The term empirical and molecular formula for a substance should be determined. The information which is provided by both the formulas about a compound should be determined long with the information which must be known for a compound before the molecular formula can be determined. The reason that the molecular formula an integer multiple of the empirical formula should be determined. Concept Introduction: The chemical formula which represents the simplest whole number atoms ratio present in the compound is said to be empirical formula. The chemical formula which shows the actual number of every atoms present in the compound is known as molecular formula. Number of moles can be calculated as follows; Nuumber of moles = mass in g molar mass .
The term empirical and molecular formula for a substance should be determined. The information which is provided by both the formulas about a compound should be determined long with the information which must be known for a compound before the molecular formula can be determined. The reason that the molecular formula an integer multiple of the empirical formula should be determined. Concept Introduction: The chemical formula which represents the simplest whole number atoms ratio present in the compound is said to be empirical formula. The chemical formula which shows the actual number of every atoms present in the compound is known as molecular formula. Number of moles can be calculated as follows; Nuumber of moles = mass in g molar mass .
Solution Summary: The author explains that empirical and molecular formulas should be determined long with the information which must be known for a compound.
The term empirical and molecular formula for a substance should be determined. The information which is provided by both the formulas about a compound should be determined long with the information which must be known for a compound before the molecular formula can be determined. The reason that the molecular formula an integer multiple of the empirical formula should be determined.
Concept Introduction:
The chemical formula which represents the simplest whole number atoms ratio present in the compound is said to be empirical formula.
The chemical formula which shows the actual number of every atoms present in the compound is known as molecular formula.
Using the Nernst equation to calculate nonstandard cell voltage
A galvanic cell at a temperature of 25.0 °C is powered by the following redox reaction:
MnO2 (s)+4H* (aq)+2Cr²+ (aq) → Mn²+ (aq)+2H₂O (1)+2Cr³+ (aq)
+
2+
2+
3+
Suppose the cell is prepared with 7.44 M H* and 0.485 M Cr²+ in one half-cell and 7.92 M Mn² and 3.73 M Cr³+ in the other.
Calculate the cell voltage under these conditions. Round your answer to 3 significant digits.
☐
x10
μ
Х
5
?
000
日。
Calculating standard reaction free energy from standard reduction...
Using standard reduction potentials from the ALEKS Data tab, calculate the standard reaction free energy AG° for the following redox reaction.
Be sure your answer has the correct number of significant digits.
NO (g) +H₂O (1) + Cu²+ (aq) → HNO₂ (aq) +H* (aq)+Cu* (aq)
kJ
-
☐ x10
x10
olo
18
Ar
Calculating the pH of a weak base titrated with a strong acid
b
An analytical chemist is titrating 116.9 mL of a 0.7700M solution of aniline (C6H5NH2) with a 0.5300M solution of HNO3. The pK of aniline is 9.37.
Calculate the pH of the base solution after the chemist has added 184.2 mL of the HNO 3 solution to it.
Note for advanced students: you may assume the final volume equals the initial volume of the solution plus the volume of HNO3 solution added.
Round your answer to 2 decimal places.
pH = ☐
☑
5
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Step by Step Stoichiometry Practice Problems | How to Pass ChemistryMole Conversions Made Easy: How to Convert Between Grams and Moles; Author: Ketzbook;https://www.youtube.com/watch?v=b2raanVWU6c;License: Standard YouTube License, CC-BY