Chemistry, 03.11.2019 19:31 kiwipitts4856
During a chemical change, substances react to form a new substance. some signs of chemical change are gas formation, a change in color, or the production of heat. do you think the reaction between calcium carbonate and vinegar is a chemical change? why?
Answers: 1
Chemistry, 22.06.2019 06:30
What is the correct term for living the most sustainable life you can within your current circumstances?
Answers: 1
Chemistry, 22.06.2019 16:00
The chemical equation below shows the reaction of sodium (na) and chlorine (cl) to form sodium chloride (nacl). 2na + cl2 → 2nacl in this equation, which of the following is a reactant? i. sodium ii. chlorine iii. sodium chloride
Answers: 1
Chemistry, 22.06.2019 16:00
Click the button that shows the correct relationship of the electron affinities of the elements sodium and phosphorus. sodium’s electron affinity value is more negative than the electron affinity value of phosphorus. phosphorus’ electron affinity value is more negative than the electron affinity value of sodium. this information cannot be determined using the periodic table. answer is b on e2020.
Answers: 3
Chemistry, 22.06.2019 16:50
Assuming complete dissociation of the solute, how many grams of kno3 must be added to 275 ml of water to produce a solution that freezes at -14.5 c? the freezing point for pure water is 0.0 c and k_f is equal to 1.86 c/m
Answers: 3
During a chemical change, substances react to form a new substance. some signs of chemical change ar...
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