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April 20, 2014

Search: How many atoms of hydrogen are in.....

Number of results: 7,878

science
What's to understand. If brackets (you used parentheses which is the usual way to do it) or parentheses, it means to multiply everything inside the parenthese by the number in the subscript. So. Mg(OH)2 has 1 Mg atom, 2 O atoms and 2 H atoms. MgO has 1 Mg atom and 1 O atom. Al...
Friday, November 2, 2007 at 9:29pm by DrBob222

gen.science
Since this is not my area of expertise, I searched Google under the key words "8 hydrogen 3 carbon atoms" to get this: http://www.google.com/search?client=safari&rls=en&q=8+hydrogen+3+carbon+atoms&ie=UTF-8&oe=UTF-8 In the future, you can find the information you desire more ...
Monday, June 21, 2010 at 8:57am by PsyDAG

Science
By counting the number of H atoms and oxygen atoms in the sucrose. what is the ratio of hydrogen to oxygen? What process would this be called if you had a starch like above and added water to it so it broke down into the simple sugars the starch is made of?
Monday, October 7, 2013 at 7:43pm by Kaylyn

science-plz help!
Because water molecules contain twice as many H atoms as O atoms. Both hydrogem and oxygen atoms form molecules in pairs, so you also have twice as many H2 molecules as O2 molecules. The volume of a gas is proportional to the number of molecules in it, and does not depend upon...
Thursday, October 25, 2007 at 10:23pm by drwls

Chem
How many moles of hydrogen and oxygen are in 2 moles of water? water: h2o # of molecules = (6.022 x 10^23)(2)= 1.2044 x 10^23 # of hydrogen atoms = (1.2044 x 10^23)(2)= 2.4088 x 10^24 # of oxygen atoms = 1.2044 x 10^24 Did I do this correctly? What do I do about significant ...
Monday, July 6, 2009 at 4:22pm by Lena

chemistry
a. How many atoms of hydrogen are in 25.0 g of ammonia (NH3)? Use the format 6.02E+23 for 6.02 x 1023 b. How many atoms of nitrogen are in the same amount of ammonia? Use the molar mass to two decimal places found on the periodic table in the front of your text.
Friday, October 18, 2013 at 9:07pm by Kristin

A&P
Compare ionic, covalent, and hydrogen bonding, and fully describe an example of each. Is this right and I need help with an example of a covalent bond. Ionic bond is formed from one metal and one non metal. It is a solid at room temperate. In an ionic bond and electron is ...
Sunday, November 14, 2010 at 10:29pm by Danielle

science
Chemical formula : C12,H22,O11 How many carbon atoms are in 1 molecule of sugar? How many hydrogen atoms are in 1 molecule of sugar? How many oxygen molecules are in 1 molecule of sugar?
Monday, October 31, 2011 at 8:48pm by Ashlie

Chemistry
I would argue that this is a poor question because of the typo and poor wording. First, glucose is C6H12O6 so the molar mass is 180 and not 174. So the 3.5 moles glucose will provide 3.5 x 6 = 21 moles of H ATOMS. But due to poor wording in the problem, when I'm asked for ...
Saturday, November 5, 2011 at 9:11am by DrBob222

chemistry
excatly, im just as confused. I tried to email him, no reply. The problem says what is the ratio of energy yield on combustion of hydrogen atoms to steam to the yield on combustion of an equal mass of hydrogen molecules to steam given. what am i missing
Sunday, March 4, 2012 at 9:23pm by Court

Chemistry
Describe the formation of hydrogen bonds in a hydrogen peroxide, H2O2. Represent possible hydrogen bonding structures in hydrogen peroxide by using structural formulas and the conventional notation for a hydrogen bond.
Sunday, February 3, 2008 at 6:05pm by Lauren

Chemistry (Check)
Completion is these correct. I can't figure out 5,7,8,9.. 1)equally 2)Non-polar 3)un equally 4)polar bond 5) 6)clipore interactions 7) 8) 9) When atoms are joined by a covalent bond, the bonding electrons are shared ___1____, and the bond is ___2___. When the atoms in a bond ...
Wednesday, January 3, 2007 at 3:51pm by Bryan

