When 250 cm³ of a saturated solution of CuSO4 at 30°C was evaporated to dryness; 5.0 g of the salt was obtained. What is the solubility of the salt at 30°C? [CuSO4 = 160]
A. 0.031 B. 0.125 C. 0.640 D. 1.560 Correct Answer: Option B = 0.125
What volume of oxygen at s.t.p is required to burn completely 7.5 dm³ of methane according to the following equation?
CH4 g + 202 g → CO2 g + H2Og A. 3.75 dm³ B. 7.59 dm³ C. 15.0 dm³ D. 30.0dm³ Correct Answer: Option C = 15.0 dm³ Explanation 1 mole of methane reacts with 2 moles of oxygen 1 vol of methane reacts with 2 vol of oxygen : 7.5 vol of methane will yield 15 vol of oxygen in...
The initial volume and pressure of a given mass of gas is V and 3P. What is its pressure if its volume is increased to 2V at constant temperature?
A. 3 P B. 2P C. 3/2 P D. 2/3 P Correct Answer: Option C = 3/2 P
If 5.0cm‾³ of 0.200 mol dm‾³ Na2CO3 was diluted to 250cm‾³ solution; what would be the concentration of the resulting solution?
A. 0.004 mol dm‾³ B. 0.020 mol dm‾³ C. 0.200 mol dm‾³ D. 0.400 mol dm‾³ Correct Answer: Option A = 0.004 mol dm‾³ Explanation M1V1 =M2V2 M1 = initial molarity V1 = initial volume in liters M2 = final molarity V2 = final volume in liters 0.200 X 5.00 = M2 X 250 M2 =...
Which of the following standard conditions is not correct about energy changes?
A. Standard temperature is 298K B. B. Standard pressure is 1 atm C. Concentration of the solution must be 1 mol/dm³ D. ΔH at 298 K is the activation energy Correct Answer: Option D – ΔH at 298 K is the activation energy Explanation The standard conditions of 1...Products
-
Download Business Administration Project Topic PDF - Effects of Job Stress on Employee’s Performance in Evans Nigeria
Original price was: ₦600.00.₦300.00Current price is: ₦300.00.
-
Download Accountancy Project Topic PDF - Effect Of Cost Control On The Profit Of An Organization (A Case Study Viju Milk Industries Nigeria Limited)
Original price was: ₦600.00.₦400.00Current price is: ₦400.00.
-
Download Animal Production Journal Article PDF - Performance of Some Forage Rass Species in the Southern Guinea Savannah Agro-Ecological Zone in Nasarawa State of Nigeria
Original price was: ₦600.00.₦300.00Current price is: ₦300.00.
-
Download Conference Paper Article PDF - Video Summarization Based Handout Generation from Video Lectures: A Gesture Recognition Framework
Original price was: ₦600.00.₦300.00Current price is: ₦300.00.
-
Download Conference on Advanced Computer Theory Article PDF - Real-Time Mono Vision Gesture-Based Virtual Keyboard System
Original price was: ₦600.00.₦300.00Current price is: ₦300.00.