An isotope of mercury has 80 protons and 120 neutrons. whatis the mass number

Copper is used for electrical wirin g and cooking pans however iron is much more common on earth than copper why might copper be used instead of iron if iron is easier to maintain

If you have 38 grams of CH4 how many moles of CH4 do you have 0.42 moles 2.3 moles 609.6 moles 38 moles

75. In Canada and the United Kingdom, devices that measure blood glucose levels provide a reading in millimoles per liter. If a measurement of 5.3 mM is observed, what is the concentration of glucose (C6H12O6) in mg/dL?

Consider the combustion of ethylene, C2H4 (g) + 3O2 (g) →2CO2 (g) + 2H2O (g). If the concentration of C2H4 is decreasing at the rate of 3.

Sodium chloride is composed of molecules that are stable when dry. in the presence of water, however, the atoms that compose the molecules separate from each other. what type of chemical bond holds the dry substance together?

You are trying to recrystallize compound X. You consider using ethyl acetate as your recrystallizing solvent and test a small amount of compound X with ethyl acetate.

Which quantity represented by the symbol Ne

Electron configurations are like an address because?

What are the pros of using steel?

For an experiment, a student needs 100.0 mL of 0.4220 M NaCl. If the student starts with NaCl (s) and distilled water, which of the following pieces of laboratory glassware should the student use to prepare the solution with the greatest accuracy?