Can Somebody Please Help Me ? Which of the following is true statement about isotopes? A. The number of protons always equals the number of neutrons in all isotopes. B. The number of protons never equals the number of neutrons in an isotope. C. Different isotopes for the same element will always have the same numbers of neutrons. D. Different isotopes for the same element always have the same number of protons.
Now, address the Focus Question: Orange juice, Jello, and mayonnaise—what makes them different? In answering this question, classify each mixture as a solution, colloid, or suspension and indicate the properties that each would exhibit. Your answer should reflect what you've learned through this inquiry. Use complete sentences and provide details.
Can Someone Help ? !5 Points!!! If the weight of displaced water is greater than the weight of an object, then the object will: A. float B. sink C. sink, then float An object will float when: A. buoyant force is equal to the weight of the object B. buoyant force is less than the weight of the object C. density is equal to the weight of the object D. density is greater than the weight of the object What is the buoyancy force on a 15 g object which displaces 60 mL of water? (Remember to change mL of water to grams and grams to kg) A. 900 N B. 25 N C. 0.59 N D. 0.25 N An object has a density of 20 g/cm3. When placed in a cylinder, it displaces 5 mL of water. What is the mass of the object? A. 0.25 g B. 4.0 g C. 100.0 g Substance has a mass of 16.2 grams. It displaces 8.1 grams of water. What is its specific gravity? A. 2.0 B. 5.5 D. 131.22
Which chemical equation shows that no atoms are lost during a chemical reaction? A- 8Fe + S8 ----> FeS B- 8Fe + 8S8 ----> 8FeS C- Fe + 8S8 ---> FeS D- 8Fe + S8 ---> 8FeS
An object of mass 20 kg is raised vertically through a distance of 8.0 m above ground level. Using g=10 m/s^2 what is the potential energy of this object at this position? A.)160 Nn B.)1600 Nm C.)160 N/m D.)1600 N/m
the ratio of kinetic energy to the potential energy of a certain object of mass m at a height of 40 m above ground level is 2:1. What is the speed of the object at the point? Use g=10 m/s^2 A.)20 m/s B.)40 m/s C.)30 m/s D.) 10 m/s
