Nitrogen (N) and hydrogen (H) react with each other to produce ammonia (NH3). This reaction is shown in an equation as N2 + 3H2 → 2NH3. What is the ratio of nitrogen atoms to hydrogen atoms in ammonia?

According to the tide table below what time of day will the highest tide occur?

How many moles are in 7.2 x 10^23 carbon molecules?

Which of the following describes qualitative data? a) recording the temperature of a solid as it is warmed. b) noting the color of a solution as it is heated. c) measuring the volume of an object by water displacement. d) taking the mass of an object using a balance.