Common Gases Used in Laboratories Are Generally Obtained from Pressurized $\rarr$

question 45

Short Answer

Common gases used in laboratories are generally obtained from pressurized metal gas cylinders, but for small amounts of occasionally-used gases, it is sometimes easier just to prepare them chemically.For example, oxygen gas can be prepared by heating KMnO₄(s)according to the following chemical reaction:
2KMnO₄(s) $\rarr$ K₂MnO₄(s)+ MnO₂(s)+ O₂(g)
How many grams of KMnO₄ would you need to produce 0.27 moles of O₂, assuming 100% conversion? The molar mass of KMnO₄ is 158.034 g/mol.

Explore the role of significant legislative and judicial actions during Reagan's era.

Comprehend the consequences of Reagan's defense and military policies.

Discuss the implications of Reagan's policies on environmental and educational sectors.

Examine Reagan's stance on social issues, including women's rights and minority groups.

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Definitions:

Liquidity Ratios

Financial metrics that measure a company's ability to pay off its short-term obligations with its liquid assets.

Return on Assets

Return on Assets (ROA) is a profitability ratio that measures the efficiency of a company in generating profit from its assets.

Average Collection Period

The average amount of time it takes for a company to receive payments owed by its customers, indicating the efficiency of its credit and collections policies.

Return on Equity

A measure of a corporation's profitability, calculated by dividing net income by shareholder equity, indicating how effectively equity is utilized to generate profits.