Anatomy and Physiology
This is the definition from "Biology Online:" organic molecule noun 1. a molecule that is normally found in living systems 2. a molecule that typically consists of carbon atoms in rings or long chains, where other atoms (e.g. hydrogen, oxygen, and nitrogen) are attached So, is...
Friday, March 21, 2008 at 3:01pm by SraJMcGin

Chemistry
Boron Phosphide, BP, is a semiconductor, and a hard, abrasion resistant material. It is made by reacting Boron tribromide and phosphorus tribromide in a hydrogen atmosphere at high temperature (>750 degrees C) (a) Write a Balanced chemical equation for the synthesis of BP (...
Sunday, March 11, 2012 at 4:11am by Laffy Taffy

Math
A molecule of water is made up of 2 atoms of hydrogen and 1 atom of oxygen. What percent of the atoms of a water molecule is oxygen?
Monday, March 14, 2011 at 5:04pm by Sammy

Chemistry
#1. When the paper talks about sodium borohydride as a source for hydrogen, it states something like "so sodium borohydride or boron/hydrogen derivatives" which means that some other hydrogen compound beside a borohydride OR some other boron compound besides boron could be ...
Sunday, May 10, 2009 at 9:09pm by DrBob222

Chemistry
A compound containg 3 atoms of carbon and 8 atoms of hydrogen is combined in a reaction with oxygen molecules. The two end products of this equation are carbon dioxide (CO2) and water. What element should you look at first in balancing this equation? Is the answer a.b.c or d? ...
Friday, July 4, 2008 at 10:08pm by Mickey

Chemistry
A compound containg 3 atoms of carbon and 8 atoms of hydrogen is combined in a reaction with oxygen molecules. The two end products of this equation are carbon dioxide (CO2) and water. What element should you look at first in balancing this equation? Is the answer a.b.c or d? ...
Friday, July 4, 2008 at 12:54pm by MV

Chemistry
One (1) molecule of C3H8O contains 3 atoms of C, 8 atoms of H and 1 atom of O for a total of 12 atoms. So 200 molecules would contain xxx atoms.
Sunday, November 1, 2009 at 7:30pm by DrBob222

Chemistry
Electron exhibiting a particle wavelength of 5.2 x 10-9 are emitted from hydrogen atoms after interaction with high energy photons. Assuming that the electrons in the hydrogen atom were in their ground state prior to interaction, determine the wavelength of the photon which ...
Sunday, October 13, 2013 at 4:44am by Chemistry

chem
can anyone help me with this question what is the advantages and disadvantages of hydrogen power as opposed to hydrogen fuel, also what is the equation for hydrogen feul? I do not understand your first question. Hydrogen power REQUIRES hydrogen fuel. Hydrogen fuel is H2; ...
Saturday, March 3, 2007 at 12:41pm by ana

Chemistry
Electron exhibiting a particle wavelength of 4.02 x 10-9 are emitted from hydrogen atoms after interaction with high energy photons. Assuming that the electrons in the hydrogen atom were in their ground state prior to interaction, determine the wavelength of the photon which ...
Sunday, October 13, 2013 at 2:25am by ss01

chemistry
Electron exhibiting a particle wavelength of 6.81 x 10-9 are emitted from hydrogen atoms after interaction with high energy photons. Assuming that the electrons in the hydrogen atom were in their ground state prior to interaction, determine the wavelength of the photon which ...
Sunday, October 13, 2013 at 6:43pm by sigma_pi

Chemistry
Electron exhibiting a particle wavelength of 7.18 x 10-9 are emitted from hydrogen atoms after interaction with high energy photons. Assuming that the electrons in the hydrogen atom were in their ground state prior to interaction, determine the wavelength of the photon which ...
Saturday, October 12, 2013 at 9:28pm by h

