Answer:
Liquid volume is usually measured using either a graduated cylinder or a buret. As the name implies, a graduated cylinder is a cylindrical glass or plastic tube sealed at one end, with a calibrated scale etched (or marked) on the outside wall.
We need hydrogen and oxyegen to make water (H2O) nice question
Explanation:
you're already have a molarity in Question
Molarity M = numer of moles (n) / Volume (Liter)
first you must convert ml to L > 500 ml = 0.5 L
so 2.2 = n / 0.5
n = 2.2 × 0.5 = 1.1 moles
now you are already have number of moles and from the question you have K2O and you can calculate Molecular weight for K2O
K=39
O=16
Mw = 2×39 + 16 = 94
now you can calculate how gram do you need from
number of mole = mass (g) / molecular weight for k2o
so => 1.1 = mass / 94
mass = 1.1 × 94 = 103.4 g
good luck
2N2O3-2N2+3O2
Explanation: When you multiply 2 you get 4 nitrogens and 6 Oxygens on the left, on the right you get the same thing. Essentially you’re trying to get both sides to have the same amount of elements.
Answer:
25.05 g of S₈
Explanation:
The balance chemical equation for given synthetic reaction is,
S₈ + 8 O₂ → 8 SO₂
Step 1: <u>Calculate Moles of SO₂ at STP:</u>
According to Avogadro's Law, at STP (0 ° C and 1 atm) every ideal gas occupies 22.4 L of volume. Therefore, the moles contained by 17.5 L of SO₂ are as;
Moles = 17.5 L / 22.4 L
Moles = 0.781 moles of SO₂
Step 2: <u>Calculate Moles of S₈ consumed:</u>
According to balance equation,
8 moles of SO₂ were produced by = 1 mole of S₈
So,
0.781 moles of SO₂ will be produced by = X moles of S₈
Solving for X,
X = 0.781 mol × 1 mol / 8 mol
X = 0.0976 moles of S₈
Step 3: <u>Calculate Mass of S₈ as;</u>
Mass = Moles × M.Mass
Mass = 0.0976 mol × 256.52 g/mol
Mass = 25.05 g of S₈