How many protons and neutrons does the isotope chromium - 58 have?   for 14 points need answer before tomorrow

Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.

Suppose you have designed a new thermometer called the x thermometer. on the x scale the boiling point of water is 129 ? x and the freezing point of water is 13 ? x. part a at what temperature are the readings on the fahrenheit and x thermometers the same?

Which of these is not an example of chemical weathering? a. iron-rich mineral rusting b. feldspar turning into clay c. limestone reacting with acid d. granite breaking up into sand