What is the mass of Triangle?
The two lines drawn from the midpoints are the median of each side and the point at which the two sides of the triangle meet is the vertex. This point will be the centre of mass of the triangle.
Where is Centre of mass of a triangle?
The second, which is less obvious, is that the centre of mass of a uniform triangle is at the point of intersection of its medians: that is, the lines joining its vertices to the midpionts of the opposite sides. Moreover, the centre of mass lies two-thirds of the way along each median.
What is the formula for Mol?
Avogadro’s number is a very important relationship to remember: 1 mole = 6.022×1023 6.022 × 10 23 atoms, molecules, protons, etc. To convert from moles to atoms, multiply the molar amount by Avogadro’s number. To convert from atoms to moles, divide the atom amount by Avogadro’s number (or multiply by its reciprocal).
How do I calculate molar concentration?
Concentration formula: To find the molar concentration of a solution, simply divide the total moles of solute by the total volume of the solution in liters.
How do you find the concentration of an acid?
Step 3: Calculate the concentration of hydrochloric acid in mol/dm 3
- Concentration in mol/dm 3 =
- Concentration in mol/dm 3 =
- = 0.125 mol/dm 3
- Relative formula mass of HCl = 1 + 35.5 = 36.5.
- Mass = relative formula mass × amount.
- Mass of HCl = 36.5 × 0.125.
- = 4.56 g.
- So concentration = 4.56 g/dm 3
What is the percentage purity of HCl?
QHow to calculate the molar concentration of the solution
| Compound | Molecular formula | Purity (w/w％) |
|---|---|---|
| Hydrochloric acid | HCl | 35% |
| Nitric acid | HNO3 | 60% |
| 65% | ||
| 70% |
What is the formula for percentage purity?
Percentage purity of a substance can be calculated by dividing the mass of the pure chemical by the total mass of the sample, and then multiplying this number by 100.
How do you get 10% HCl from 37 %?
In 37% conc HCl,mass of HCl in 1000ml=1.19g/ml x1000ml x37%=440.3g. mass of HCl in 100ml=44.03g. 10/44.03 x 100ml = 22.7ml of conc HCl. Add water to make up to 100ml to get 10%w/v HCl.
Is 37 HCl concentrated?
Considering 37% as the maximum solubility of HCl, you can calculate the molarity using the solution density (1.2 g/mL) and HCl’s molar mass (36.46 g/mol). In 444g of HCl you have 12.18 moles (444/36.46), which means the concentration of P.A. HCl is around 12.18 moles per liter. Note that because P.A.
What percentage is 1 m HCl?
1 M HCl= 36.5 g HCl in 1000 ml solution. So,300/36.5=8.22M, 30% Hcl solution means 8.22M solution.
What is the pH of a 0.1 M solution of HCl?
1.083
How do you calculate the pH of HCl?
Since HCl is a strong acid, it completely ionizes, and the pH of HCl in solution can be found from the concentration (molarity) of the H+ ions, by definition equal to 0.100 M. (The conjugate base of the acid, which is the chloride ion Cl–, would also have a concentration of 0.100 M.) The pH is thus –log(0.100) = 1.000.