Answer:
the equilibrium bond length of H137I is
Explanation:
The quantum state has a rotational energy which can be expressed mathematically
Here,
B is the rotational constant given as
We are given from the question that
Substituting we have
Where,
h is plank constant
r is radius
I is moment of inertia
Making the subject
The moment of inertia = Reduced mass ×
Therefore
Making the subject of the formula
Answer : The chemical formula of pure substances are different from those of mixtures because all the matter that exists on earth can be classified into two categories namely; pure substances and mixtures.
A pure substance always consists of a single element or compound. Example Oxygen is formed only of oxygen (O) atoms; whereas the table salt which is formed only by sodium chloride (NaCl) molecules is a compound which is made up of pure elements. A pure substance cannot be further divided into its components.
A mixture is made up of different compounds and/or elements. It can be easily separated using any physical method. Example, sand, salt and saw dust mixed together as a mixture. Also, it will not have a definite chemical formula.
Please refer the attachment for better understanding.
Answer:
two
Explanation:
wo moles of chlorine gas reacts with one mole of sodium to produce two moles of sodium chloride.
Answer:
0.56 M
Explanation:
Step 1: Given data
- Rate constant (k): 0.035 s⁻¹
- Initial concentration of the reactant ([A]₀): 1.5 M
Step 2: Calculate the amount of reactant ([A]) after 28 seconds
For a first-order kinetics, we will use the following expression.
ln [A] = ln [A]₀ - k × t
ln [A] = ln 1.5 - 0.035 s⁻¹ × 28 s
[A] = 0.56 M