0
What else can I help you with?
What is the synonyms of preceded?
Before, previously.
Is previously an adverb?
Yes, "previously" is an adverb. It is used to indicate that something occurred at an earlier time or before a particular point in time. For example, in the sentence "She had previously lived in New York," it describes when she lived there in relation to the present.
What was Richard Nixon's political career up to 1968. how did Nixon position himself as a presidential candidate in 1968?
Nixon was previously vice-president under Eisenhower, and before that he was a senator and congressman from California.
Are grapefruit artificially colored before shipping?
Sometimes harmless dyes are added to improves the fruit's appearance. When they are sent to a packinghouse, they are washed and treated with decay controlling chemicals.
How did you heat your homes before gas central heating?
people used to use coal fires, and gas and electric fires have been round for years and years, but coal fires was the prefered method
Use of Bunsen burner?
A Bunsen burner is used in laboratories to produce a single open gas flame for heating, sterilizing, or combustion purposes. It works by allowing gas (usually natural gas or propane) to mix with air in a controlled manner before being ignited. Adjusting the air inlet controls the type of flame produced, with a blue, hot flame used for heating and a yellow, cooler flame for sterilizing.
How does a Bunsen burner help us?
A Bunsen burner helps us by providing a controlled and adjustable flame for heating, sterilizing, and carrying out chemical reactions in a laboratory setting. It allows for precise temperature regulation and efficient heating of substances.
When would a Bunsen burner be used?
To heat-start a chemical reaction. Also it can be used for flame testing of cations. Modern labs. used electric or steam mantles for heating a reaction, because the temperature can be controlled. The Bunsen burner was invented by the German Chemist, Robert Chemist, in the late 19th century, before e;ectric/steam mantles were invented.
Why does the sample need to be heated over a Bunsen burner before heating in dry ashing?
The scope is to eliminate water, volatile compounds, substances easily thermodegradable before the calcining in a muffle furnace.
Why is the sample needed to be heated over a Bunsen burner before heating in a muffle furnace?
Heating the sample over a Bunsen burner helps remove any moisture or volatile impurities that may be present on the surface of the sample. This preheating step ensures that the sample is clean and free of contaminants before being subjected to high temperatures in the muffle furnace, helping to prevent unwanted reactions or interference with the analysis.
Where does the gas in a Bunsen burner originate?
The gas in a Bunsen burner typically originates from a propane or natural gas source connected to the burner via a tubing system. This gas is then regulated by a control valve on the burner before being mixed with air and ignited to produce a flame for heating or sterilization purposes.
What was used before the Bunsen burner?
A small fire. Remember, people didn't need Bunsen burners until they needed a constant source of heat. By the time that science required such a thing, manufacturing had advanced to the point where Bunsen burners were easy to create.
Why is an wire loop heated in a Bunsen burner?
A wire loop is heated in a Bunsen burner to sterilize it before use in microbiological procedures, such as inoculating cultures. Heating the loop to red-hot temperatures helps to kill any microorganisms present on the loop, reducing the risk of contamination during experiments.
What is a gas spud on a Bunsen burner?
A gas spud on a Bunsen burner is the nozzle where the gas emerges and mixes with air before being ignited. It controls the flow of gas and helps regulate the flame's size and intensity. Proper adjustment of the gas spud is essential for achieving the desired flame for heating or sterilizing purposes in laboratory settings.
Is heating up leftovers in plastic containers bad?
Heating up leftovers in plastic containers can be harmful as the chemicals in the plastic can leach into the food. It is safer to transfer the food to a microwave-safe glass or ceramic container before reheating.
What was used before Bunsen burner?
An alcohol burner was used.
Where do you store a Bunsen burner?
A Bunsen burner should be stored in a designated area in the laboratory that is clear from any flammable materials or sources of ignition. It is important to keep it in a safe place where it will not be knocked over or damaged.
