To make a 0.25 mol solution of sodium nitrite, measure out 8.25 grams of sodium nitrite (NaNO2) (sodium nitrite has a molar mass of 69.01 g/mol) and dissolve it in enough water to make a total volume of 1 liter. This will give you a 0.25 mol/L solution of sodium nitrite.
025 most likely refers to the purity of the silver piece, indicating that it contains 2.5% of other metals (usually copper) in addition to the 97.5% of pure silver. This is a common standard for making silver alloys to increase durability and hardness.
2005 Lincoln cents are .975 Zinc & .025 Copper
A US 1 cent piece prior to 1982 was made of copper and had a mass of about 3.1g. This is about 0.049 moles of copper, or around 2.9 x 1022 atoms. More recent pennies are mostly zinc (97.5%) and have a mass of about 2.5g. This works out to around 2.2 x 1022 zinc atoms and 5.9 x 1020 copper atoms, so overall around 2.3 x 1022 atoms.
1.25 Solution Method: 1. Convert 2.5% to decimal: 2.5 / 100 = .025 2 Compute answer: 50 * .025 = 1.25
.025 meters
.025 percent Solution Method: 250 ppm = the ratio 250:1,000,000 = the fraction 250/1,000,000 = the decimal value 0.00025 = the percentage .025 (i.e. 0.00025 * 100)
025 is the same as 25 which is greater than 5
It is: .025 times 80 = 2
zero point zero two fivenought point nought two five
0.0001
.025 is thicker than .012
95 is greater than 025
No. 025 cents is 25 cents.
0.05, 0.5, 5.2 and 025.
They are: .025, 0.25, 2.5 and 25