V1= [V2 * M2] / M1 = [5.00 (L) * 3.00 (mol/L)] / 12.6 (mol/L) = 15.0/12.6 = 1.19 L
So carefully add a volume of 1.19 L of 12.6M HCl, as accurately as possible to about 3.5 L Water in a 5.00 L calibrated glass cylinder and fill this up to the 5L mark after mixing.
There are 8.33 * 10^(-3) moles of H+ in your solution
pH = -log [H+]
[H+] = 10^(-pH)
[H+] = 0.001 mol/L
n = C / V
n = 0.001 / 0.120
n = 0.008333... mol
12 M = 12 moles HCl per 1 liter of solution...so 12 moles/ 1 liter = 3 moles/ X liters. X = 0.25 liters of 250mL
>(0.600 M)(300mL) = 180
>180/12.0= 15.0mL
Hope this helps. =))
3/12 = 0.25 molar or 0.25 M
The answer is 36 moles HCl.
0.25 M
0.25M
120 grams of calcium contain 2,994 moles.
120 g calcium is equal to 3 moles.
120
120, 000 Kilo means thousand so....120 thousand.
1200 kg = 2645.547 lb
120 grams of calcium contain 2,994 moles.
120 g calcium is equal to 3 moles.
0,288 moles
i think its 120 (40x3)
Remember moles = nass(g) / Mr ( Relative Moleculr Mass) . mass = 120 g Mr =35.5 x 2 = 71 ( Because chlorine exists as a diatomic gas Cl2). Hence moles(Cl2) = 120 /71 = 1.690
The atomic mass of sodium, Na is 23.0 Amount of sodium = mass of sample / atomic mass = 120/23.0 = 5.22mol
0.67 moles of C6H12O6
n = 817 g x (1 mol / 120 g) = 6.81 mol
The mole of a metal, such as sodium, is generally assumed to consist of Avogadro's Number of single atoms. The gram atomic mass of sodium is 22.9898. The number of moles in 120 grams of Na is therefore 120/22.9898, or 5.22, rounded to the justified number of significant digits.
120
Moles of Ca(NO2)2=120/132=0.91 molesMolarity=0.91/0.24= 3.79M
904,000,000,000,000,000,000,000 (9.04 X 10^23) Bromine atoms.