Which of the following is not a correct chemical equation for a double replacement reaction?
2 hno3 + mg(oh)2 yields 2 h2o + mg(no3)2
h3po4 + 3 naf yields 3 hf + na3po4
2 kno2 + baso4 yields k2so4 + ba(no2)2
ca + 2h2o yields ca(oh)2 + h2

Which characteristic of water it form droplets? a. low specific heat b. nonpolar structure c. high surface tension d. ability to dissolve substances

21. consider the following chemical reaction: n2+ o2 2 no if 10.0 g of n2 reacts with excess oxygen then how many grams of no can be formed? a) 10.7 g b) 21.4 g c) 32.9 g d) 42.8 g page 4 of 8

Animals that reproduce sexually either do it through external or internal fertilization. read the following statement and decide if it is true or false. birds reproduce through external reproduction which is because the female will then be able to protect the egg.