What is the difference between a KCAL and a calorie? A kilocalorie is another word for what’s commonly called a calorie, so 1,000 calories will be written as 1,000kcals. The label will usually tell you how many calories are contained in 100 grams or 100 millilitres of the food or drink, so you can compare […]
How many electrons must be gained by S to achieve a stable electron configuration?
How many electrons must be gained by S to achieve a stable electron configuration? 2 electrons Which of the following would have to gain two electrons in order to achieve a noble gas electron configuration? Explanation: Elements located in group VIA needs to gain 2 electrons to achieve noble gas electron configuration. Oxygen (O) is […]
What are the 4 biotic factors in an ecosystem?
What are the 4 biotic factors in an ecosystem? Biotic and abiotic factors Biotic factors include animals, plants, fungi, bacteria, and protists. Some examples of abiotic factors are water, soil, air, sunlight, temperature, and minerals. What is the role of producers in most ecosystems? As producers are the first level in a food system, they […]
How do you convert from Polar to Rectangular?
How do you convert from Polar to Rectangular? To convert from polar coordinates to rectangular coordinates, use the formulas x=rcosθ and y=rsinθ. How do you convert polar numbers to rectangular without a calculator? Converting from Polar Form to Rectangular Form To convert from polar to rectangular, find the real component by multiplying the polar magnitude […]
Does an experiment need a control group?
Does an experiment need a control group? An experiment may include multiple experimental groups at one time. A control group is a group separated from the rest of the experiment such that the independent variable being tested cannot influence the results. While all experiments have an experimental group, not all experiments require a control group. […]
Where is pair production used?
Where is pair production used? Pair production also can occur in the field of an atomic electron, to which considerable recoil energy is thereby imparted. The threshold for such a process is four times the rest energy of an electron, or 4mc2. The total pair-production cross section is the sum of the two components, nuclear […]
When something is in motion it is changing?
When something is in motion it is changing? Something is in motion if it is changing position. It could be a fast-moving airplane, a leaf swirling in the wind, or water trickling from a hose. Even your school, attached to Earth, is moving through space. When an object moves from one location to another, it […]
What are the values of gas constant R?
What are the values of gas constant R? Gas constant Values of R Units 8.31446261815324 kg⋅m2⋅s−2⋅K−1⋅mol−1 Other Common Units 0.730240507295273 atm⋅ft3⋅lb⋅mol−1⋅°R−1 10.731557089016 psi⋅ft3⋅lb⋅mol−1⋅°R−1 What is the physical significance of gas constant R? Physically, the gas constant is theconstant of proportionality that happens to relate the energy scale in physics to the temperature scale, when a […]
Which is the property of alkynes?
Which is the property of alkynes? Alkynes are nonpolar, unsaturated hydrocarbons with physical properties similar to alkanes and alkenes. Alkynes dissolve in organic solvents, have slight solubility in polar solvents, and are insoluble in water. Compared to alkanes and alkenes, alkynes have slightly higher boiling points. Which is a property of both alkenes and alkynes? […]
How do you find the refractive index of oil?
How do you find the refractive index of oil? The refractive index of essential oils can easily be measured with an Abbemat refractometer. It can thus provide insight as to their quality. Does oil have the same refractive index as glass? You see a glass object because it both reflects and refracts light. When light […]