Marble is mainly CaCO3 so its one mole is equal to 100 g.
If you think to calcium carbonate (CaCO3) 3 moles is equal to 300,2607 g.
NH3 is balanced at 1:3, so in 3 moles NH3 there are 3*3 = 9 moles H atoms
3 moles KOH to neutralize 3 moles HNO3 : 3 mol OH- will react with 3 mol H+
Methane (CH4) has four atoms of hydrogen per molecule. If there are 3 moles of methane, then there are 12 moles of hydrogen.
N2 + 3H2 ---> 2NH3 so 3 moles of Hydrogen produces 2 moles of ammonia. Thus 1.8 moles will produce 1.8/3 x 2 = 1.2 moles of ammonia.
The mass in grams of 3,20 moles of copper is 158,865 g.
The fraction is 3/15.
Playing marbles is so much fun when you accumulate many marbles. There is little, or no fun, when you lose your marbles!
There could be 12 white marbles and 16 red marbles
Let X = the number of green marbles. X+3 = the number of blue marbles. X + (X+3) = 23 2X + 3 = 23 2X = 20 X = 10 or the number of green marbles.
a+b=23 b=a+3 a+b a+(a+3)=23 a+a=23-3 2a=20 a=10 green marbles=10 blue marbles =23-10 =13
2 out of 3 times 3 out of 5
He has a number of yellow marbles that leaves a reminder of 2 when divided by 3 and is a number smaller than 22. That is the number of yellow marbles = 2(mod 3).
Uranium marbles contain up to 3 % uranium; these marbles are fluorescent under an UV light.
The ratios are: red : green = 2 : 3 = (2×3) : (3×3) = 6 : 9 green : blue = 9 : 4 → ratio of red : green : blue = 6 : 9 : 4 There are 6 + 9 + 4 = 19 parts 76 marbles ÷ 19 parts = 4 marbles per part → red: 6 parts = 6 × 4 marbles per part = 24 red marbles → green: 9 parts = 9 × 4 marbles per part = 36 green marbles → blue: 4 parts = 4 × 4 marbles per part = 16 blue marbles To check: red + green + blue = 24 marbles + 36 marbles + 16 marbles = 76 marbles in the bag.
12 blue marbles
24 red marbles
12 blue marbles