Chemistry
Do you mean like this? Hydorgenation is when atoms of hydrogen H2 are added to the carbons in a double or triple bond of alkenes or alkynes to form what we call alkanes. More or less attaches to one of the carbon atoms in a double and OH-attaches to the other carbon atom of ...
Sunday, February 10, 2008 at 4:32pm by Bethany

chemistry
The sodium and hydroxide atoms separate into ions and the positive sodium ions are attracted to the oxygen atoms and the hydroxides are attracted to positive charged part of water, the hydrogen making another molecule.
Sunday, May 1, 2011 at 4:01pm by johnny

chemistry
I didn't check the math but #2 is worked correctly. #1 is not correct. The question asks for the number of atoms and there are three atoms per molecule of NO2; i.e., 1 N atom and 2 O atoms = 3 atoms total.
Sunday, December 14, 2008 at 11:08pm by DrBob222

Chemistry..
London dispersion force is a weak intermolecular force between two atoms or molecules in close proximity of each other. The force is a quantum force generated by electron repulsion between the electron clouds of two atoms or molecules as they approach each other. The London ...
Wednesday, December 12, 2012 at 12:09am by Jennifer

BIOLOGY
How many hydrogen atoms will bond with each nitrogen atom?
Monday, June 20, 2011 at 9:58pm by Sherri

chemistry
The water molecules are dipoles. The oxygen end is negative and the hydrogen end is positive. Therefore, around the oxygen atom of one molecule will be one or more hydrogen atoms from nother molecule(s).
Thursday, February 7, 2008 at 2:40pm by drbob222

physics
In the Sun, an ionized helium atom makes a transition from n =6 state to the n = 2 state, emitting a photon. Can that photon be absorbed by hydrogen atoms present in the Sun? If so between what energy states will the hydrogen atom jump?
Tuesday, April 19, 2011 at 7:36am by qwer

chemistry
How many atoms of H are in 6.0 moles of H2O? A. 7.22 x 1024 atoms B. 7.12 x 1027 atoms C. 7.32 x 1024 atoms D. 7.72 x 1024 atoms A
Saturday, November 10, 2012 at 10:16pm by Marian

solid chemestry
A membrane is to be manufactured to the following specifications. The leak rate of hydrogen is not to exceed 10-3 mol-cm-2h-1 at 700 C when the concentration of hydrogen is maintained at 1.5 x 1019 atoms/cm3 on one side of the membrane and effectively zero on the other side. ...
Friday, November 15, 2013 at 11:40am by Anonymous

solid chemestry
A membrane is to be manufactured to the following specifications. The leak rate of hydrogen is not to exceed 10-3 mol-cm-2h-1 at 700 C when the concentration of hydrogen is maintained at 1.5 x 1019 atoms/cm3 on one side of the membrane and effectively zero on the other side. ...
Friday, November 15, 2013 at 2:51pm by Anonymous

chemistry
H atoms in water = 2.70E25 x (2 atoms H/1 molecule H2O)? H atoms in NH3 = 7.60E24 x (3 atoms H/1 molecule NH3) = ? The sum will give you the total numbr of H atoms.
Sunday, October 9, 2011 at 5:18pm by DrBob222

chemistry
Calculate the number of hydrogen atoms in 20.0 g of CH3OH
Tuesday, September 18, 2007 at 10:50pm by sarah

chemistry
how many hydrogen atoms are present in 2.84 moles of water
Wednesday, September 30, 2009 at 6:43am by Anonymous

chemistry
what is the mass in grams of 0.0850 mol of hydrogen atoms?
Tuesday, February 7, 2012 at 7:26pm by Amanda

bilogy
methane which is composed of carbon and hydrogen, lacks fuctional groups and is a gas at room temperature.upon replacing one of the hydrogen atoms with a hydroxyl group, methane is converted to a liquid called methanol at room temperature. please explain to me the reason ...
Tuesday, December 14, 2010 at 9:05pm by erika

