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Molecular Mass
Molecular mass measures the mass of a molecule. It is measured by adding together the atomic masses of atoms the molecule is made of.
500 Questions
Molar mass of Iron 3 carbonate?
Asked by Wiki User
I'm sure that you cannot have the formation of Iron (iii) carbonate due to it's strong acidic nature, however when we have iron(iii)hexa-aqua ions and add some carbonate, which acts as a base, we form iron(II) carbonate. FeCO3. This is just what I have learnt feel free to challenge or correct me anyone.
How many atoms are in 6.75 multiply by 10 negative 2 moles of mercury?
Asked by Chrissyworlandstewartfb4469
7.4 x (6.02 x 1023) = 4.4548 x 1024 atoms of mercury.
A mole is simply a unit of measurement, like a kilometer or a mile. Just like a kilometer contains 1,000 meters, a mole contains 6.02 x 1023 atoms. Therefore 1 mole of anything, be it mercury atoms, water molecules, or even oranges will always be 6.02 x 1023.
The molecular mass of 2 moles in H2SO4?
Asked by Wiki User
2 moles H2SO4 (98.086 grams/1 mole H2SO4)
= 196.172 grams of sulfuric acid
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The molecular mass of Vitamin C?
Asked by Wiki User
The molecular mass of vitamin C (ascorbic acid) is 176,1241 and the chemical formula is C6H8O6.
How do you find the molecular formula from molar mass?
Asked by Wiki User
you have to test it first in an experiment, and then you have to write down your explanation of what you've just seen. In order to do that, you have to put 2 cups, label them with element B (E.B) and label the other cup with element A (E.A). put water in both and miz it with sugar, vinigar, salt, and cranberry juice. stir it and wa lah you just found the moluar mass. Moluar Mass=9+16.17/8*x-p*4^9
How many moles of H20 are in 3.6 x 1024 molecules of H20?
Asked by Wiki User
divide this number by avagadros number to get moles.
(5.16x1024)/(6.02x1023)=8.57mol of H2O
as there are 3 atoms in each molecule there are 3x8.57=25.7 moles of atoms.
How many moles of O2 are needed to burn 1.35mol of C8H18?
Asked by Wiki User
16,875 moles of oxygen are needed.
What is the molecular mass of MgSO4.7H2O?
Asked by Wiki User
The molar mass of anhydrous MgSO4 is 120,366 g.
What is the molecular mass of CH3CH2Cl?
Asked by Wiki User
The molecular weight of acetic acid (CH3CO2H) can be calculated from the component atomic weights of each of the atoms present in the molecule.
In this particular example (C2H4O2) there are:
2 Carbon atoms with molecular weight of 12.01 = 24.02
4 Hydrogen atoms with molecular weight of 1.008 = 4.032
2 Oxygen atoms with molecular weight of 16.00 = 32.00
Therefore the total molecular weight of Acetic acid = 60.05 grams per mole
How many atoms are in .750 moles of zinc?
Asked by Wiki User
15.0553*1023 Zn atoms
By definition of the 'mole' there are ALWAYS 6.02214*1023 particles (of any kind) in ONE mole of that matter. (This BIG number is called the Avogadro number or constant)
So this is true for atoms Zn in 1 mole pure zinc, for H2O molecules in 1 mole water, even for sand particles in 1 mole sand (but there is not so much sand in a desert)
What is the gram molecular mass of lithium bromide?
Asked by Wiki User
The atomic mass of lithium is 7. The atomic mass of the bromide ion is 80. Therefore the molecular mass is 87u.
How many grams in 2 moles of methane?
Asked by Wiki User
The amount of grams in two moles depends on the element or compound that you have two moles of. For example, the molar mass of oxygen is about 16 grams. So two moles of oxygen would be about 32 grams.
What is the molecular mass of ether?
Asked by Wiki User
I will assume the ether behaves as an ideal gas. In that case, a mole (gram molecular weight) of the gas occupies 22.4 liters at STP.
