Pj Problems - Overview
The Number Line
7 Spaces Of Interest - Overview
Triadic Unit Mesh
States Of Matter
COHN - Natures Engineering Of The Human Body
The Human-Body Systems
Faith, Love, Charity
Solutions are homogeneous mixtures. Solutions consist of solutes and solvents (the more voluminous substance into which the solute dissolves). Solution concentration measures the amount of solute per liter of the solvent. Molarity is a commonly used measure of solution concentration.
(a) The number of grams of solute in 0.250 L of 0.150 M KBr
(b) The molar concentration of a solution containing 4.75 g of Ca(NO3)2 in 0.200 L
(c) The volume of 1.50 M Na3PO4 in milliliters that contains 5.00 g of solute.
S7P1A15 (containership - mass).
Pj Problem of Interest is of type containership (mass).
(a) 0.150 M of KBr = 0.150 mol/L of KBr
O.250 L of KBr contains (0.150)(0.250) = 0.0375 mol of KBr.
Molar mass of KBr = 39 + 80 =119 g
So, 119(0.0375) = 4.46 g of solute.
(b) Molar mass of Ca(NO3)2 = 40 + 28 + 96 = 164 g
So, 4.75 g of Ca(NO3)2 = 4.75/164 = 0.0290 mol
0.200 L contains 0.0290 mol of Ca(NO3)2
So 1 liter contains 0.0290/0.200 = 0.233 mol
So, molar concentration = 0.145 M.
(c) Molar mass of Na3PO4 = 23x3 + 31 + 16x4 = 69 + 31 + 64 = 164
So, moles of 5 g of Na3PO4 = 5/164 = 0.0305 mol of Na3PO4
1.50 moles of Na3PO4 in 1 liter
So, 0.0305 mol is in 0.0305/1.50 = 0.0203 L = 20.3 mL of 1.50 M of Na3PO4.
The point . is a mathematical abstraction. It has negligible size and a great sense of position. Consequently, it is front and center in abstract existential reasoning.
Single Variable Functions
Ordinary Differential Equations (ODEs)
Separation Of Variables As Solution Method For Homogeneous Heat Flow Equation
Newton And Fourier Cooling Laws Applied To Heat Flow Boundary Conditions
Derivation Of Heat Equation For A One-Dimensional Heat Flow
The Universe is composed of matter and radiant energy. Matter is any kind of mass-energy that moves with velocities less than the velocity of light. Radiant energy is any kind of mass-energy that moves with the velocity of light.
Composition And Structure Of Matter
How Matter Gets Composed
How Matter Gets Composed (2)
Molecular Structure Of Matter
Molecular Shapes: Bond Length, Bond Angle
Molecular Shapes: Valence Shell Electron Pair Repulsion
Molecular Shapes: Orbital Hybridization
Molecular Shapes: Sigma Bonds Pi Bonds
Molecular Shapes: Non ABn Molecules
Molecular Orbital Theory
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