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December 22, 2014

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

Number of results: 5,475

organic
2000gram ya 2kg caco3 me mole se atoms se molecuies atoms se proton atoms se neutron atoms se eiectron
July 16, 2012 by rishi

Chemistry of Life
Which statement is true about water molecules? The oxygen atom has a negative charge. The hydrogen atoms do not share electrons. Water molecules move randomly around each other. Water molecules cannot dissolve many substances. Question 2. How does water relate to the ability ...
September 26, 2014 by Sara

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...
October 20, 2006 by Jasmine

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
November 10, 2012 by Drew

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?
October 31, 2011 by Ashlie

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 ...
November 14, 2010 by Danielle

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 ...
January 3, 2007 by Bryan

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. ...
November 15, 2013 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. ...
November 15, 2013 by Anonymous

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 ...
February 27, 2014 by cIATA

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.
May 1, 2011 by johnny

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? ...
July 4, 2008 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? ...
July 4, 2008 by MV

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?
March 14, 2011 by Sammy

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 ...
October 13, 2013 by ss01

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 ...
October 13, 2013 by Chemistry

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 ...
October 13, 2013 by sigma_pi

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.
September 20, 2010 by isoka

chemistry
Calculate the number of hydrogen atoms in 20.0 g of CH3OH
September 18, 2007 by sarah

chemistry
how many hydrogen atoms are present in 2.84 moles of water
September 30, 2009 by Anonymous

BIOLOGY
How many hydrogen atoms will bond with each nitrogen atom?
June 20, 2011 by Sherri

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...
April 15, 2010 by Tyler

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 ...
March 12, 2013 by selly

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?
February 5, 2008 by Katrina

ap chem
A mole of helium gas contains 6.02x10^23 helium atoms. How many helium atoms are there in a micromole of helium? How many moles of helium does 1.25x10^20 atoms of helium represent? ~I have no idea how to start or what the value of a micromole is? Constructive help would be ...
December 13, 2006 by sara

Science
How many hydrogen atoms are in a molecule of C8H10N4O2? wouldnt it just be 10?
September 30, 2011 by Jake

science
How many hydrogen atoms are in a molecule of C8H10N4O2? wouldnt it just be 10?
September 30, 2011 by Jake

chemistry
what is the mass in grams of 0.0850 mol of hydrogen atoms?
February 7, 2012 by Amanda

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?
April 19, 2011 by qwer

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. ...
December 28, 2012 by mary

Ap Chemistry
HOw much energy is required to ionize a mole of Hydrogen atoms?
September 8, 2011 by Ivy

Chemistry
Do 36.0 kg carbon atoms and 3.0 kg hydrogen contain the same number? Explain
January 10, 2012 by Lena s

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

Chem
How many moles of hydrogen atoms are present in 2.31x10^24 molecules of CH4?
July 17, 2012 by Kristine

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

chem
One mole of pentanol (C5H11OH) contains how many hydrogen (H) atoms?
April 27, 2014 by jay

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.
February 3, 2008 by Lauren

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 ...
December 14, 2010 by erika

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 ...
February 22, 2013 by rose

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; ...
March 3, 2007 by ana

Science Help!
When two hydrogen atoms bond with one oxygen atom to form water, what happens to the electrons? A. Each hydrogen atom donates its electron to the oxygen atom B. The oxygen atom donates an electron to each hydrigen atom C. A pair of electrons is shared at each of the hydrogen-...
November 12, 2014 by Callie

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

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

science
decomposing 0.00153 moles cholesterol will release what volume of hydrogen atoms?
October 12, 2012 by cris

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

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

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

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 ...
July 20, 2010 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 ...
July 20, 2010 by Elisabeth

chemistry
How many hydrogen atoms are ther in 18.00mg of water? 18.00 mg = 0.018 g. mols = g/molar mass.
June 24, 2007 by Brooke

9th grade biology
a fatty acid with the maxium number of hydrogen atoms possible is
August 26, 2009 by miraj

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

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

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

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 ...
January 20, 2010 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 ...
January 21, 2010 by mysterychicken

