At room temperature you can dissolve about 300 grams of sodium carbonate (Na2CO3) in 1 liter of water. What is the molarity of sodium carbonate in the solution? The steps are: (a) Find the molar mass of sodium carbonate. (b) Convert grams of sodium carbon ...
1. Relative molecular mass method. This method calculates the molecular weight by measuring the density and molar mass of a Sodium carbonate solution. In the experiment, the density of the solution is first measured, then the molar concentration is calculated using the molar mass and density, and...
Molar mass is the mass of one mole of a substance. We determine the molar masses from values on the periodic table. Answer and Explanation: Before we can sum all of the molar mass of the elements in acetic acid we need the chemical formula of acetic acid. Acetic acid's chemical formula...
polyacrylate polymer as a co-builder in addition to the carbonate/zeolite builders in detergent builder system, secondary washing performances of powder laundry detergent containing equal percentage of sodium polyacrylate with the different weight average molar mass, (M) over bar (w), have been ...
Fig. 1: Different homogeneity of Au NCs obtained under representative conditions. a UV–vis absorption spectra. b MALDI-TOF mass spectra (in the linear mode) of the less and more homogeneous Au NCs, respectively (1:1, 15 s brown; 1:2, 15 s blue; 1:3, 15 s turquoise, 1:2...
The predetermined amount of dissolved CA corresponds to a molar ratio of CA with the metals ions (CA:Me2+) either of 1:1 or 2:1. As an optional step, ammonium hydroxide (28.0–30.0% NH3, Sigma Aldrich) was added dropwise until a pH value of about 7 was reached and stabilized. After...
, Vm(O2) = 22.39 m3 kmol−1 is the molar volume of gaseous oxygen under normal conditions, and M(X) (kg kmol−1) is the molar mass of the hypothetical elements that merge with O2; The theoretical amount of dry combustion air Lmin (m3 kg−1) was derived using the following ...
During the Marinoan Ice Age (ca. 654–635 Ma), one of the ‘Snowball Earth’ events in the Cryogenian Period, continental icesheets reached the tropical oceans. Oceanic refugia must have existed for aerobic marine eukaryotes to survive this event, as
In the second experiment, the mixture of magnesia and ammonium chloride with the molar ratio of n(NH4Cl):n(MgO) being 4:1 was used, magnesia of the same mass with the thickness ranged from of 3 mm to 10 mm was put on top of the mixture (n(NH4Cl)/n(MgO)total = 3:1)...
The molar mass of an element or molecule is the sum of the total mass in grams of all the atoms that make up a mole of a particular molecule. A mole is a unit of measurement that helps compare particles of any given substance and its mass....