What is the diameter of zinc atom

What is the diameter of zinc atom

http://www.chacha.com/question/what-is-the-diameter-of-zinc-atom

It is estimated that the diameter of a zinc atom is 2.48 x 10-10 meters. (That, by the way, is less that one nanometer).

Related Questions Answered on Y!Answers

Can someone explain how to do these Chemistry problems for a test?

Q: These are the types of things I need to know for my test. If you could explain the methods of a few of them I would appreciate it.Thanks.1. If there are 120 grams of Zinc, how many atoms are there?2. What is the molar mass of C2H3O2?3. If there are 13.7 liters of carbon dioxide and 1 atmospheric pressure, how many atoms are there? What is its mass?4. How many grams does Barium Chloride weigh when it is 2.7X10^21 representative particles(atoms)?5. If there are 2050 liters of Carbon Dioxide, how many representative particles does this contain?6. If there are 25 moles of Carbon Dioxide, how many grams are there?7. How many liters does 48 grams of Sulfur Hexafloride contain of STP?8. If there is a 5 gram Sapphire, how many atoms of Sapphire Aluminum Oxide are there?9. How many grams are in 13.7 liter of Carbon Dioxide? How many grams of Carbon?10. How many representative particle of Chromium(III) Sulfite are in 5.07 grams of Chromate? How many grams?11. The percent composition of lactic acid is 40.0% C, 6.67% H, and 53.3% O. What is the molecular formula of lactic acid if its molar mass is 90.0 grams/moles?12. The density of a nickel is 8.91 grams/cm^3. How large a cube, in cm^3, would contain 2.00X10^24atoms of nickel?13. A typical virus is 5X10^ -6cm in diameter. If Avogadro’s number of these virus particles were laid in a row, how many kilometers long would the line be?14. How many water molecules are in a 1.00L. bottle of water? The density of water is 1.00 grams/mL.15. The molecular formula of the antibacterial drug Cipro is C17H18FN3O3. How many fluorine atoms are in a 150mg tablet of Cipro?16. A cubic meter of seawater contains 6X10^ -6 grams gold. If the total mass of the water in Earth’s oceans is 4X10^20 kg, how many kilograms of gold are distributed throughout the ocean?(assume the density is 1 gram/cm^3) How many liters of seawater would have to be processed to recover 1 kg of gold(which has the value of $12,500 at 2003 prices)? Do you think this recovery operation is feasible?17. Avagadro’s number has been determined by about 20 different methods. In one approach, the spacing between ions in an ionic substance is determined by using a technique called x-ray diffraction. x-ray diffraction studies of sodium chloride have shown that the distance between adjacent Na+ and Cl- ions is 2.819X10^ -8cm. The density of solid NaCl is 2.165 grams/cm^3. By calculating the molar mass to four significant figures, you can determine Avogadro’s number/ What value do you obtain?

A: 1) 120 g of Zinc. 1 atom of zinc = 65.39 g. You get this from the periodic table of elements. Divide 120 and 65.392) Find the mass of 2 carbon, 3 hydrogen, and 2 oxygen. Add them together.3) IDK. Didn’t learn this yet, sorry.4) Avogadro’s number is 6.02 * 10^23. You divide Avogadro’s number by the number of representative particles given to you.5) IDK how to do liter problems yet.6) Carbon dioxide is CO2. Find the molar mass (steps shown in #2) for CO2. Multiply it by 25.7) IDK.8) Find the formula for Sapphire Aluminum Oxide. Find the molar mass. Divide the molar mass by 5.9) Liters, idk.I hope you understand some of the concepts now. 🙂 I’ll come back to answering this.

Chemistry questions:Please help study for test!?

Q: These are the types of things I need to know for my test. If you could explain the methods of a few of them I would appreciate it.Thanks.1. If there are 120 grams of Zinc, how many atoms are there?2. What is the molar mass of C2H3O2?3. If there are 13.7 liters of carbon dioxide and 1 atmospheric pressure, how many atoms are there? What is its mass?4. How many grams does Barium Chloride weigh when it is 2.7X10^21 representative particles(atoms)?5. If there are 2050 liters of Carbon Dioxide, how many representative particles does this contain?6. If there are 25 moles of Carbon Dioxide, how many grams are there?7. How many liters does 48 grams of Sulfur Hexafloride contain of STP?8. If there is a 5 gram Sapphire, how many atoms of Sapphire Aluminum Oxide are there?9. How many grams are in 13.7 liter of Carbon Dioxide? How many grams of Carbon?10. How many representative particle of Chromium(III) Sulfite are in 5.07 grams of Chromate? How many grams?11. The percent composition of lactic acid is 40.0% C, 6.67% H, and 53.3% O. What is the molecular formula of lactic acid if its molar mass is 90.0 grams/moles?12. The density of a nickel is 8.91 grams/cm^3. How large a cube, in cm^3, would contain 2.00X10^24atoms of nickel?13. A typical virus is 5X10^ -6cm in diameter. If Avogadro’s number of these virus particles were laid in a row, how many kilometers long would the line be?14. How many water molecules are in a 1.00L. bottle of water? The density of water is 1.00 grams/mL.15. The molecular formula of the antibacterial drug Cipro is C17H18FN3O3. How many fluorine atoms are in a 150mg tablet of Cipro?16. A cubic meter of seawater contains 6X10^ -6 grams gold. If the total mass of the water in Earth’s oceans is 4X10^20 kg, how many kilograms of gold are distributed throughout the ocean?(assume the density is 1 gram/cm^3) How many liters of seawater would have to be processed to recover 1 kg of gold(which has the value of $12,500 at 2003 prices)? Do you think this recovery operation is feasible?17. Avagadro’s number has been determined by about 20 different methods. In one approach, the spacing between ions in an ionic substance is determined by using a technique called x-ray diffraction. x-ray diffraction studies of sodium chloride have shown that the distance between adjacent Na+ and Cl- ions is 2.819X10^ -8cm. The density of solid NaCl is 2.165 grams/cm^3. By calculating the molar mass to four significant figures, you can determine Avogadro’s number/ What value do you obtain?

