H pls help
1) If a neutral element has an atomic number of 18 and an atomic mass of 39.95, how many of each subatomic particle does it have?
2) Why are there many, but limited, combinations of elements to make all compounds?
3) Describe the properties of acids and bases. How are salts formed?
4) Explain the differences between mixtures and pure substances.
1) If a neutral element has an atomic number of 18 and an atomic mass of 39.95, how many of each subatomic particle does it have?
2) Why are there many, but limited, combinations of elements to make all compounds?
3) Describe the properties of acids and bases. How are salts formed?
4) Explain the differences between mixtures and pure substances.
Answers: 1
Chemistry, 22.06.2019 09:40, kolibeilfuss
Sulfur dioxide and oxygen react to form sulfur trioxide during one of the key steps in sulfuric acid synthesis. an industrial chemist studying this reaction fills a 25.0l tank with 4.5 mol of sulfur dioxide gas and 4.5 mol of oxygen gas at 30.°c. he then raises the temperature, and when the mixture has come to equilibrium measures the amount of sulfur trioxide gas to be 1.4 mol. calculate the concentration equilibrium constant for the reaction of sulfur dioxide and oxygen at the final temperature of the mixture. round your answer to 2 significant digits.
Answers: 3
Chemistry, 22.06.2019 11:40, tatemelliott
Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.
Answers: 3
H pls help
1) If a neutral element has an atomic number of 18 and an atomic mass of 39.95, how many...
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