science
1. Which statement is true about the following molecule? (1point)The molecule is composed of four atoms.The molecule contains oxygen atoms.The molecule is water.The molecule represents an element. 2. A(n) _____________ is made up of two or more different atoms that are ...
Thursday, February 27, 2014 at 10:29am by cIATA

ap chem
The allene molecule has the following Lewis structure: H2C=C=CH2. Are all four hydrogen atoms in the same plane? The allene molecule has the following Lewis structure: H2C=C=CH2. Are all four hydrogen atoms in the same plane? If not, what is the spatial relationship? Explain. ...
Friday, December 28, 2012 at 3:15pm by mary

chemistry
How many atoms are in 3.14 mol of methane (CH4)? A. 7.56 x 1023 atoms B. 7.56 x 102 atoms C. 7.56 x 104 atoms D. 7.56 x 1024 atoms D
Saturday, November 10, 2012 at 10:28pm by Drew

biology
Allegra is a blockbuster allergy medication that generated over $1.8 billion in global sales in 2004. Allegra, or Fexofenadine, decreases allergy symptoms by inhibiting the action of histamines. Histamines are naturally occurring molecules that are released from some cells ...
Tuesday, March 12, 2013 at 3:15pm by selly

Chemistry
2400 atoms O-200 atoms C-600 atoms H-1600 atoms
Sunday, November 1, 2009 at 7:30pm by Ashley

definition- please revise
How many atoms of hydrogen are there for each atom of oxygen in seawater?
Thursday, June 12, 2008 at 10:57pm by Anonymous

Science
How many hydrogen atoms are in a molecule of C8H10N4O2? wouldnt it just be 10?
Friday, September 30, 2011 at 6:26pm by Jake

science
How many hydrogen atoms are in a molecule of C8H10N4O2? wouldnt it just be 10?
Friday, September 30, 2011 at 11:36pm by Jake

Chemistry
What is the frequency of the photons emitted by hydrogen atoms when they undergo transition from n=5 to n=3?
Monday, April 2, 2012 at 10:10pm by Tiffany

college
The average speed of the hydrogen molecules is the same as that of the helium atoms.
Friday, October 25, 2013 at 3:50pm by Mack Smith

Physics
I just wanted to clarify anwsers. Question 23. Nucleotides contain phosphate groups bonded to the.. A) C3' or c5' atoms B). C3 or C3' atoms C). N1 or N9 Atoms D). C3 or N9 atoms E). C3 or C5 atoms The anwser that I chosen in A. QUESTION 19. When the hydrogen ion concentration ...
Thursday, October 1, 2009 at 12:30pm by james

biochemistry
I just wanted to clarify anwsers. Question 23. Nucleotides contain phosphate groups bonded to the.. A) C3' or c5' atoms B). C3 or C3' atoms C). N1 or N9 Atoms D). C3 or N9 atoms E). C3 or C5 atoms The anwser that I chosen in A. QUESTION 19. When the hydrogen ion concentration ...
Friday, October 2, 2009 at 5:42pm by james

Chemistry
How many mols SO3 do you have? mols SO3 = grams/molar mass O atoms in SO3 = 3 O atoms/1 molecule; therefore, 3x that value = mols O atoms. Then there are 6.02E23 O atoms in 1 mol O atoms; therefore, there are ..... O atoms.
Tuesday, November 6, 2012 at 2:03pm by DrBob222

Chem
4.70E-22g/atom x # atoms = ? How do you find # atoms? You know you have mol U = 0.164g/atomic mass = ? Then you know there are 6.02E23 atoms in 1 mol. So # mols x 6.02E23 atoms/mol = # atoms.
Saturday, March 16, 2013 at 11:13pm by DrBob222

Ap Chemistry
HOw much energy is required to ionize a mole of Hydrogen atoms?
Thursday, September 8, 2011 at 10:06pm by Ivy

Chem
How many moles of hydrogen atoms are present in 2.41x10^24 molecules of CH4?
Monday, July 16, 2012 at 10:19pm by Kristine

