How many neutrons are in an atom with the atomic number of 15 and an atomic mass number of 34?
? 19
? 15
? 34

Describe the chemical reaction based on the chemical equation below. also, explain whether the equation is balanced.

Electrons are extremely important to what area of technology? a) anti-aging research b) household product development c) electronics d) drug discovery

Analyze how limestone is weathered and identify the features that are formed as a result of this dissolution