Notes, summaries, assignments, exams, and problems for Primary education

Submetida a um tratamento médico, uma pessoa ingeriu um comprimido contendo 45 mg de ácido acetilsalicílico (C9H8O4). Considerando a massa molar do C9H8O4 180g/mol e o número de Avogadro 6.10²³, o número de moléculas da substancia ingerida é?
Primeiro transformando mg para g

1g..................1000mg
x....................45mg

x = 0,045g

1 mol.........................180g

x................................0,045

x = 0,00025mol

1 mol...............6,0 . 10²³

0,00025............x

x = 1,50 . 10^20

A balança mais precisa pode detectar uma variação de aproximadamente 10( elevado -8g). Quantos átomos de ouro existiriam em uma amostra desse peso?
Primeiramente consulte uma tabela periódica para obter a massa atômica do ouro( ma = 197u)
assim, a

Vocabulary

• Accent - acento
• Citizenship - nacionalidad
• Demand - exigir, requerir
• Law - ley
• Citizens - ciudadano
• Force - obligar
• Government - gobierno
• Proposal - propuesta
• Prove - demostrar
• Typical - típico
• Trendy - de moda
• Quiet - tranquilo
• Noisy - ruidoso
• Appearance - aspecto físico
• Painful - doloroso
• Hardship - problema
• Aware - consciente
• Light-skinned - piel clara
• Tease - burlarse
• Lucky break - suerte
• Pretty curly - bonito rizado
• Good looking - guapo

Text Analysis

Redefining British Culture

True or False:

1. True (lines 1-2)
2. False (lines 5-6)
3. True (lines 8, 9, 10)
4. False (lines 11)
5. False (lines 14)

Inner Beauty: Can We Really See It?

1. People sometimes judge others based on their physical appearance.
2. 1. b
   2. a
3. 1. She experienced being judged.
   2. Because of how she looked.
   3. He is able to see

Game of Thrones: A Battle for Power

Game of Thrones is a fantasy TV series which has attracted millions of fans. Set in an unknown time in the past on the continent of Westeros and the surrounding islands, it tells the story of the fight to be the ruler of Westeros. There are three main families in this fight: the Starks, the Lannisters and the Targaryens.

As the series progresses, we follow the stories of the main contenders for the throne. Throughout most of the series, it is Cersei Lannister who actually rules Westeros. However, Jon Snow, a member of the Stark family, slowly gains power in the north, while Daenerys Targaryen develops from a weak young girl to a powerful leader of armies in the south. None of them has an easy job gaining power... Continue reading "Game of Thrones: A Thrilling Fantasy Epic" »

Alkali Metals

Lithium

• Lithium is harder than other alkali metals.
• It has higher melting and boiling points than other alkali metals.
• It is the least reactive alkali metal.
• It is a strong reducing agent compared to other alkali metals.
• It is the only alkali metal that forms its monoxide.
• It is not capable of forming solid hydrogen carbonates, unlike other alkali metals.
• It does not react with ethyne to form ethynide, while other alkali metals do.
• It reacts slowly with bromine compared to other alkali metals.
• It is the only alkali metal that reacts with nitrogen to give lithium nitride (Li₃N).

Alkaline Earth Metals

Beryllium

• Beryllium is harder than other members of its group.
• It has higher melting and boiling points than other members of its group.
• Its electronegativity

Section 1: Collecting and Organizing Information

Accounting is an information system that reports on the economic activities and financial condition of a business or other organization.

1.1 Identifying the Ways Accounting Benefits Society

Accounting provides information that helps answer questions such as:

• How should society allocate its resources?
• Should we spend more money to harvest food or cure disease?
• Should we build computers or cars?
• Should we invest money in IBM or General Motors?

Market-Based Allocations

A market is a group of people or entities organized to exchange items of value. Common terms for the added value created in the transformation process include profit, income, and earnings.

Financial Resources

Businesses need financial resources... Continue reading "Accounting: An Information System for Resource Allocation" »

The elasticity of demand refers to the degree of responsiveness of quantity demanded of a commodity to a change in its price or any other factor).
The concept of elasticity of demand is of great importance to producers, farmers, workers, and the Government. Lord Keynes considered this concept to be the most important contribution of Alfred Marshall.
The importance of elasticity of demand can be explained with the help of the following points:
1. Importance to a Producer: Every producer has to decide the price of his product at which he has to sell it. The concept of elasticity of demand becomes important for this purpose. If the producer is producing a commodity whose demand is relatively inelastic, then he can set a high price for it. Similarly,... Continue reading "Importance of Elasticity of Demand in Economics" »

Part 1: Financial Ratios and Metrics

Working Capital

Working Capital = Accounts Receivable + Stock - Accounts Payable

Net Short-Term Debt

Net Short-Term Debt = Short-Term Debt - Cash

Net Total Debt

Net Total Debt = Net Short-Term Debt + Long-Term Debt

Net Total Investment

Net Total Investment = Working Capital + Net Fixed Assets

Security Stock

Security Stock = Working Capital - Net Short-Term Debt

Average Collection Period (ACP)

ACP = [(Average Accounts Receivable) / (Revenues)] * 365

Average Sales Period (ASP)

ASP = [(Average Stock) / (Cost of Sales)] * 365

Purchases

Purchases = Cost of Sales + Stock2 - Stock1

Average Payment Period (APP)

APP = [(Average Accounts Payable) / (Purchases)] * 365

Financial Average Maturity

Financial Average Maturity = Sum of Averages

Cash

1. THE GENERAL ASSEMBLY The most democratic organ, in which each state (193) gets one vote, no matter how big or small, rich or poor. The General Assembly has the competence to discuss and make recommendations on all matters that fall within the scope of the UN Charter.

2. THE SECURITY COUNCIL The most powerful organ. Its primary responsibility is to maintain peace and security.

It is composed of 15 members, 5 permanent with veto power (United States, China, France, Russia, and the United Kingdom) and 10 elected by the GA for 2 years.

The Security Council is the only organ that can impose sanctions on states or deploy military forces on behalf of the international community to keep the peace in certain areas, regions, or countries.

3. THE SECRETARIAT

5) Family Business Survival Strategies

A study indicates that family businesses often struggle to survive across multiple generations. However, there are four key strategies that can increase their chances of longevity:

Establish Strong Governance

Creating a solid governance framework is essential. This includes attracting and retaining top talent while maintaining a clear separation between the family and the business itself.

Preserve "Family Gravity"

Identify and empower key family members who can align everyone's interests and drive the pursuit of common goals. These individuals serve as motivators and role models within the family and the business.

Early Talent Identification and Development

Invest in developing the skills and potential of family... Continue reading "Strategies for Success in Family Businesses and Modern Organizational Structures" »