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Given the following acids and bases and their corresponding equilibrium constants, which two species you would mix in water in equal quantities to produce a neutral solution?

Acid 1Ka = 1.3 × 106
Acid 2Ka = 4.7 × 10-8
Base 1Kb = 6.1 × 10-9
Base 2Kb = 1.1 × 107

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The reaction, 2MO(s) + CO2(g) → M2O3(s) + CO(g) where M is a metallic element, is spontaneous at high temperatures but non-spontaneous at low temperatures.

If we assume that ΔrH° and ΔrS° are constant over a wide temperature range we can deduce that:

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Using the information provided in the table below, which of the atoms/ions would you expect to have the smallest atomic radius?

Element nameAtomic numberChemical symbolPredicted electronic configuration

(for an isolated atom)
Nihonium113Nh[Rn] 5f14 6d10 7s2 7p1
Muscovium115Mc[Rn] 5f14 6d10 7s2 7p3
Tennessine117Ts[Rn] 5f14 6d10 7s2 7p5
Oganesson118Og[Rn] 5f14 6d10 7s2 7p6
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What is the key business decision faced by pharmaceutical companies in the case, Life, Death and Property Rights: The Pharmaceutical Industry Faces AIDS in Africa? Choose three (3) correct answers.

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Considerando o conjunto de dados da tabela abaixo, qual a fórmula que permite obter o valor da população do país com a segunda maior Área?

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A tabela da figura tem dados de 60 nomes.

Qual formula a inserir na célula M3 de modo a poder ser copiada para M4 sem necessidade a alterações em M4 
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Qual a fórmula a introduzir na célula C2 que copiada para as restantes células da coluna C, permite preencher a coluna com o nome completo da pessoa?

Nota: nome e sobrenome devem ser separados por um espaço em branco
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