Chem
How many moles of hydrogen atoms are present in 2.31x10^24 molecules of CH4?
Tuesday, July 17, 2012 at 12:00am by Kristine

science
decomposing 0.00153 moles cholesterol will release what volume of hydrogen atoms?
Friday, October 12, 2012 at 2:21pm by cris

science
the differences between amino acids are in the? A: side groups B: hydrogen atoms
Tuesday, October 22, 2013 at 7:29pm by Taylor

science
the differences between amino acids are in the? A: side groups B: hydrogen atoms
Tuesday, October 22, 2013 at 7:33pm by Taylor

science
the differences between amino acids are in the? A: side groups B: hydrogen atoms
Tuesday, October 22, 2013 at 7:41pm by Taylor

Calculate the oscillation frequency f of the H2 mo
When displaced from equilibrium by a small amount, the two hydrogen atoms in an \rm H_{2} molecule are acted on by a restoring force F_{x}=-k_1 x with k_1 = 510 N/m. Calculate the oscillation frequency f of the H2 molecule. Use m_eff = m/2 as the "effective mass" of the system...
Thursday, April 15, 2010 at 3:15pm by Tyler

Chemistry
How would you approach a question like There are 6.02x 10 to the power of 23 atoms in one mol of atoms, how many atoms are there in 5.5 mol of atoms?
Tuesday, February 5, 2008 at 9:24pm by Katrina

chemistry
I want to make sure I am correct in classifying whether the following properties of hydrogen are chemical or physical. thanks 1. hydrogen will burN in in oxygen to form water. CHEMICAL 2. hydrogen does not support combustion. CHEMICAL 3.hydrogen is usually found combined with ...
Tuesday, April 8, 2014 at 8:45pm by david

Chemistry 101
The structure of oxalic acid is shown at: (Broken Link Removed) Each carbon atom is connected to 3 other atoms (1 double and 2 single bonds). That is sp^2 hybridization. The two double bonded oxygen atoms are also sp^2 hybridized (1 double bond and 2 nonbonding electron pairs ...
Wednesday, June 10, 2009 at 1:43pm by GK

chemistry
a sample of glucose, c6h12o6 contains 2.03*10^21 atoms of carbon. (a)how many atoms of hydrogen does it contain? (b)how many molecules of glucose does it contain? (c)how many moles of glucose does it contain? (d)what is the mass of this sample in grams? its kinda long, but i ...
Friday, February 22, 2013 at 1:18pm by rose

chemistry
Calculate the mass, in kg, of each sample.9.621026 cadmium atoms. -5.721027 nickel atoms. -9.141027 manganese atoms. -9.021029 lithium atoms.
Monday, September 20, 2010 at 9:49pm by isoka

chemistry
a. How many atoms of hydrogen are in 25.0 g of ammonia (NH3)? Use the format 6.02E+23 for 6.02 x 10^23 b. How many atoms of nitrogen are in the same amount of ammonia I know to find the number of atoms in a gram of a sample you must multiply by 6.02*10^23. So i multiplied 25*6...
Monday, September 20, 2010 at 10:38am by kellie

9th grade biology
a fatty acid with the maxium number of hydrogen atoms possible is
Wednesday, August 26, 2009 at 8:30pm by miraj

chemistry
What will be the mass in grams of hydrogen atoms (only) that will be present in 22.2 g of compound A (XH3)?
Monday, February 1, 2010 at 12:21am by richard

chemistry
How many atoms of hydrogen are found in 2.48 mol of propane, C3H8? Someone can explain to me. Thanks
Saturday, April 3, 2010 at 7:10am by sam

CHM
In the chemical formula of ammonium sulfate, (NH4)2SO4, how many hydrogen atoms are present? 4
Sunday, January 27, 2013 at 11:46pm by jakey

Chemistry- moles
How do I determine the number of hydrogen atoms in .0885 mol Tetracarbon decahydrogen?
Tuesday, October 1, 2013 at 5:57pm by Lisa

HELP please somebody
the differences between amino acids are in the? A: side groups B: hydrogen atoms
Tuesday, October 22, 2013 at 7:47pm by Taylor

