So a sodium atom takes up 15154086 square picometers. It is an excellent thermal and electrical conductor. estimate the volume, V, of one sodium atom (Na) using its metallic radius of 186pm? 10 years ago. 1 Answer. [89] Sodium is the most prevalent metallic ion in extracellular fluid. A bird flapping it's wings is in free fall. need answer in pm^3? Halchemist. 1cm³ = 10^30pm³. Chemistry. pi= 3.1416. v=2.70 E7pm^3. [74] Another heat transfer application is poppet valves in high-performance internal combustion engines; the valve stems are partially filled with sodium and work as a heat pipe to cool the valves. If the diameter... A sphere has cross sections that are circles. 0 0. reb1240 . 2 Answers. Find the volume of the following solid figure. If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices. Sodium and mercury form NaHg, NaHg4, NaHg2, Na3Hg2, and Na3Hg. Many other stars appear to have a sodium absorption line, but this is actually caused by gas in the foreground interstellar medium. [83] (Note that salt contains about 39.3% sodium[84]—the rest being chlorine and trace chemicals; thus, 2.3 g sodium is about 5.9 g, or 5.3 ml, of salt—about one US teaspoon. [59] Sodium hydride is used as a base for various reactions (such as the aldol reaction) in organic chemistry, and as a reducing agent in inorganic chemistry. Still have questions? [25] For example, 15-crown-5 has a high affinity for sodium because the cavity size of 15-crown-5 is 1.7–2.2 Å, which is enough to fit the sodium ion (1.9 Å). [71] Radioactive sodium-24 may be produced by neutron bombardment during operation, posing a slight radiation hazard; the radioactivity stops within a few days after removal from the reactor. [81], Studies have found that lowering sodium intake by 2 g per day tends to lower systolic blood pressure by about two to four mm Hg. Relevance. [26][27] Cryptands, like crown ethers and other ionophores, also have a high affinity for the sodium ion; derivatives of the alkalide Na− are obtainable[28] by the addition of cryptands to solutions of sodium in ammonia via disproportionation. I'm using the formula for a sphere, (4/3)*pi*r^3, but I can't seem to get the right answer. This calculation is based on the idea of an atom as a sphere, which isn't precisely accurate. The reaction produces caustic soda (sodium hydroxide) and flammable hydrogen gas. However, sodium exposed to air and ignited or reaching autoignition (reported to occur when a molten pool of sodium reaches about 290 °C)[101] displays a relatively mild fire. Sodium plasma ("vapor") lamps are often used for street lighting in cities, shedding light that ranges from yellow-orange to peach as the pressure increases. 'Crazy train': GOP lawmaker rips Trump's fraud claims, Denzel Washington 'safe' after smoke call at home, Yang dismayed by Asian American reaction to Trump, Senator's 'tone deaf' tweet on Lakers, Dodgers slammed, COVID-19 vaccine may have unpleasant side effects, CDC outlines which masks are most effective, Disney CEO 'extremely disappointed' in Calif. leaders, 'Math doesn't care about' Trump fraud claims: Official, Jack Nicklaus won't talk Trump at Augusta National, A close look at Trump campaign election lawsuits, Nancy Pelosi calls on Republicans to 'stop the circus'. Do radioactive elements cause water to heat up? 5 0. Answer Save. Compare it with the density of sodium in its crystalline phase : 970 kg m^3 . This is simply Avogadro's number × volume of atom . Alfred Klemm, Gabriele Hartmann, Ludwig Lange, "Sodium and Sodium Alloys" in Ullmann's Encyclopedia of Industrial Chemistry 2005, Wiley-VCH, Weinheim. When the concentration of sodium increases, the production of renin decreases, and the sodium concentration returns to normal. [94] In response, some plants have developed mechanisms to limit sodium uptake in the roots, to store it in cell vacuoles, and restrict salt transport from roots to leaves;[95] excess sodium may also be stored in old plant tissue, limiting the damage to new growth. [41] Sodium's estimated oceanic abundance is 1.08×104 milligrams per liter. Earn Transferable Credit & Get your Degree, Get access to this video and our entire Q&A library. [54][55] This is done in a Downs cell in which the NaCl is mixed with calcium chloride to lower the melting point below 700 °C.