How many protons, electrons, and neutrons does an atom with atomic number 50 and a mass number of 125 contain? a) 50 protons, 50 electrons, 75 neutrons
b) 75 electrons, 50 protons, 50 neutrons
c) 120 neutrons, 50 protons, 75 electrons
d) 70 neutrons, 75 protons, 50 electrons

What element breaks down into yttrium-90?

According to the tide table below what time of day will the highest tide occur?

Select the correct answer. when carbon dioxide dissolves in water, it sometimes reacts with water to form carbonic acid as in this balanced equation: co2 + h2o → h2co3. if 495 milliliters of carbon dioxide at 25°c and 101.3 kilopascals reacts with excess water, what is the theoretical yield of carbonic acid? use the periodic table and the ideal gas resource a. 0.889 g b. 1.10g c. 1.27g d. 2.02g what's the answer! quick!