Science
Can an element be separated from a compound? Can an element form a compound? The reaction of zinc metal and hydrochloric acid creates hydrogen gas, an element. if we create this element in a tube what property of this element requires us to keep the tube upside down? Water has...
Sunday, February 16, 2014 at 7:19pm by Roma

9th chemistry
There is one sodium phosphate, Na3PO4, and 2 sodium hydrogen phosphates (one is sodium dihydrogen phosphate [NaH2PO4] which is also called monosodium dihydrogen phosphate and one is disodium hydrogen phosphate [Na2HPO4] which may also be called disodium monohydrogen phosphate...
Friday, January 2, 2009 at 9:35pm by DrBob222

Chemistry
Hydrogenation is when atoms of hydrogen H2 are added to the carbons in a double or triple bond of alkenes or alkynes to form what we call alkanes.When adding water to an alkene, the hydrogen adds to one carbon of the double bond while OH adds to the other carbon of the double ...
Sunday, February 10, 2008 at 4:32pm by Anonymous

science, biology
There is an exchange of atoms among the reactants. Oxygen from the oxidizer compound usully combines with hydrogen or carbon atoms in the reducing compound. In a decmposition reaction, a large molecule breaks up into smaller ones. In a synthesis reaction, smaller molecules ...
Sunday, March 1, 2009 at 11:50am by drwls

chemistry
How many atoms are in 1.14 mol of propane (C3H8)? A. 7.55 x 1023 atoms B. 7.77 x 1024 atoms C. 7.55 x 1024 atoms D. 7.55 x 1030 atoms C
Saturday, November 10, 2012 at 9:26pm by Drew

MATH PLEASE HELP
So if oxygen is x, then hydrogen is 2x, and would be 2x+1. x+2x+2x+1 = 31 5x+1=31 5x=30 x=6 Therefore there are 6 oxygen, 12 hydrogen, and 13 carbon atoms.
Tuesday, October 19, 2010 at 7:00pm by MathMate

Easy Chemistry
Therre are 6.023 x 10^23 atoms in 1 mol of Fe atoms and 1 mol of Fe atoms has a mass of 55.85 grams. Convert 1.0 g Fe atoms to mols and convert that to number of atoms. Post your work if you get stuck.
Wednesday, July 2, 2008 at 1:05pm by DrBob222

Chemistry/Math
1 is ok. Your answer for 2 defines 1 mol as 6.022 x 10^23 molecules which we already know; in act, I wrote that in mu response. You want 1000 g converted to moles. 1000 g x (1 mol H2O/18.015 g H2O) = ?? moles. Then ?? moles H2O x (6.022 x10^23 molecules/1 mole H2O) = xx ...
Saturday, August 21, 2010 at 1:01pm by DrBob222

Treacher girls scholl
Since it is a hydrocarbon that burns and combines with oxygen in the air, so all the carbon in carbon dioxide derives from the hydrocarbon, and similarly for hydrogen in water. Now for CO2, proportion of carbon/CO2 =12/(12+2*16) =12/44 =3/11 Mass of carbon in hydrocarbon =mass...
Monday, March 28, 2011 at 12:52am by MathMate

Chemistry
For each definition, find a corresponding term from the following list: alkane,alkene, alkyne, alcohol, ether, aldehyde, ketone, carboxylic acid, ester, amine, fuctional group, isomers. a. Organic compounds with identical molecular formulas that differ in the order the atoms ...
Tuesday, July 20, 2010 at 2:43pm by Elisabeth

Chemistry
For each definition, find a corresponding term from the following list: alkane,alkene, alkyne, alcohol, ether, aldehyde, ketone, carboxylic acid, ester, amine, fuctional group, isomers. a. Organic compounds with identical molecular formulas that differ in the order the atoms ...
Tuesday, July 20, 2010 at 2:43pm by Elisabeth

chemistry
What is the change in energy, Delta E, in kilojoules per mole of hydrogen atoms for an electron transition from n=5 to n=2?
Tuesday, April 20, 2010 at 10:37pm by Anonymous

chemisrty
What is the ratio of the average velocity of hydrogen molecules to that of neon atoms at the same temperature and pressure?
Thursday, May 13, 2010 at 6:38pm by someone

chemistry
How many photons of light are emitted when the electrons in 10 hydrogen atoms drop from energy level 5 to 3?
Saturday, February 5, 2011 at 12:57pm by Emily

