Given the reaction: 2 H2 (g) + O2 (g) – 2 H2O(l) + 571.6 kJ What is the approximate AH for the formation of 1 mole of H2O(l)?
1.
-285.8 kJ
2.
+285.8 kJ
3.
-571.6 kJ
4
+571.6 kJ

Water molecules have a strong attraction to each other because of hydrogen bonding, allowing water to move against gravity up a plant's stem through capillary action. true false

Agas diffuses 1/7 times faster than hydrogen gas (h2). what is the molar mass of the gas? 100.10 g/mol 98.78 g/mol 86.68 g/mol 79.98 g/mol

Which of the following is a conclusion that resulted from ernest rutherford’s scattering experiment? (will mark brainliest) a. the nucleus is negatively charged b. the atom is a dense solid and is indivisible c. the mass is conserved when atoms react chemically d. the nucleus is very small and the atom is mostly empty space