If 3.96 liters weigh 8.12 grams, then 22.4 liters weighs x where:
8.12/3.96 = x/22.4
Turn the crank, and 22.4 liters of ether weigh 45.9 grams, the gram molecular weight of ether.
What is the molecular formula of a compound that contains 10.25 grams Nitrogen 23.35 grams oxygen and molecular mass of 92.0 grams per mole?
Asked by Wiki User
The question is missing something; I must assume that the compound is 23% N by mass and 77% O by mass. Starting with NO3 as an initial guess turns up 22.6% N, 77.4% O, which agrees with the above if we round off to two significant figures. It has a molar mass of 62, precisely half the stated molecular mass. One could presume a dimer of NO3, i.e., N2O6, which is hardly a common species but does appear in the literature.
What is molecular mass of cupric sulfate?
Asked by Wiki User
Do you ant the mass of one molecule of this also? or the molar mass?
do you want calculations also for it?
I'm going to decide your trying to find the molar mass (Given now by M, previously by Mr). as u have not given the amount of mole (n) in your question for me to find the mass of an amount of Cu3PO4.
molar mass of Copper Phosphate is calculated as follows:
refering to the periodic table, Find the atmoic weight of Copper (Cu), Phosphorus (P) and Oxygen (O). knowing that the formula for Copper Phosphate also helps: this is Cu3PO4.
From this it can be seen there are 3x Copper atoms, one Phosphorus atom, and 4x oxgen atoms.
The atomic weights of these elements can be found on a periodic table.
(these may vary in accuracy depending one the periodic table you use)
Cu = 63.5g/mol
P=30.97g/mol
O= 16.00g/mol
The units for these are grams per mole. mol is short for mole. (i know dropping an e isn't much but that's crazy chem people for you).
So we know we have 3 Cu, and 1 phosphus , and 4 oxygens. So therfore the molar mass (Cu3PO4.) is:
(63.5x3)+(1x30.97)+(16x4)= 285.47g/mol
hope that's what your lookng for. if not just say. . :)
How many moles of mercury are there in 159 g of mercury?
Asked by Wiki User
620 grams mercury (1 mole Hg/200.6 grams)
= 3.09 moles Hg
How many moles are in 2.3grams of phosphorus?
Asked by Wiki User
n=m/M so, the atomic number for Phosphorus is 30.973... we divide the atomic number by the amount of grams we have so n= 2.3/ 30.973= 0.07425822490556
= 0.14 mol.
How many moles are in 14.5 cm3 of platinum. The density of platinum 21.45 gcm3?
Asked by Wiki User
The answer is 1,594 mol.
How many moles of atoms are in 150 g sulfur?
Asked by Wiki User
The reaction equation is 2 NaHCO3 + H2SO4 = 2 CO2 + 2H2O + Na2SO4. This means that for every mole of sulfuric acid, two moles of NaHCO3 are needed. 150 grams of H2SO4 is 1.53 moles, so 3.06 moles of NaHCO3 are required.
How many moles are present in 288 grams of oxygen?
Asked by Wiki User
Oxygen is a diatomic gas, so a molecule of oxygen contains two oxygen atoms.
One oxygen atom has an atomic weight of 16.00 amu (atomic mass units), so diatomic oxygen has a molecular weight of 16.00 × 2 or 32.00 amu
amu (a.k.a., molar mass) are in units of grams/mol, so by dividing:
8.0 g O2 ÷ 32.00 g/mol O2 = 0.25 mol O2
One mol contains 6.022 × 1023 molecules (Avogadro's number), which can be multiplied by our 0.25 mol O2 to get the number of moles in 8.0 grams O2:
0.25 mol O2 × (6.022 × 1023) = 1.5055 × 1023 molecules
Don't forget to round to two significant figures (limited in precision by the 8.0 grams given):
There are 1.5 x 1023 molecules of O2 in 8.0 grams of O2
Why do chemist work with moles of individual atoms?
Asked by Wiki User
They need a counting unit to count the number of atoms, molecules, or formula units of a substance.
