question6
Question 6
6.1 Methyl propanoate is an organic compound with the following percentagecomposition: 54,55% C ; 9,09% H ; 36,36% O The molar mass of the compound is 88 g∙mol-1. 6.1.1 Define the term empirical formula. (2) 6.1.2 Determine, by calculation, the empirical formula. (6) 6.1.3 Determine the molecular formula. (2) 6.2 Learners prepare a solution of … Read more
Question 6
A light ray from a ray box is incident on a rectangular glass prism and the path of the incident ray and emergent ray was traced to obtain the diagram below. The refractive index of air and the refractive index of a glass are 1,00 and 1,52 respectively. 6.1 State Snell’s law in words. (2) … Read more
Question 6
The diagram below shows a cup with a volume of 117π cm3 and an inner diameter of 60 mm. Ignore the thickness of the cup Calculate the: 6.1 Height of the cup (3) 6.2 Total surface area of the water that touches the cup if the cup is 80% full with water (4) [7]
Question 6
The cylinder in the diagram below has a diameter of 4x units and a height of h meters. Thecylinder is open at the top and the total surface area of the cylinder = 32π meters. Calculate the height of the cylinder in terms of x. (3) [3]TOTAL: 100
Question 6
6.1 Sketch the graphs of 𝑓 and 𝑔 on the same set of axes, using the provided diagram sheet. Clearly indicate all intercept points with the x-axis and the y-axis as well as any asymptotes. (6) 6.2 Using your graph, write down the coordinates of the point of intersection of 𝑓 and 𝑔 (where 𝑥 … Read more
Question 6
Sketched below are the graphs of the functions f(x) = cos x+q and g(x) = 2sin bx for xe [-60° ; 120° ]. 6.1 Write down the coordinates of the maximum turning point of g in the given interval. (1) 6.2 Determine the values of x where f is strictly increasing in the given interval. … Read more
Question 6
The gravitational force on a probe, called Curiosity, on the surface of Mars is 3 338 N.The radius of Mars is 3 390 km and the mass of the planet is 6,39 x 1023 kg. 6.1 State Newton’s Law of Universal Gravitation in words. (2) 6.2 Calculate the mass of the probe. (4) 6.3 Calculate … Read more
Question 6
6.1 In an experiment, a learner added 1,5 g of sodium carbonate (Na2CO3) tohydrochloric acid (HCℓ). A volume of 306 cm3 of carbon dioxide gas wasformed and collected under standard pressure at room temperature. Take themolar gas volume at room temperature (Vm) as 24,45 dm3. The unbalanced equation for the reaction is: Na2CO3(s) + HCℓ(aq) … Read more
Question 6
6.1 Determine the: 6.1.1 Equation of g (3) 6.1.2 Equation of h, the axis of symmetry of g which has a positive gradient (2) 6.2 Sketch the graphs of g and h on the same system of axes. Clearly show ALL the asymptotes and intercepts with axes. (4) 6.3 Write the equations of the asymptotes … Read more