Chemistry
How many atoms of hydrogen are in a mixture of 3.49x10^23 molecules of H2O and 78.1g of CH3OH?
Sunday, September 29, 2013 at 11:10am by Madison

Please help mrs Sue
the differences between amino acids are in the? A: side groups B: hydrogen atoms
Tuesday, October 22, 2013 at 7:47pm by Taylor

chem!!!!!!
You need to know the following rules. 1. Subscripts (the 3 in NO3 in f) multiply the preceding atom while the 2 in (NO3)2 multiply everything inside the parentheses. So you have 2 N atoms and 6 O atoms in f (so far--since this doesn't count the 5 coefficient). 2. Coefficients ...
Monday, July 29, 2013 at 12:17pm by DrBob222

Chemistry
Normality is Molar concentration divided by an equivalence factor. (n = c/f) The hydrogen equivalence factor of an acid is the number of moles of acid that contains 1 mole of acidic hydrogen atoms. The hydrogen equivalence factor of a triprotic acid is 1/3, so the normality of...
Saturday, September 7, 2013 at 12:38am by Graham

Biology
What's high specific heat is mainly a consequence of the: A) high specific heat of oxygen and hydrogen atoms B) inability of water to dissipate heat into dry air D) absorption and release of heat when hydrogen bonds break and form E) fact that water is a poor heat conductor I ...
Thursday, October 18, 2007 at 9:26pm by J

Biology
4. The difference between an atom and and element is a. an element is made of atoms b. atoms are made of elements c. atoms are held together by covalent bonds d. none of the above C? 6. Which of the following is NOT an organic compound? a. ATP molecule b. saturated fatty acid ...
Wednesday, January 20, 2010 at 4:27pm by mysterychicken

Biology
4. The difference between an atom and and element is a. an element is made of atoms b. atoms are made of elements c. atoms are held together by covalent bonds d. none of the above C? 6. Which of the following is NOT an organic compound? a. ATP molecule b. saturated fatty acid ...
Thursday, January 21, 2010 at 1:51pm by mysterychicken

Chemistry
Hey guys! are you from 3.091x ? I wasn't aware that there was a exam, and now it is due in few hours. Can you help me out? Much appreciated. 1)Determine the minimum potential that must be applied to a proton so that, on interaction with a hydrogen atom, it can excite the ...
Saturday, October 12, 2013 at 9:28pm by student

science
why are the hydrogen atoms in a water molecule are attracted to Cl− ions in sodium chloride (NaCl)?
Thursday, April 1, 2010 at 9:53am by libby

chemistry
Write a paragraph explaining how to determine how many hydrogen atoms are in 6.5g of water. No equations are permitted in this answer.
Thursday, April 7, 2011 at 9:11am by alana

Chemistry
How many atoms are present in 1.25g of molecular hydrogen? I know the way to do it..but for molar mass, would it be 2.02g or 1.00g?
Wednesday, October 3, 2012 at 7:18am by Mae

biochem
N, O, and F are the negative ions that make hydrogen bonds. Other atoms are not electronegative enough to do that. Which pair does NOT have N, O, F?
Sunday, January 27, 2013 at 12:36pm by DrBob222

physical science
calculate the molar mass ofthe substance. divide it by Avogadros number (6.02x10 to 23 power) .)Hydrogen2 2/(6.02 x 10^23) = ?? hun i don't get it the teacher said first H2x1.00 and then (6.02xio^23) but i still dont get it can you help? I assume you don't understand where the...
Friday, October 20, 2006 at 3:08pm by Jasmine

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