The graph below shows the amount of Oxygen (O2) used and Carbon Dioxide (CO2) produced during cellular respiration. GAS LEVELS DURING CELLULAR RESPIRATION Hoy hung 12 19 Hours Based on the graph above, which of the following statements are evidence of the relationship between the levels of oxygen and carbon dioxide during cellular respiration? As the level of oxygen decreases., the level of carbon dioxide increases O The amounts of oxygen and carbon dioxide are constant over time. The amounts of oxygen and carbon dioxide are increasing over time. The amounts of oxygen and carbon dioxide are decreasing over time.

we can conclude that the melting point of table salt is above room temperature (it's actually 801 deg c). the melting point of mercury must be below room temperature (- 39 deg c).

because natural gas is colorless, odorless, and tasteless, distributors add mercaptan (a chemical that smells like sulfur) to give natural gas a distinct unpleasant odor (it smells like rotten eggs). they locate the types of rock that are likely to contain natural gas deposits.

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.