Percent by Mass Quiz

Froggy Jumps

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Mass percent basics

Aileen Comedia

Philippines

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Percent by Mass Quiz


Froggy Jumps Percent by Mass QuizVersion en ligne Mass percent basics par Aileen Comedia 1 What is the mass percent of a component in a mixture? a (m_total / m_i) × 100 b w_i = (m_i / m_total) × 100 c m_i / m_total 2 Which formula correctly defines mass percent of A in a mixture? a w_A = m_total / m_A b w_A = (m_A / m_total) × 100 c m_A = m_total × 100 3 If 5 g of solute are in 95 g of solution, what is the mass percent? a 50% b 5% c 95% 4 A 250 g sample contains 60 g solute. What is the mass percent of solute? a 14% b 34% c 24% 5 If 40 g solute in 160 g solution, mass percent is how much? a 60% b 20% c 40% 6 Which statement about mass percent is true? a It uses volume b It is independent of temperature c It is a molarity measure 7 How do you find the mass of solute from a given mass percent and total mass? a m_A = m_total × 100 b m_A = m_total / mass_percent c m_A = (mass_percent/100) × m_total 8 Convert 25% by mass to a decimal fraction. a 0.0025 b 2.5 c 0.25 9 Why is mass percent not affected by temperature changes? a Moles change with temperature b Mass does not change with temperature c Volume changes with temperature 10 Mass percent vs molarity: which is incorrect? a Mass percent uses mass b Molarity uses volume of solution c Mass percent equals molarity