC10H15N = methamphetamine, stimulant C4H5N2OC4H5N2O = caffeine, stimulant C11H15NO2C11H15NO2 = 3,4-methylenedioxymethamphetamine (MDMA), illicit drug C21H23NO5C21H23NO5 = heroin, illicit drug C3H6NO3C3H6NO3 = hexamethylene triperoxide diamine (HMTD), commonly used explosive

Calculating molarity using solute mass A chemist prepares a solution of sodium nitrate (NaNO3) by measuring out 95.5 g of sodium nitrate into a 250. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mol/L of the chemist's sodium nitrate solution. Round your answer to 3 significant digits. mol/L x10 1/3 Ś Olivia V ? 00 A