Can you plug a volcano? If a volcano can’t erupt out its vent, then it will explode out of its sides. That, indeed, is why you really don’t want to put a plug into a volcano. What is an example volcanic neck? A volcanic neck is the “throat” of a volcano and consists of a […]
Do we know the entire human genome?
Do we know the entire human genome? Some scientists say it should be. The headline read: “Scientists Say Human Genome is Complete.” The truth is that that’s not true. The feat made headlines around the world: “Scientists Say Human Genome is Complete,” the New York Times announced in 2003. Are there at least 20000 human […]
Why blood is about 92 percent water?
Why blood is about 92 percent water? Plasma contains about 92 percent water. This water helps to fill up blood vessels, which keeps blood and other nutrients moving through the heart. What percent of blood is platelets? Whole blood contains red cells, white cells, and platelets (~45% of volume) suspended in blood plasma (~55% of […]
What type of heat transfer is an ice cube melting?
What happens to heat energy when ice is melting?
What happens to heat energy when ice is melting? When you heat ice, its temperature rises, but as soon as the ice starts to melt, the temperature stays constant until all the ice has melted. This happens because all the heat energy goes into breaking the bonds of the ice’s crystal lattice structure. What is […]
How do you use explain?
How do you use explain? We use the verb explain to mean ‘make something clear or easy to understand, by describing or giving information about it’. We can use explain with a direct object or with a direct object and a prepositional phrase with to (direct objects are underlined): How do you explain to and […]
Is CH4O an empirical formula?
Is CH4O an empirical formula? A compound is found to be made up of 71.9% Carbon; 12.13% Hydrogen; and 15.97% Oxygen. The compound has a molecular weight (molar mass) of 300.54. A compound with an empirical formula of CH4O has a molar mass (molecular weight) of 192 grams. Is C3H8O an empirical formula? An empirical […]
What is the energy content of methane?
What is the energy content of methane? Heat Values of Various Fuels Heat value Hydrogen (H2) 120-142 MJ/kg Methane (CH4) 50-55 MJ/kg Methanol (CH3OH) 22.7 MJ/kg Dimethyl ether – DME (CH3OCH3) 29 MJ/kg Can methane gas be used for energy? Methane is also the main ingredient in natural gas. Because methane can be captured from […]
What are vectors used for?
What are vectors used for? Most commonly in physics, vectors are used to represent displacement, velocity, and acceleration. Vectors are a combination of magnitude and direction, and are drawn as arrows. The length represents the magnitude and the direction of that quantity is the direction in which the vector is pointing. Where do we use […]