Calculate how many moles of ethanol (MM = 60.1 grams per mole) are in a gallon of this substance. How many moles of O_2 are needed to completely react with 3.8 moles of C_2H_6O? Express your answer to two significant figures and include the appropriate units. How many moles of ethan...
Finding molar mass starts with units of grams per mole (g/mol). When calculating molecular weight of a chemical compound, it tells us how many grams are in one mole of that substance. The formula weight is simply the weight in atomic mass units of all the atoms in a given formula....
How many grams of MgCl2 are needed to make 350.0 mL of a 0.125 M solution? MgCl2 is 95.211 g/mol A substance has a molecular weight of 180 g/mole, how many grams would you need to make 200 mL of a 0.2 M solution? How many grams of NaC_2H_3O_2 ...
To solve the question, "The mass of one mole of a substance in grams is called its ….A ……. Here A refers to", we need to identify the term that describes the mass of one mole of a substance.1. Understanding the Concept:
Molality is a parameter of solutions or homogenous substances. This pertains to the concentration of a substance in a solution, which is expressed as the number of moles of the solute per kilogram of the solvent. To acquire this parameter, we must be knowledgeable of ...
Mole is a measure of matter in chemistry and it corresponds to a very large number known as Avogadro's number. One mole of a monoatomic element contains Avogadro's number of elemental atoms and one mole of a diatomic element ...
50 mL of 2 M NaCl and 500 mL of H2O c. 100 mL of 2 M NaCl and 400 mL of H2O d. none of the above A student wants to prepare 250 mL of 0.10 M NaCl solution. Which procedure is most appropriate if the NaCl Molar mass is 58.4 g per mole? a) Add 5.84 g of ...
Mole:Mole depicts a sample's quantity. It is calculated by dividing the sample's mass by its molar mass. It is also calculated from the molarity formula with known values of concentration and volume.Answer and Explanation: Given: Volume of the solution is 2.50 L Molarity of th...
Calculate the freezing point in degrees Celsius for 100 grams of NH4Br, a salt, dissolved in 1000 grams of water. Colligative Property - Freezing Point Depression: When a solute is dissolved in a solvent, the physical properties of the solvent (e....
Write the procedure for making 900 ml of a 0.5 M solution of NaCl with a formula weight of 58.4 g/mole. Which of the following options is correct? In the reaction NaOH + H_2CO_3 rightarrow NaHCO_3 + H_2O, the weak base is a...