Category: Physics

Which equation should be used for a bomb calorimeter? Constant-Pressure Calorimetry In contrast, a bomb calorimeter ‘s volume is constant, so there is no pressure-volume work and the heat measured relates to the change in internal energy (ΔU=qV Δ U = q V ). Does a bomb calorimeter measure delta H directly? The combustible gas […]

What is the coldest month in Flagstaff AZ? January 4 What month does it snow in Flagstaff AZ? Flagstaff experiences intense sunny days as well as an average of 100 inches of snow during the winter months. Snow tends to come in late November and may last on the San Francisco Peaks until June. Is […]

Can fish love humans? In most cases though, yes, fish are able to recognize their owners and in some cases form an attachment. Many scientists that worked on the archerfish study report the fish appearing anxious and skittish if a stranger walked into the room, compared to a loving spit of water at a familiar […]

Is air lighter than water? 5 Answers. Air is lighter because there are fewer molecules per unit volume compared with a unit volume of liquid water. A mole of water is 18 grams, so a liter of water contains about 55 moles (1000 grams). A mole of air at standard temperature and pressure, however, occupies […]

When sugar is dissolved in water the resulting solution is classified as a? A mixture in which a substance has fully dissolved in water is called a solution and the substance is said to be soluble. An example of this type of mixture is sugar in water. Here the sugar dissolves fully to give a […]

How do you balance charges? Balance charge. Add e- (electrons) to one side of each half-reaction to balance charge. You may need to multiply the electrons by the two half-reactions to get the charge to balance out. What is redox reaction explain with an example? Every chemical reaction in which the oxidation number of a […]

What is the intensity of a 40 dB sound? The Threshold of Hearing and the Decibel Scale The faintest sound that the typical human ear can detect has an intensity of 1*10-12 W/m2. How many times louder is 20 dB? For the decibel scale, that number is 10. A 20 dB sound is 10 times […]

How many tidal bulges are there in a day? two tidal What causes tidal forces? Gravity is one major force that creates tides. In 1687, Sir Isaac Newton explained that ocean tides result from the gravitational attraction of the sun and moon on the oceans of the earth (Sumich, J.L., 1996). Why do tidal forces […]

What is the principle of calorimetry? The principle of calorimetry indicates the law of conservation energy, i.e. the total heat lost by the hot body is equal to the total heat gained by the cold body. What is the calorimetry method? Calorimetry method Measure a volume of an acid and place into a polystyrene cup […]

How is aspartate Transcarbamoylase regulated? Regulation of De Novo Pyrimidine Biosynthesis In prokaryotic cells aspartate transcarbamoylase, an allosteric protein, is inhibited by the end product CTP and activated by ATP. Why is it important to regulate ATCase? The cell must precisely regulate the amount of CTP in the cell because making it can be energetically […]