Where would you find the element with least mass? will give 20 point's and brainliest if answer is certified and correct. a. period 1, group 18 b. period 7, group 1 c. period 1, group 1 d. period 3, group 2

How much heat is released upon converting one mole of steam (18.0 g) from 100.0 ∘c to water at 25.0 ∘c? show work and constants, trying to figure out how it works. only given the heat capacity for steam and water so try to only use that

Select the correct answer how does the heat content of the reaction change in the process of photosynthesis when a glucose molecule is formed? ca the value of is negative the value of qis positive the value of a remains constant the value of a decreases the value of equals zero e

What are the spectator ions in 2h+ + so42- + ca2+ + 2r → caso4 + 2h+ + 21?