Physicalchange. Lighting a match and letting is burn is an example of a chemical change. Chemical reactions cause chemicalchanges. In a chemical reactiontwo or more substances, called the reactants, form different substances called products.
Weight average = 1.01 * 0.99984 + 2.01* 0.00014 + 3.02 * 0.00002
answer is 1 .0101802
The number of π molecular orbitals in a molecule is always equal to the number of p orbitals used to construct the π bonds.
An electron's position and wave-like behavior within a molecule are described by a mathematical function called a molecular orbital. Chemical, as well as physical properties like the probability of locating an electron in a particular area, can be determined using this function.
A molecular orbital would be created when two atomic orbitals cross one other along the internuclear axis. A molecular orbital is created when two atomic orbitals cross each other sideways.
Therefore, the number of π molecular orbitals in a molecule is always equal to the number of p orbitals used to construct the π bonds.
Hence, the correct answer will be option (a).
To know more about molecular orbitals
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Answer:
graduated cylinder and scale and crucible.
Explanation:
you need all things thing
Answer: 28.5 g
Explanation:
1 mole of every substance contains Avogadro's number of particles and weighs same as it's molecular weight.
Here 1 mole of 
contains 
molecules of and it weighs 
molecules weigh 44g
molecules weigh = 
= 28.5g
