You and your friends are at the park on a sunny day, and you are playing on the slide. as you sold down, the hot slide burns your legs . explian why this happened and why you didn't burn your hands when you climbed up the rope ladder

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

Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)

What is the number of neutrons in an atom with atomic mass of 35