16) The mass number of an element whose atoms have 12 protons and 13 neutrons is_

a) 12

b) 13c) 25 d) 12.5

Changes in color, energy, and odor are indications that a

What is the relationship between the volume of water and the dripping time?

How many electrons does Vanadium have on its highest energy level?

Eva pumps up her bicycle tire until it has a gauge pressure of 413 kilopascals. If the surrounding air is at standard pressure, what is the absolute pressure in the bicycle tire? A. 33.9 kPa B. 49.7 kPa C. 312 kPa D. 514 kPa

Measurements show that unknown compound X has the following composition: element mass % carbon 63.2%hydrogen 5.31%oxygen 31.6%Write the empirical chemical formula of X?

Which of the following statements is not a description of Saturn? Known for its rings Largest planet in the solar system One of the gas giant planets Has several moons

How come flowers usually contain more stamen the pistils

How much energy is needed to change 44 grams of ice at - 8° to steam at 107°?

What is the minimum total energy released when an electron and its antiparticle (positron) annihilate each other?

What tells you how many atoms of an element are in a compound?