Chemistry, 26.08.2020 18:01 Chanselor2743
Why was 1990 an important year regarding air quality?
O The United States took first steps to keep the air clean.
O The United States created the Environmental Protection Agency.
Modifications and improvements were made to the Clean Air Act.
O Funding was established under the Clean Air Act to study air pollution.
Answers: 1
Another question on Chemistry
Chemistry, 22.06.2019 23:30
The density of the solid phase of a substance is 0.90 g/cm3 and the density of the liquid phase is 1.0 g/cm3. a large increase in pressure will a. lower the freezing point b. raise the freezing point c. lower the boiling point d. raise the triple point e. lower the triple point
Answers: 1
Chemistry, 23.06.2019 04:30
Two liquids are poured into a beaker. after a few seconds, the beaker becomes warm. which of the following best describes this reaction? a. an exothermic reaction b. a decomposition reaction c. an endothermic reaction d. a single-displacement reaction
Answers: 1
Chemistry, 23.06.2019 08:30
Kelly has come up with an explanation for why her sister is sometimes in a good mood and other times in a bad mood. she speculates that it is based on the hours of sleep her sister got the previous night. this explanation for her sister's behaviors is an example of a(n)
Answers: 3
Chemistry, 23.06.2019 10:00
How many grams of cupric sulfate pentahydrate are needed to prepare 50.00 ml of 0.0800m cuso4× 5h2o?
Answers: 3
You know the right answer?
Why was 1990 an important year regarding air quality?
O The United States took first steps to keep...
Questions
Mathematics, 10.12.2021 23:00
Biology, 10.12.2021 23:00
History, 10.12.2021 23:00
Mathematics, 10.12.2021 23:00
Mathematics, 10.12.2021 23:00
Social Studies, 10.12.2021 23:00
Social Studies, 10.12.2021 23:00
Mathematics, 10.12.2021 23:00
