Which detector is used in HPLC? HPLC Detectors UV-Vis Detectors. The SPD-20A and SPD-20AV are general-purpose UV-Vis detectors offering an exceptional level of sensitivity and stability. Refractive Index Detector. Fluorescence Detectors. Evaporative Light Scattering Detector. Conductivity Detector. What should we do first before using the HPLC instrument? Before the freshly prepare mobile phase is pumped […]
What was the first planet discovered by mathematical prediction quizlet?
What was the first planet discovered by mathematical prediction quizlet? Neptune Which property best quantifies inertia? Mass Which of these properties of an object best quantifies its inertia quizlet? Which of these properties of an object best quantifies it’s inertia: velocity, acceleration, volume, mass or temperature? Mass best quantifies inertia. What determines how much momentum […]
Why is alkaline hydrolysis preferred?
Why is alkaline hydrolysis preferred? Hydrolysis using dilute alkali There are two big advantages of doing this rather than using a dilute acid. The reactions are one-way rather than reversible, and the products are easier to separate. Why is hydrolysis reversible? Hydrolysis is a reversible reaction, meaning that the alcohol and acid groups can react […]
What is sodium-22 used for?
What is sodium-22 used for? use of sodium Of the radioactive artificial isotopes, sodium-22 (2.6-year half-life, the longest half-life of a sodium isotope) is used as a radioactive tracer for natural sodium. Sodium-24 (15-hour half-life) is limited in use by its short life and is produced by irradiation in a nuclear reactor. Is sodium-22 stable? […]
How do you increase the mechanical advantage of a screw?
How do you increase the mechanical advantage of a screw? Screws move objects to a greater depth (or higher elevation) by increasing the force applied to the screw. The mechanical advantage of a screw is always greater than 1 because the output force applied by the screw is greater than the input force applied to […]
When was the last magnetic reversal?
When was the last magnetic reversal? The reversal was dated to approximately 15 million years ago. In August 2018, researchers reported a reversal lasting only 200 years. But a 2019 paper estimated that the most recent reversal, 780,000 years ago, lasted 22,000 years. How long does it take for Earth magnetic field to reverse? about […]
Can a room be cooled indefinitely by leaving the door of the refrigerator open?
Can a room be cooled indefinitely by leaving the door of the refrigerator open? No, the room can’t be cooled by leaving the door of an electric refrigerator open. In fact the temperature of the room rises because the refrigerator extracts heat from the freezing chambers and rejects it to the surrounding air in the […]
Does standing next to a microwave cause cancer?
Does standing next to a microwave cause cancer? Microwaves are therefore not known to damage DNA inside cells, according to the American Cancer Society. As a result, there is “little cause for concern” about excess microwaves leaking out from your oven, unless there is damage to the door hinge, latch or seal, the FDA says. […]
What is the direction of a vector?
What is molecular mass also known as?
What is molecular mass also known as? Molecular mass is also called molecular weight. Because the mass is relative to carbon-12, it’s more correct to call the value “relative molecular mass”. A related term is molar mass, which is the mass of 1 mol of a sample. Molar mass is given in units of grams. […]