In a sample of hydrogen gas there are 4.92 x 10^ 18 hydrogen atoms. How many...

In a sample of hydrogen gas there are 4.92 x 10^ 18 hydrogen atoms. How many methane molecules (CH4) could be formed? Please explain how you got to the answer and the answer........

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queen_honey_blossom answered 2 years ago

A 1-mole sample of hydrogen gas has the same number of hydrogen atoms as a 1-mole...

A 1-mole sample of hydrogen gas has the same number of hydrogen atoms as a 1-mole sample of water molecules (H2O). true or false?

how many hydrogen atoms are in 345.3 grams of iron (III) hydrogen phosphate?

For a gas of neutral hydrogen atoms, at what temperature will equal numbers of atoms have...

For a gas of neutral hydrogen atoms, at what temperature will equal numbers of atoms have electrons in the a) ground state (n = 1) and in the first excited state (n = 2) and b) the ground state (n = 1) and second excited state (n = 3)? Show all work.

How many lysine residues become aldehydes in the Schiff base crosslink? How many hydrogen atoms are...

How many lysine residues become aldehydes in the Schiff base crosslink? How many hydrogen atoms are on a proline nitrogen atom at pH = 7 when the proline nitrogen forms a pepetde bond with another amino acid? What fraction of the amino acids in the collagen peptide are glycine?

18. Hydrogen gas reacts with oxygen gas to form water vapor. If 34.5 g of hydrogen...

18. Hydrogen gas reacts with oxygen gas to form water vapor. If 34.5 g of hydrogen gas react with 26.6 g of oxygen gas, how many grams of water vapor will be produced? 2H2(g) + O2(g) --> 2H2O(g) 20. The reaction of 22.5 g of Fe with excess of oxygen gas produced 24.2 g of Fe2O3. Calculate the percent yield. 21. Milk of magnesia contains magnesium hydroxide. Mg(OH)2 reacted with HCl to form aqueous magnesium chloride and liquid water. Write...

1. How many neutrons are there in oxygen? In hydrogen? In nitrogen? 2. Distinguish between atoms...

1. How many neutrons are there in oxygen? In hydrogen? In nitrogen? 2. Distinguish between atoms and molecules and among protons, neutrons, and electrons. 3. Compare and contrast covalent bonds and ionic bonds. 4. Explain how polar covalent bonds allow hydrogen bonds to form, and provide an example. 7. Define pH scale, acid, base, and buffer. How do buffers reduce changes in pH when hydrogen ions or hydroxide ions are added to a solution? Why is this phenomenon important in...

a) How many grams of hydrogen gas (H2) is produced by the decomposition of 43.7g of...

a) How many grams of hydrogen gas (H2) is produced by the decomposition of 43.7g of ammonia gas (NH3)? b) If 12.0 moles of H2 were produced, how many grams of NH3 was decomposed? c) If 12.0 moles of H2 were produced, how many moles of N2 were produced?

A mole of atoms is 6.02 x 10^23 atoms. To the nearest order of magnitude, how...

A mole of atoms is 6.02 x 10^23 atoms. To the nearest order of magnitude, how many moles of atoms are in a 8 kg domestic cat? The masses of a hydrogen atom, an oxygen atom, and a carbon atom are 1.0 u, 16 u, and 12 u, respectively. (Hint: Cats are sometimes known to kill a mole.)

A sample of fluorine has a mass of 27.2 grams. How many f atoms are there...

A sample of fluorine has a mass of 27.2 grams. How many f atoms are there in the sample? atoms How many f2 molecules are there in the sample? molecules

Electrons accelerated by a potential difference of 13.15 V pass through a gas of hydrogen atoms...

Electrons accelerated by a potential difference of 13.15 V pass through a gas of hydrogen atoms at room temperature. Calculate the wavelength of light emitted with the longest possible wavelength. Calculate the wavelength of light emitted with the shortest possible wavelength.

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