Chem 101. Science
Rank the following samples in mass from least to greatest. a) 2 x 1023 S atoms b) 0.25 mol of Cu atoms c) 2 mol of N atoms d) 6 x 1023 Na atoms
August 26, 2010 by Samuel

MATH
a molecule of sodium carbonate contains 2 atoms of sodium to every 3 atoms of oxygen. could a compound containing 12 atoms of sodiumand 15 atoms of o2 be na carbonate explai
March 4, 2014 by AMY

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...
February 16, 2014 by Roma

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

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?
April 20, 2010 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?
May 13, 2010 by someone

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.
April 7, 2011 by alana

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

Chemistry
Calculate the mass of water having the same number of hydrogen atoms as are present in 32 gm of methane.
October 15, 2014 by Axis

chemistry
Find the number of K atoms, C atoms, and O atoms in 95.5g of K2Cr2O7. (Potassium 2, Chromium 2, Oxygen 7).
February 15, 2010 by Jack

General Chemistry
Calculate the number of C atoms, H atoms, and O atoms, in 1.50 grams of glucose (C6H1206).
May 17, 2010 by Kendra

Chemistry
How many oxygen atoms are in a) 3.21 x 10^22 molecules CH3OH b) .250 mol C6H12O6 Is it a) 3.21 x 10^22 atoms b) 9.03 x 10^23 atoms
May 19, 2013 by K

chem
i need to convert the following number of atoms into grams d. 1 million atoms of Br bromine e. 3x10^23 atoms of Ne neon
January 3, 2008 by hope

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
November 10, 2012 by Marian

Science Please Check!
Which atoms are in all carbohydrates? A- carbon, phosphorus, oxygen B- carbon, nitrogen, oxygen C- carbon, hydrogen, oxygen D- carbon, hydrogen, nitrogen My choice is C. Which type of macromolecule is the sugar fructose? A- protein B- lipid C- carbohydrate D- nucleic acid My ...
October 14, 2014 by Alexandria

chemistry
I will like to know what I am doing wrong in calculating the energy difference when there is a transition of n=3 to n=2 for 1 mol of hydrogen atoms because I keep on getting 1.82*10^(5). Thanks
November 18, 2008 by rosa

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?
October 3, 2012 by Mae

Physics check
Heavier atoms are not appreciably larger in size than light atoms because the nuclei of heavy atoms have more.... nuclear energy?
April 11, 2008 by Molly

General Chemistry
Calculate the number of C atoms, H atoms, and O atoms, in 1.50 grams of glucose (C6H1206). Please explain and exact example of how to do this and what the correct answers are.
May 17, 2010 by Kendra

CHEMISTRY
although helium atoms do not combine to form He2 molecules is it fair to say that London dispersion forces (induced dipole forces)are what attract He atoms weakly to one another? The other choices are dipole-induced dipole forces Hydrogen bonding Ion-dipole forces dipole-...
May 11, 2010 by Andy

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 ...
October 18, 2007 by J

Chemistry
Question 1. (SEE QUESTION 2 ) A Compound Containing 3 Atoms Of Carbon & 8 Atoms Of Hydrogen Is Combined In A Reaction With Oxygen Molecules. The 2 End Products Of This Equation Are Carbon Dioxide &water. What Element Should You Look At 1st In Balancing This Equation? Choose a....
July 8, 2008 by Mickeyv

Chemistry
What causes cycloalkanes to have two less hydrogen atoms than similar alkanes that are open chain ones?
February 11, 2009 by Laura

Chemistry
Explain what change substituting a chlorine for one of the hydrogen atoms to make CH3Cl would create in the molecule?
March 17, 2009 by ???Help! Please and Thank You

Chemistry
What is the frequency of the photons emitted by the hydrogen atoms when they undergo transitions from n=5 to n=3? In which region of the electromagnetic spectrum does this radiation occur?
October 22, 2011 by Anonymous

Science
Citric acid has the formula C3H3OH(COOH)3. How many atoms of carbon,hydrogen and oxygen are in each molecule? Please help I don't understand this!! Thank you
November 18, 2013 by Cherie

chemistry
What is the mass of a sample of ammonia that contains 0.750 moles of hydrogen atoms? The answer is 4.26g, but I do not know how to set up the equation.
February 22, 2014 by Sandy

