Review how to calculate the mass of a liquid from its volume and density. Density is mass per unit volume: density = mass / volume You can rewrite the equation to solve for mass: mass = volume x density Densityof liquids usually is expressed in units of g/ml. If you know the density...
Review how to calculate the mass of a liquid from its volume and density. Density is mass per unit volume: density = mass / volume You can rewrite the equation to solve for mass: mass = volume x density Densityof liquids usually is expressed in units of g/ml. If you know the density...
The molarity is moles of solute per unit volume (L) and the number of moles of the solute is the ratio of the mass of the solute to its molar mass.Answer and Explanation: We are given: Volume (V) of solution = 1.00 L=1000 mL Molarity (M) of solution = 0.195 ...
Molarity is not to be confused with "molality," which is concentration expressed as moles of solute per kilogram of solvent. Examples will help clarify the concept of molarity and how it works.An Example to Calculate Molarity Consider a problem that asks for the molarity of a solution ...
Because atmospheric pressure is relatively constant, the pressure in the lungs must change to create airflow between the lungs and the outside environment. During inhalation (inspiration), the diaphragm and supporting muscles (intercostal muscles) contract, which results in an expansion of the thoracic...
From the question, we know:- Molality (m) = 1.55 m- Mass of solvent (water) = 2 kg Step 3: Calculate the Number of Moles of Ethyl AlcoholUsing the formula for molality, we can rearrange it to find the number of moles of solute (ethyl alcohol):Number of moles of solute=Molality×...
You can use any units you wish for the concentration values and volumes, so long as you use the same units for each of the two solutions. Concentration can also be expressed by percent composition by mass, mole fraction, molarity, molality or normality. ...
Step 1: Calculate the molality of the NaCl molality (m) of NaCl = moles of NaCl/kg water From theperiodic table, find the atomic masses of the elements: atomic massNa = 22.99 atomic mass Cl = 35.45 moles of NaCl = 31.65 g x 1 mol/(22.99 + 35.45) ...
Probenecid inhibits the active reabsorption of uric acid in the kidney, which leads to urinary excretion of uric acid. Explain why this drug would be useful in treating gout. How to find the mass number of an isotope? If Lithium gains one electron, what is its charge?
If the number of moles of compound molecules is known, then we can find the number of moles of all the atoms that are in the sample. The mass of a given number of moles of an atom is equal to the product of the number of moles and the mass of the atom in grams....