A: 1) you convert the grams of Zn into moles by dividing 120g with the molar mass of Zn. Then you find the number of atoms by multiplying the avagadro’s number (6.022 * 10^23 atoms/moles) and you have the atoms of Zn in 120g2) (molar mass of C*2)+(molar mass of H*3)+(molar mass of O*2)3) do they mention the temperature? If they do, you can use PV=nRT to calculate n=number of moles and multiply with avagadro’s #.4) BaCl2 has 3 atoms, so you divide the number of atoms with 3 and you get the number of molecules. Then divide the number of molecules with the avagadro’s # and you get the moles. Multiply the moles with the molar mass of BaCl2 and you get the mass.6) 25 moles * molar mass of CO2 (44g/mol)7) at STP, T=273K and P=1atm, so for PV=nRTP=1atm V=? n= 48g/molar mass of SF6 R=0.0821 L.atm/mol.K T=273KPlug in and solve for V8) 5g/ molar mass of Al2O3. Multiply the moles with avagadro’s #9) Density of CO2=1.98g/L. Density * the given volume will give you the mass. 11) C mols=40g/12.0g/mol, H mols=6.67g/1.01g/mol, Omols= 53.3g/16.0g/mol. Divide the smallest # of mols with the mols of C,H and O. Round your answer to whole numbers. Your empirical formula should be CH2O. Now calculate the molar mass (empirical formula weight) of CH2O. Divide 90.0mols/g by the # you got before and round to a who #. multiple CH2O by that # and you have the molecular formula (C3H6O3).

Need help writing a conclusion to my oral report (for chem). Would appreciate help or even a proofread?

Q: This is my oral report on nanotechnology (specifically, the nanoparticles in sunscreen). I’ve put astericks around the section I’m not happy with. I don’t like that part, because it’s too vague and I took too much from my book, but molecular manufacturing is incredibly hard to define. Maybe someone here could help with that?Otherwise, I’d really appreciate proofreading (British English) or help with writing a conclusion.Thank you so much.———————-Nanotechnology is a branch of engineering concerned with the development of technology at the atomic, molecular and macromolecular range – that is, 1 to 100 nanometers.
Though you may not have heard of it before, a nanometer is simply a form of measurement. It is precisely 1 billionth of a metre, and we use it to measure very small things. An atom is about 0.1 nanometers in diameter, and molecules range from about 0.15 nanometers in diameter to visible, so-called, macromolecules. Bacteria is substantially larger in size, at about 500 to 5000 nanometers, and viruses, the smallest “living” things, range only 10 to 50 nanometers.To help you understand this concept better, let me introduce the Buckminsterfullerene or C-60 “buckyball” molecule. The buckyball is a spherical-shape molecule which, in this case, contains 60 carbon atoms. The carbon atoms are bonded to form stable hexagonal and pentagonal rings, linked together in a pattern identical to a football’s patches. A buckyball is 0.7 nanometers in diameter.Now visualise an actual football, which is roughly 22 cm in diameter. The Earth is 100 million times larger than that figurative football which, in turn, is 100 million times larger than a C-60 buckyball. So, you get the idea.To summarise, nanotechnology is the study and utilisation of very small things.But why is it important?The answer is “molecular manufacturing”.As we know, manufactured products are made from atoms and the properties of these products depend on how their atoms are arranged. But today’s manufacturing techniques are very crude at the molecular level.
It’s like trying to build LEGO with boxing gloves on – you can’t really piece the blocks together. At best, you can pile them up and make something resembling a cubist anthill. And this is where nanotechnology comes in:***Molecular manufacturing is the engineering of tiny machines, designed to construct objects by manipulating atoms or molecules to make “complete and highly advanced products”.***It’s not LEGO but, through molecular manufacturing, we could be able to piece together atoms – the fundamental building blocks of life.The applications of nanotechnology are endless. It has the potential to build cleaner, safer and longer-lasting products, for communication, medicine, transportation, industry, agriculture and home.And that’s what I’ll be talking about today – a way in which nanotechnology has already entered our day-to-day lives.Sunscreen.I’m sure you all know how to slip-slop-slap, but what about the science behind sun protection?Zinc oxide and titanium dioxide are the main components of sunscreen. They are used, because they effectively absorb UVA – which is 98.7% of the Sun’s ultraviolet radiation to reach the Earth’s surface, and particularly harmful to skin.The problem, however, is that these compounds also reflect UV light, which causes the sunscreen to appear white. This is because the zinc oxide and titanium dioxide particles in regular sunscreen are larger than the wavelength of visible light.When zinc oxide and titanium dioxide are made smaller than the wavelength of visible light, they no longer reflect it, because the visible light is able to pass between the particles.Thus, sunscreen containing zinc oxide and titanium dioxide is transparent.

A: The goal of nanotechnology is to be able to manipulate materials at the atomic level to build the smallest possible electromechanical devices, given the physical limitations of matter.