When traveling from oxygen to sulfur to selenium, through this group in the periodic table, what is changing?

what is the specific heat capacity 82.4g of a metal that is absorbed 846 joules of heat as the temperature increases from 25c to 67c

What SI unit is used to measure energy? A. joule B. calorie C. gram D. degree

What mass of oxygen gas is produced by the reaction of 3.8 g of ammonium perchlorate?

four students measured the mass of a piece of metal whose accurate mass is 34.75g. their result are 34.2g, 33.75g, 35.0g and 34.69g. what is the best estimate for the mass of the piece of metal? and why?

The continents of earth were clutered to gether in formation that a scientist named what

A silver coin rubs vigorously against a wool cloth. becomes positively charged. Which statements are true? The silver coin lost electrons. The silver coin gained electrons. The wool cloth lost electrons. The wool cloth gained protons.

C2H4 + O2 → 2C + 2H2O Mg + H2O → MgO + H2 N2 + 2O2 → 2NO2 S + O2 → S + H2O Which of the following is a valid combustion reaction?

In general, why would a thermometer increase in temperature? What happens with the energy involved?

What is the kinetic energy of the emitted electrons when cesium is exposed to UV rays of frequency 1.6*1015Hz?

For the reaction H2SO4 + 2Na2OH4 - > Na2SO4 + 2H2O If you want to make 5 moles of Na2SO4, how many miles of H2SO4 do you need? A) 5 B) 10 C) 12 D) 2