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Selenium

Selenium (Se) is a nonmetal (recognized a metalloid) related to sulfur and is often used in glassmaking. Although it can be toxic, it is needed in trace amounts for proper body function.

424 Questions

What is the atomic number of selenium?

Selenium, with the chemical symbol Se, is the chemical element with the atomic number 34.

What foods are good sources of Unununium?

No food. Unununium (Uuu) Is radioactive & artificial. It is present in 0% in humans. It has also been given a final name: Roentgenium(Rg).

What is carrageenan?

Carrageenan is a food additive derived from red seaweed. It is commonly used as a thickening or stabilizing agent in a variety of processed foods and beverages. Some studies suggest potential health concerns with carrageenan consumption, although regulatory authorities generally consider it safe in small quantities.

What is topsoil made of and where is it found?

About a thousand things ...

but a simple answer is sand (ground up rock) and worm poo.

In good topsoil there are hundreds or thousands of different organisms all working to break down organic matter.

Does cerium need to be refined if it is found in nature or is it made in the laboratory?

Cerium is found as a compound of many other rare earth metals, so it is processed using several acids and techniques that rely on the properties of the other metals and their compounds to remove them.

Is shim plates are required below base plate in metal building if levelling bolts are also there?

Shim plates may not be required if leveling bolts are present, as the bolts can be adjusted to ensure the base plate is properly leveled. However, shim plates can be used in conjunction with leveling bolts to provide additional support and stability, especially in situations where precise leveling is crucial. Ultimately, the decision to use shim plates below the base plate will depend on the specific requirements of the metal building and the level of precision needed.

Is dark urine color during pregnancy ok?

Dark urine color during pregnancy can be a sign of dehydration or an imbalance in your diet. It's important to drink plenty of water and eat a balanced diet to help regulate your urine color. However, if you're concerned or notice other symptoms, it's best to consult with your healthcare provider for further evaluation.

How much salt is in the human body?

"The human body contains many salts, of which sodium chloride (AKA common table salt) is the major one, making up around 0.4 per cent of the body's weight at a concentration pretty well equivalent to that in seawater. So a 50kg person would contain around 200g of sodium chloride - around 40 teaspoons. Since we lose salt whenever we sweat, it has to be continually replaced."

Answer 2

All salts present in human or any other animal are in ionic form as salts dissociate in water . Our body contain 1% salts in ionic form . This includes only inorganic salts .

What is the amount of BTUS the human body has at rest?

1 met = 1kcal/kg/hr 1kcal = 3.97 btu At rest, the human body expends about 0.8 met. So, a 70 kg person at rest generates 0.8 * (3.97 btu * 70 kg) every hour. That would be about 222 btu/hr, which is not a measure of watts, so.... Since 1 btu/hr = 0.293 watts, that same person generates 65.14 watts at rest.

Do pure races exist?

Biologically, there is no scientific basis for the concept of "pure races." Human populations have mixed and intermingled over thousands of years, leading to a diverse range of genetic markers across all groups. The idea of distinct and separate races is a social construct, not a biological reality.

Can you replace a selenium rectifier with a silicon rectifier?

The short answer is yes, usually. If you are working with an ultra high voltage stack all bets are off. For old stereos, etc. you need to estimate the peak reverse voltage and the current requirements. If you have documentation, use it, otherwise: rule 1. PIV is 30 volts per plate, divided by the formfactor: rule 1a. Formfactors: diode=1, half bridge (center tap)=2, bridge=4. rule 1b. Use the maximum of the above and the input electrolitic working voltage multiplied by 1.4, then round up to the next standard voltage within reason (silicon is cheap). rule 2. Assume 500mA per square inch of a single plate's area. rule 3. You may need to heatsink the new rectifier, especially if the current is over a few hundred mA. rule 4. Replace the electrolitics!!!! If the unit is old enough to have a selenium, they are well past the warentee. rule 5. If the voltage is low (under 10VDC) you may need to put a small valued resistor between the rectifier and capacitor. example: a 12 plate center tapped rectifier 1.5 inches square; 12*30=360V divide by 2 =180PIV area=2.25 square inches which gives a current requirement of a little over one amp so use a 1.5A 200PIV unit.

What are some deadly viruses that you can find in the human body?

Some deadly viruses that can be found in the human body include Ebola virus, yellow fever virus, Zika virus, and human immunodeficiency virus (HIV). These viruses can cause severe illness and even death if left untreated.

How long do you have to take vitamins c e zinc and selenium before you start producing more semen?

The average man produces only one tablespoon or less of semen. How much do you need? If you are tying to impregnate someone its more about how powerful it is then how much you have. Answer

Moringa is reported to help men's potency.

Is selenium a akali metal?

No. Selenium is a nonmetal belonging to oxygen family.

What is the configuration of selenium?

The configuration of Selenium involves setting up a WebDriver instance with desired capabilities, specifying the browser type and version, setting up the path to the driver executable, and configuring any additional desired options. This configuration allows Selenium to automate the chosen browser for web testing.

What elements with similar properties as selenium?

Oxygen, Sulphur, Selenium, Tellurium, Polonium, and Livermorium.

Have similar chemical properties as they are all in Group VIA (16).

However, the last two are radio-active and not found in the open lab.

What is the mass number of a selenium atom that has 31 neutrons?

The mass number of an atom is the sum of its protons and neutrons. Since selenium usually has 34 neutrons, an atom of selenium with 31 neutrons would have a mass number of 34 (31 neutrons + 17 protons).

Is there a food source for natural statins?

It is found most abundantly in Pig heart, but not at theraputic levels. You would have to eat 15 pounds of pig heart each in order to get the equivilent of 1,200 millgrams of the enzymes CoQ10.

What is the chemical formula of selenium tetrafluoride?

The chemical formula of selenium tetrafluoride is SeF4.

What is the noble gas configuration for selenium?

The noble gas configuration for selenium is [Ar] 3d10 4s2 4p4, which means it has the same electron configuration as argon, followed by 4d10 4p4 electrons.

Is selenium hard or soft?

If you mean the elements in their normal forms, F and Cl are gases, Br is a liquid, I is a solid.

If you mean their ligand hard/soft qualities as halide ions:-

the lighter ones are hard, Br- and I- soft