Sci-Math Clash: Battle of the Brains 2.0

Lorenzo is stranded on a desert island with access to saltwater from the ocean but no freshwater. Lorenzo needs to find a way to obtain drinkable water. What process can Lorenzo employ to separate the salt and impurities from the saltwater, allowing him to collect freshwater for survival?

(a)  

 Which chemical element, symbolically named after the Latin term for "liquid silver," has archaeological evidence of its presence dating back to 1500 B.C. in Egyptian tombs?

(a)  

• 1. -1, -½, 1, 2

• 1. -1, ½, 1, 2

• 1. -2, -1, -½, 1

• 1.  -2, -1, ½, 1

• 1. (4, 3)

• 1. (4, -3) 

• 1. (-4, -3)

• 1. (-4, 3)

1. Lemniscate is the shape of what mathematical symbol? 

• 1. Ampersand

• 1. Lambda

• 1. Epsilon

• 1. Infinity

• (2a+6)(a-6)

• (2a+6)(2a-6)

• 1. 2(a+6)(a-6)

• 1.  2(a+6)(a+6)

Sucrose, commonly known as table sugar, is a disaccharide consisting of one glucose and one fructose molecule. What is the correct chemical formula for sucrose?

• C₁₂H₁₁0₁₂

• C₁₂H₂₂0₁₂

• 1. C₁₁H₂₂0₁₂

• 1. C₁₁H₁₂0₂₂

1. Given the following data: 103, 104, 107, 108, 109, 110, 113, 114, 118, 121, 122, 125, 129, 130, 133, 135. What is the value of the 3rd quartile?

• 1. 127

• 1. 129

• 1. 125

• 1. 129.5

• (2,-5)

• (-5,-4)

• (2,-4)

• (5,-4)

1. If an electric company charges ₱12.30 for every kilowatt-hour, how much will it cost to use a 950-watt air-conditioning unit that is used for 12 hours per day for 30 days?

• ₱ 4,216.00

• ₱ 4,428.00

• ₱ 4,206.60

• ₱ 4,438.60