Answer:
Explanation:
(KF)2(Al2O3)3(SiO2)6(H2O)
molecular formula
K₂F₂Al₆Si₆O₂₂H₂
2 x 39 + 2 x 19 + 6 x 27 + 6 x 28 + 22 x 16 + 2 x 2
= 78 + 38 + 162+ 168+ 352+ 4
= 802
Percentage of K = 78 x 100 / 802
= 9.72 %
Percentage of F = 38 x 100 / 802
= 4.74 %
Percentage of Al = 162 x 100 / 802
= 20.2 %
Percentage of Si = 168 x 100 / 802
= 20.9 %
Percentage of O = 352 x 100 / 802
= 43.9 %
Percentage of H = 4 x 100 / 802
= .54 %
Answer:
The amount of sodium in this sample = 32.4 grams
Explanation:
Mass of Sodium = 23 g/mol
Mass of Chlorine = 35.5 g/mol
Mass of NaCl = 35.5 g/mol
Fraction of Na in NaCl = 
=0.648
We are given a sample of 50 grams of sodium chloride.
The amount of sodium in this sample = 
The amount of sodium in this sample = 
The amount of sodium in this sample = 32.4 grams
You may normally expect a (slow, b) Reaction rate if a (large, b) A.E. is required
hope this helps have a nice day bud
Answer:
carbon dioxide and water.
Explanation:
Chemical equation:
2C₂H₆ + 7O₂ → 4CO₂ + 6H₂O
Reactants are present on the left side of chemical equation while products are present on the right side of chemical equation. In given chemical equation ethane and oxygen are reactant while carbon dioxide and water are product.
The given reaction is combustion reaction. Ethane is burnt in the presence of oxygen and produces carbon dioxide and water.
The reaction also follow the law of conservation of mass.
This law was given by French chemist Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.
Density: Degree of consistency measured by the quantity of mass per unit volume.
Volume: Amount of space something takes up.
