Which of the following solutions has the highest pH?

here are the solutions to your questions: 19. Internal body temperature is regulated in animals by Homeostasis* is the process by which living organisms maintain a stable internal environment, including the regulation of body temperature. A. homeostasis 20. A substance that accepts a proton is called According to the Brønsted-Lowry theory, a base* is defined as a proton (H^+) acceptor. D. a base 21. A machine has an efficiency of 55.56\% and a mechanical advantage of 5. Determine the velocity ratio of the machine. Step 1: Recall the formula for efficiency. Efficiency () is given by the ratio of mechanical advantage (MA) to velocity ratio (VR), expressed as a percentage: = MAVR × 100\% Step 2: Rearrange the formula to solve for velocity ratio (VR). VR = MA × 100\% Step 3: Substitute the given values and calculate VR. Given MA = 5 and = 55.56\% = 0.5556. VR = (5)/(0.5556) VR ≈ 9.00 B. 9 22. Mushrooms belong to the kingdom Mushrooms are a type of fungus and are classified under the kingdom Fungi*. B. Fungi 23. An empty plastic bottle floats in water because its An object floats in a fluid if its overall density is less than the density of the fluid*. An empty plastic bottle contains air, making its average density less than that of water. D. density is less than that of the water 24. A substance which increases the rate of a reaction without undergoing chemical change is also A catalyst* is a substance that increases the rate of a chemical reaction without being consumed or undergoing a permanent chemical change itself. C. a catalyst 25. Which of the following types of pollution occur at cities with many vehicles? Cities with many vehicles experience air pollution from exhaust fumes, noise pollution from engines and traffic, and land pollution* from discarded vehicle parts, oil leaks, and litter. B. I, II and III 26. Which of the following solutions has the highest pH? The pH scale measures acidity or alkalinity. A higher pH indicates a more alkaline (basic) solution. Among the given options, sodium hydroxide* (NaOH) is a strong base, which will have the highest pH. Ammonia is a weak base, while ethanoic acid and hydrochloric acid are acids (weak and strong, respectively), having lower pH values. D. 0.5\,mol\,dm^-3 of sodium hydroxide 27. The statement, to every action there is an equal and opposite reaction is This statement is the definition of Newton's third law of motion*. C. Newton's third law of motion 28. Which of the following statements is true about a car travelling at constant speed on a level ground? If a car is travelling at a constant speed on level ground, and assuming it's moving in a straight line, its velocity is constant. Therefore, its acceleration is zero. A. Not accelerating 29. Electric current is measured using An ammeter* is an instrument specifically designed to measure electric current in a circuit. B. an ammeter What's next?