Answer:
2C7H16 + 22O2------------> 14CO2 + 16H20-
Explanation:
Write and balance the equation for the complete combustion of heptane, C7H16. Phase symbols and energy changes are optional.
2C7H16 + 22O2------------> 14CO2 + 16H20-
Answer:
22 mol
Explanation:
Given data:
Number of atoms of Cl = 2.65×10²⁵ atom
Number of moles of Cl = ?
Solution:
The given problem will solve by using Avogadro number.
It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance. The number 6.022 × 10²³ is called Avogadro number.
1 mole = 6.022 × 10²³ atoms
2.65×10²⁵ atom × 1 mol / 6.022 × 10²³ atoms
0.44×10² mol
22 mol
Answer:
OPTUON C,CHEMICALLY BONDED
Answer:
51.03g/mol is the molar mass of X
Explanation:
Based on the reaction:
2XI₃ + 3Cl₂X → 2XCl₃ + 3I₂
<em>Where 2 moles of XI₃ reacts to produce 2 moles of XCl₃ -The ratio of reaction is 1:1-</em>
<em />
To solve this question we must find the mass of X per mole (This is the atomic mass of X).
As the moles of both compounds are the same:
1.196g / 0.436g = Molar mass XI₃ / molar mass XCl₃ <em>(1)</em>
Also:
Molar mass XI₃ = Molar mass X + 380.71g/mol
Molar mass XCl₃ = Molar mass X + 106.36g/mol
Replacing in (1):
2.7431 = (Molar mass X + 380.71g/mol) / (Molar mass X + 106.36g/mol)
2.7431 Molar mass X + 291.76g/mol = Molar mass X + 380.71g/mol
1.7431 Molar mass X = 88.95g/mol
Molar mass X = 51.03g/mol
<h3>51.03g/mol is the molar mass of X</h3>