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 ...
April 8, 2014 by david

geology
In this problem, we will use amounts of the isotopes that are proportional to the actual amounts. Trust me, this is mathematically sound. suppose you have a samle of potassium feldspar from a rhyolite and you measure the ratio of atoms of 40 AR to 40K of .024 to 1, or for ...
October 16, 2007 by jon

chemistry
are these right? How many atoms are there in 1.3x10^22 molecules NO2? atoms=(1.3x10^22 molecules NO2) x (2atoms/1molecule) = 2.6x10^22 atoms NO2 A 5.0g sample of O2 is in a container at STP. How many atoms of oxygen are in the container? atoms = (5.0g O2) x (1mol/32g)x (6....
December 14, 2008 by s

Physics--please help!!
A hydrogen atom, when vigorously perturbed, can emit light with a frequency of 6.161014 Hz. When the same light from hydrogen atoms in a distant galaxy is observed on earth, the frequency is 5.761014 Hz. Calculate the speed at which the galaxy is receding from the earth (in ...
May 6, 2013 by Kelly

physics
A hydrogen atom, when vigorously perturbed, can emit light with a frequency of 6.16 1014 Hz. When the same light from hydrogen atoms in a distant galaxy is observed on earth, the frequency is 5.21 1014 Hz. Calculate the speed at which the galaxy is receding from the earth...
May 18, 2011 by Joan

chem
Given: 3H2(g) + N2(g) 2NH3(g) If the reaction starts with 0.500 mol of H2, how many atoms of hydrogen in the compound NH3 would you expect to make?
February 13, 2010 by kp

chemistry
1.calculate d nos of molecules and atoms in following cases: (a).0.25 moles of water' b.32 gramms of SO2?c) 0.45 litres of hydrogen measured to 25c and 0.9 atm.
June 15, 2011 by tilo

Chemistry
Can someone check to see if my answers look ok. For the following crystals, explain how their melting points are related to the bonding forces and the crystal structure: a)Copper,Cu Copper has metallic bonds between atoms. It can occur as isometric cubic and octahedral ...
January 21, 2008 by Nancy

Science
1) A(n)_________ is made up of two or more different atoms that are chemically combined.(1point) Compound Molecule*** Element Atom 2) Which of the following is a pure substance? (1point) Chocolate milk Orange juice Seawater Hydrogen peroxide (H2O2)*** 3) Which of the following...
October 3, 2013 by Gabby

Chemistry
Which of the following is an example of a Homogeneous mixture? a. the hydrogen and oxygen atoms that make up water b. A typical soil sample c. a bottle of table vinegar
July 7, 2008 by Mickey

Chemistry
Which of the following atoms would have the greatest velocity if each atom had the same kinetic energy? Ammonia? Bromine? Hydrogen? Chlorine?
April 13, 2010 by Lee

Chemistry
This is the first in a series of hw pages. If anyone would be able to help me with this one I think I would be able to complete the other 20 hw questions I have. Thanks to anyone that helps. For each definition, find a corresponding term from the following list: alkane,alkene...
July 20, 2010 by Drew

Chemistry
What is a example of homogeneous mixture? IS hydrogen and oxygen atoms that make up water an example
July 10, 2008 by JenniferT

Chemistry
Which one of these has the smallest # of hydrogen atoms? a) Butyne b) Butane c) Butyne d) Cyclobutane Is the answer c)?
November 24, 2010 by Lindsay

General Chemistry
Calculate the number of C atoms, H atoms, and O atoms, in 1.50 grams of glucose (C6H1206). I do not understand how to calculate this. Please explain and post the correct answers.
May 17, 2010 by Kendra

chemistry
Determine the number of moles of a) N atoms in 42.5g of Mg(NO3)2 b) N atoms in a sample of C7H5(NO2)3 that has the same number of O atoms as 12.6g C6H12O6
September 19, 2008 by tomi

science
radioactive decay occurs when atoms a) lose mass b) join with atoms of another element c) break down to form atoms of another element d) are exposes to chemical weather
December 13, 2013 by victoria

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