31. When the equation H2 + V205 → V +
is completed and balanced, one term in the balanced
equation is
(a) 2 V205
(c) 2 V
(b) 3 H2O
(d) 8 H

Ineed with my science work! it’s due tomorrow!

1. calculate the approximate enthalpy of the reaction in joules. estimate that 1.0 ml of vinegar has the same thermal mass as 1.0 ml of water. iqnore the thermal mass of th sodium bicarbonate. note: it takes about 4.2 joules () to change 1.0 gram (1.0ml) of water 1.0 c

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line