Usha wants to find out whether the temperature of the water makes any difference to the rate at which salt dissolves. She has planned 6 setups P, Q, R, S, T, and U.
Answers
Rani wants to find out whether the temperature of water makes any difference to the rate at which salt dissolves. She has planned 6 set ups P, Q, R, S, T and U. Which TWO set ups below should she use? * 1 point Water Amount of salt Temperature (°C) 25 Р 100 ml 200 ml 3g Q 25 R. S 100 ml 200 ml 100 ml 25 50 50 3g 69 9g 3 g 6 g T U h 200 ml 50 O a P and R O b.Q and s O c P and T O d. S and U
Answer: It is D
Explanation: It is D because as the salt and other ionic compounds like it will dissolve faster the hotter the water it is dissolved in So when the water is hot it will disolve fast
In S and U.
S has been added 200 ml and the temprature of the water is 50 and the amount of salt is 9 grams so it will disolve fast
U has also been added 200 ml and the temprature is also in 50 and the amount of salt is 6 grams so that will disolve faster.