Molecular Mass

The molecular mass of 2-pentanone (C5H10O) is 86.13 g/mol.

The name diphosphorus pentoxide indicates that there are (exactly) five oxygen atoms in each molecule. Therefore, 3.45 mol contains 17.25 mol of oxygen atoms. However, at standard temperature and pressure, oxygen exists in the form of divalent molecules. Therefore, if the question pertains to oxygen under such conditions, the correct answer is 8.62 mol, to the justified number of significant digits.

Atomic mass for carbon,hydrogen and oxygen are 12,1 and 16 respectively.since the molecular formula of vitamin K is C31H46O2, then the respective atomic mass for each element are substituted in the molecular formula. That is,the total number of carbon present is 12 multiplied by 31 which gives 372,the total number of hydrogen present is 1 multiplied by 46 which gives 46,and finally the total number of oxygen present is 16 multiplied by 2 which gives 32.The total addition of all these gives the molecular mass 450g.

answer 450.7

I just thought it was 1.48 g/cm3 because that is the density of a chloroplast. Hope this helps.

Amino acids like Glycine tend to exist mainly as Zwitterions in solution or solid state. This means that strong electrostatic attractions between opposite charges arise and potentially leads to HIGH melting points (temperatures).

The mass of five liters of air at 20 degrees Celsius can be calculated using the ideal gas law equation (PV = nRT), where P is pressure, V is volume, n is the number of moles, R is the gas constant, and T is temperature in Kelvin. You would need to know the pressure of the air to calculate the mass accurately.

The molecular mass of vitamin C (ascorbic acid) is 176,1241 and the chemical formula is C6H8O6.

False. Compounds that are similar to water in molecular mass can exist in various states of matter depending on their chemical properties. For example, compounds like ethanol and methanol, which have similar molecular masses to water, can exist as liquids at room temperature.

To find the molecular formula of carbon monoxide (CO), first find its empirical formula. The empirical formula is CO (1:1 ratio of atoms). Since the molecular mass of CO is 28.01 g/mol, and carbon's molar mass is 12.01 g/mol, the mass of oxygen in CO is 28.01 - 12.01 = 16 g/mol. Since the molecular mass of oxygen is 32.00 g/mol, CO's molecular formula is CO2.

We use the term formula mass for ionic compounds because they do not exist as discrete molecules like covalent compounds. Instead, ionic compounds exist as a three-dimensional array of ions arranged in a crystal lattice. Therefore, the term formula mass better reflects the overall mass of the compound, considering all the atoms and ions present in its formula unit.

To find the molecular formula from the empirical formula, we need to know the molar mass of the empirical formula. In this case, the empirical formula's molar mass is 88. To find the molecular formula, we divide the given molecular mass (176) by the empirical formula's molar mass (88) to get 2. This means the molecular formula of Vitamin C is twice the empirical formula, so the molecular formula is C6H8O6.

The gram molecular mass of H2SO4 is approximately 98 grams per mole. This is calculated by adding up the atomic masses of the elements in the compound: 2 hydrogen atoms (2 g/mol), 1 sulfur atom (32 g/mol), and 4 oxygen atoms (64 g/mol).

C20 = 12.01 x 20 = 240.2 grams
H30 = 1.008 x 30 = 30.24 grams
O = 16.00 x 1 = 16.00 grams
Total = 286.44 grams/mole or 286.44 amu/per molecule

The molecular formula for styrene is C8H8. This is derived by multiplying the empirical formula (CH) by a factor of 8 to get the molecular formula. Styrene consists of 8 carbon atoms and 8 hydrogen atoms.

The rate of diffusion is inversely proportional to the square root of the molecular mass of the gas. Since the unknown gas diffuses 0.25 times as fast as helium, it means the square root of the molecular mass of the unknown gas is 4 times that of helium, thus the molecular mass of the unknown gas is 16 times that of helium, which is approximately 64 g/mol.

Without additional information, it is impossible to determine the molecular mass of the blue molecules based solely on the molecular mass of the yellow molecules. Each type of molecule has its own unique molecular mass, and it cannot be inferred from other molecules.

The molecular mass of water (H2O) is 18, which means the total mass of one oxygen atom and two hydrogen atoms is 18. Since the atomic mass number of hydrogen is 1, the atomic mass of oxygen can be calculated as 16 (18 - 2).

The molecular weight of oxygen is 16. Its atomic symbol is O and atomic number is 8. It is a gas in its natural state.

Ammonium sulphate, (NH4)2SO4, is not a molecular compound. It is a an ionic compound with a formula unit. The mass of the formula unit is determined by doing the following:

N: 2 x 14.0067g = 28.0134g

H: 8 x 1.00974g = 8.06352g

S: 1 x 32.065g = 32.065g

O: 4 x 15.9994g = 63.9976g

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Total mass 132.140g

The mass of one formula unit of is 132.140g.

Dissolve 90 g of glucose in a small volume of water, and then add more water until the total volume of the solution is 1 L.

The molecular mass of an aldehyde depends on the specific compound. For example, the molecular mass of formaldehyde (CH2O) is 30.03 g/mol, while the molecular mass of acetaldehyde (C2H4O) is 44.05 g/mol. You can calculate the molecular mass by adding up the atomic masses of all the atoms in the compound.

Methane has four hydrogen atoms attached to a central carbon atom. Their atomic masses are 1 and 12 respectively. The RMM of methane is 4x1+12=16.