The fraction of solar energy reflected back to space due to Earth's cloudiness or snow and ice cover is known as

When a neutral charge, comes into contact with a positive charge they repel each other nothing happens the neutral charge becomes negative they attract each other

True or false when elements combine to form a mixture, the resulting chemical properties may be very different from those of the elements that make it.

(a) calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 10.0 g. silver has 47 electrons per atom, and its molar mass is 107.87 g/mol. (b) imagine adding electrons to the pin until the negative charge has the very large value 1.00 mc. how many electrons are added for every 109 electrons already present