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Methanol is an alcohol that’s often used in laboratory experiments. Because it’s flammable and poses health risks, it’s important not to rinse methanol down the drain or combine it with other materials that may cause it to combust. To dispose…
A rational equation contains a fraction with a polynomial in both the numerator and denominator — for example; the equation y = (x – 2) / (x^2 – x – 2). When graphing rational equations, two important features are the…
As with social insects like wasps and bees, ant colonies have at their center an egg-laying queen. For many years, scientists believed that the development of a queen ant was very similar to that of a queen bee; in bee…
Cubic trinomials are more difficult to factor than quadratic polynomials, mainly because there is no simple formula to use as a last resort as there is with the quadratic formula. (There is a cubic formula, but it is absurdly complicated).…
Finches are a diverse, worldwide family of birds characterized by a stout, cone-shaped bill and elaborate, melodic singing. The male finch will often sport a bright, patterned plumage. Nesting habits of finches can vary according to species, but there are…
Things Needed 9-volt battery with battery holder Breadboard Potentiometer Multimeter Low Voltage Led Resistor Wire Switch (optional) A potentiometer, or “pot” for short, is also known as a variable resistor. Variable resistors are used to dynamically change the resistance to…
Understanding the heat production of a fuel is vital when designing a heating system for a building. Heat production from gas fuels such as propane or natural gas depends on the amount of gas burned measured in cubic feet per…
It can be very important to accurately identify types of metal when working with metal materials, and this is particularly important in maintenance welding. Proper identification of base metals helps minimize downtime and ensures maximum confidence of producing strong and…
Mushroom hunters discover a variety of delectable fungi throughout much of the year in Illinois. Puffballs, portobellos and morels are among the wild mushrooms growing seasonally in the state. Knowing when each edible species emerges determines when to look for…
If you have a specified volume of solution of known molarity, you can quickly determine how many millimoles (mmol) of the substance in question exist in your sample. From there, you can translate millimoles to milligrams (mg), at which point…
