There are a lot of molecules in H2O.<span />
4 is sound energy and electrical 5 is nuclear energy 5 is mechanical
Some physical properties change, but the substance keeps its identity.
When dealing with these kind of questions, understand that the keyword here is physical change. Thus, all options that says no physical properties change are WRONG. So this leaves us with only 2 answers left. However, this is a physical change, no chemical change. Thus, the substance will keep its identity and not change.
Answer:
Explanation:
. The Haber Process involves nitrogen gas combining with hydrogen gas to produce ammonia If 10.0 grams of nitrogen gas combines with 10.0 gram of hydrogen gas, find the following the molar mass of reactants and products, the limiting reactant, the excess reactant, the amount of ammonia produced, the amount of excess chemical not used in the reaction Score Nitrogen gas + hydrogen gas -> ammonia gas Match the terms to the correct answers. (Hint: write your chemical equation and balance it first) Terms Answers Hydrogen gas Nitrogen gas 28.02 grams 2.02 grams 17.04 grams 12.16 gram 7.86 grams A. The amount of excess reagent not used in the reaction B. The amount of product produced C. The excess reagent D. The limiting reagent E. The molar mass of ammonia F. The molar mass of hydrogen G. The molar mass of nitrogen gas 1. 2 4 7.
the answer should be letter B because the killer whales eat the fish which makes the population decrease, but if there were no killer whales, the fish population would go up
