2. answer the following problems about gases. (a) the average atomic mass of naturally occurring neon is 20.18 amu. there are two common isotopes of naturally occurring neon as indicated in the table below. isotope ne-20 ne-22 mass (amu) 19.99 21.99 (i) using the information above, calculate the percent abundance of each isotope.

Is this a scientific model? use complete sentences to explain why or why not. a graphic organizer showing the water cycle i need : ( asap i go it never mind

Will give brainliest it is a lab from k12 here is the linkfor each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. type your answer here. (score for question 3: of 5 points) were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. type your answer here. (score for question 4: of 5 points) make a general statement about the reactivity of the metals in this experiment. type your answer here.

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?