Acidified food - Study guides, Class notes & Summaries

EDEXCEL A LEVEL 2023 CHEMISTRY (ii) Explain which of chromium or calcium most easily forms a +2 ion using all of the data in the table. - correct answersCalcium forms 2+ more readily as the sum of 1 and 2 ionisation energies are lower Calcium has a lower nucleur charge So less attraction between outer electrons and nucleus (ii) Give a reason why the silver nitrate must be acidified. 1 - correct answersTo remove the carbonate ions 2 Chemists often use the term 'orbital' when consid...

Pelagic Habitat - CORRECT ANSWER-Open water habitat; studied most by limnologists Benthic habitat - CORRECT ANSWER-Habitat associated with the bottom substrate Littoral habitat - CORRECT ANSWER-Portion of the benthic habitat located above the compensation depth; Any habitat where rooted macrophytes grow Compensation depth - CORRECT ANSWER-Where there is enough light for net photosynthesis Heterophylly - CORRECT ANSWER-The variation among leaf morphology within one plant Periphyton...

GGH2604 - People And The Environment. As humans have colonised and modified the Earth’s surface, they have developed progressively more sophisticated tools and technologies. These tools have resulted in ozone depletion, acid rain, climate change, photochemical smog and a change in climate in Africa. 1. CAUSES OF OZONE DEPLETION There are two different types of ozone depletion, both are very similar. The first one has been a slow, but steady ozone depletion of 4% per decade of the earth’...

Air Pollution sulfur dioxide- comes from burning fossil fuels with high sulfur content, is an important precursor to acid rain carbon monoxide- has a stronger affinity for hemoglobin than oxygen has radon- comes from rocks below house foundations and has been implicated as the cause of as much as 15 percent of lung cancer cases Methane- a greenhouse gas, that is flammable and produced by landfills carbon dioxide- the major contributor to greenhouse effect, regulated by the Kyoto confere...

AQA A level Chemistry Questions and Answer (updated) 2022 Grade A Question:-What's the Test for a Carbonyl group? {{{Answer}}} (Brady's reagent (2,4 DNPH) Orange to yellow precipitate) Question:-Do Carbonyls have a lower or higher boiling point when compared to a corresponding Alcohol?{{{Answer}}} (Lower) Question:-Do Carbonyls have a higher or lower boiling point when compared to a corresponding Alkane?{{{Answer}}} (Higher) Question:-Do Carbonyls dissolve in water?{{{Answer}}} (...

CHM 331 INTRODUCTION TO INDUSTRIAL CHEMISTRY LECTURE NOTES WASTEWATER TREATMENT The principal objective of wastewater treatment is generally to allow human and industrial effluents to be disposed of without danger to human health or unacceptable damage to the natural environment. Irrigation with wastewater is both disposal and utilization and indeed is an effective form of wastewater disposal (as in slowrate land treatment). However, some degree of treatment must normally be provided to raw ...