What are people doing about ocean acidification? The most effective way to limit ocean acidification is to act on climate change, implementing solutions to dramatically reduce the use of fossil fuels. If we dramatically cut our global warming emissions, and we limit future warming, we can significantly reduce the harm to marine ecosystems. What are […]
What is the best solvent for recrystallization?
What is the best solvent for recrystallization? For a solvent pair, the first solvent should readily dissolve the solid. The second solvent must have a lower solubility for the solute and be miscible with the first solvent. Common solvent pairs include ethyl acetate and hexane, toluene and hexane, methanol and dichloromethane, and water and ethanol. […]
What is the purpose of frequency table?
What is the purpose of frequency table? The frequency table records the number of observations falling in each interval. Frequency tables are useful for analyzing categorical data and for screening data for data entry errors. Note that we will refer to two types of categorical variables: Categorical and Grouping or Break. How do you know […]
What is the shortest period of time?
What is the shortest period of time? Scientists have measured the shortest unit of time ever: the time it takes a light particle to cross a hydrogen molecule. That time, for the record, is 247 zeptoseconds. A zeptosecond is a trillionth of a billionth of a second, or a decimal point followed by 20 zeroes […]
Why is velocity zero at pitot tube?
Why is velocity zero at pitot tube? At the open end of the pitot tube the velocity of the fluid becomes zero. But that should result in accumulation of liquid inside the pipe which is not possible. Why is stagnation point important? The stagnation point represents the location of the start of the leading edge […]
Which is not characteristic of pure substance?
Which is not characteristic of pure substance? the characteristics which does not represent a pure substance is that they are made up of different types of particles. Explanation: pure substances include elements and compounds. They have same boiling and melting point. What are the types of pure substance? The two main types of pure substances […]
Can you catch a bloodborne disease if someone sneezes or coughs on you?
Can you catch a bloodborne disease if someone sneezes or coughs on you? Bodily fluids can also splash into the eyes and cause infection. You cannot catch a bloodborne disease when an infected person touches you or sneezes and coughs on you. Also, you will not contract a bloodborne disease from a toilet seat or […]
What kind of energy would a textbook lose if you dropped it off of a building?
What kind of energy would a textbook lose if you dropped it off of a building? The book’s potential energy can be released by knocking it off the table. As the book falls, its potential energy is converted to kinetic energy. When the book hits the floor this kinetic energy is converted into heat and […]
What does a ray diagram show?
What does a ray diagram show? A ray diagram shows how light travels, including what happens when it reaches a surface. with an arrowhead pointing in the direction that the light travels. What is difference between erect and inverted image? erect image is always virtual & erect image is always formed by convex and plane […]