Nitrogen

ABSTRACT Current response of ascorbic acid-stabilized copper (Cu) single nanoparticles (NPs) collision on gold (Au) ultramicroelectrode (UME) surface was observed by the electrocatalytic amplification method. When the applied potential to the UME was 0.4 V, blip (or spike) response of current, which is responsible for the self-oxidation of Cu NP, was obtained. When the applied potential was over 0.5 V, the blip response combined with staircase response was obtained. The blip part indicates the…

During the experiment, observations were made about their physical appearance. In part I, reaction one produced a blinding, bright white light when the metal burned and the metal turned into a white powdery substance. For reaction two, there was no reaction at first and it took a long time for it to react, but then bubbles started to form around the magnesium ribbon and the substance turned into a pink-yellowish color around the magnesium strip when it was placed in the 150 milliliters beaker.…

Kishan Patel Section: 008 Pattern: Calcium levels in the soil controls soil pH and species richness within a community Hypothesis 1: Calcium levels in the soil controls soil pH. Prediction: An increase in the calcium levels in the soil will make the soil less acidic. Reasoning: Calcium exists mainly in the soil as exchangeable cations (ca^2+) associated with basic anions, which reacts with soil acidity (H) to neutralize it. Analytical approach: Regression Independent variable: Calcium levels…

Plants gain a lot of nutrients in their daily lives. They get it mostly from water and also the soil. Water is a molecule made up of the following atoms, Hydrogen and Oxygen. In this molecule the electrons are not shared equally between these atoms. Electrons are negatively charged so if they spend more time around an atom the atom becomes negative. The electrons turn Oxygen negative because they spend more time together. The reason for the electrons to be around Oxygen is because Oxygen has…

The results of activity concentrations of the 226Ra, 232Th and40K in the Palm Date Pits samples has been presented in Table 5. In Table 5, the mean activity concentrations of 226Ra, 232Th, and 40K in Palm Date Pits samples are 5.684 ± 1.238, 2.790 ± 0.457, 181.090 ± 16.804 Bqkg-1, ranging from 1.343 ± 0.380 to 14.526 ± 3.932 Bqkg-1, 1.420 ± 0.322 to 6.379 ± 0.368 Bqkg-1 and 89.554 ± 9.621 to 252.242 ± 12.234 Bqkg-1, respectively. The high variation in activity concentrations of 226Ra, 232Th and…

The phosphorus cycle is the movement of phosphorus in the ecosystem. The cycle starts from the rocks which contain a lot of phosphorus compounds. As these rocks experience weathering, they break down and gets mixed into the ground. Sometimes it gets washed away in water. With this, plants are able to absorb P from the ground. The animals eat these plants and absorb P. The phosphorus returns to the soil through the wastes we release, and when the dead decompose. These then goes back to the…

How gunpowder changed warfare How gunpowder was invented is that some scientists in china were experimenting Saltpeter a powerful agent potassium nitrate. It was used in medical compounds for years until a man thought about mixing the potassium agent with sulfur and charcoal, it had a result of a mysterious powder. Some observers said that smoke and fire the scientist’s body parts were burnt and the houses that they were working at burnt down too. The powder was used by the reigning Sung…

People drinking water for many years that contains higher MCL for atrazine can suffer from cardiovascular or reproductive diseases. Also, it has ecological effects on birds and aquatic organisms, although it is only slightly toxic to birds and fishes found in those niches. Atrazine also inhibits photosynthesis in plants. In 1974, Congress passed the Safe Drinking Water Act. This law requires EPA to determine the level of contaminants in drinking water at which no adverse health effects are…

Agricultural bacteria, fertilizers and manure that is distributed throughout fields causes a rise in the groundwater’s concentration that exceeds the max containment level for intake. These excess levels of nitrate found in water are extremely hard on the human body, and can be lethal in infants (Holme). Mixing water with formula to feed a baby is a perfect example of how nitrites can enter an infant’s immature digestive system. In 1999, a 3-week old in Wisconsin suffered from…

Discussion The cleanliness of tap water is determined by comparing many different factors of the water’s composition to the acceptable or ideal levels that have been set for “healthy” water. The water samples from each city show that the tap water remains within an acceptable range. For instance, the acceptable level for Nitrate in water is 10 ppm, a maximum level enforced by the Environmental Protection Agency, and each city did not exceed that amount with the highest level being 5 ppm in one…