One isotope of sodium has 11 protons and 7 neutrons. What is the mass number of this isotope?

Which best describes the forces identified by Newton's third law of motion? equal and acting on different objects equal and acting on the same object unequal and acting on different objects unequal and acting on the same object

A Revolução Industrial, que iniciou na Inglaterra, promoveu um grande avanço para o processo de industrialização, que se expandiu para todo o mundo. Porém, causou também prejuízos. O que é correto afirmar sobre esses prejuízos?

Research the potential for a large earthquake off the coast of Oregon. What are two of the biggest concerns with a large earthquake in this area?

John found an insect crawling on the sidewalk. It was 3 cm long. How many millimeters long was it? A. 3 mm B. 30 mm C. 300 mm D. 3000 mm

7. What determines whether a charged object gains or loses electrons? 8. Which is more likely to generate static electricity-rubbing Teflon and styrene or rubbing styrene and rabbit fur? Explain. 9.

Which of these atoms is most likely to share electrons with other atoms?

A rapidly moving cold air mass meets a slowly moving warm air mass and forms a front. what will most likely occur at this front?

It is believed that during the late Cretaceous period sea levels rose drastically resulting in about a third of the Earth's present land masses being underwater. Which of the following types of evidence supports this theory? A.

On a drive from one city to? another, victor averaged 39 mph. if he had been able to average 72? mph, he would have reached his destination 11 hrs earlier. what is the driving distance between one city and the? other?

A motorcycle has a constant speed of 24.3 m/s as it passes over the top of a hill whose radius of curvature is 182 m. The mass of the motorcycle and driver is 391 kg.