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Cobalt (III) hydroxide's formula is Co(OH)3
MOLES are found by grams you have/ molar mass of the molecule.
To find the molar mass, you must first find the masses of the elements. In Co(OH)3 there are 3 elements: Cobalt (Co), Oxygen (O), and Hydrogen (H)
Cobalt's Atomic Mass is 58.933 (but we'll round that 59)
Oxygen's atomic mass is 15.999 (but we'll round that 16)
Hydrogen's atomic mass is 1.0079 (but we'll just call that 1.)
BUT WAIT. THERE'S MORE.
There is 1 Cobalt atom, so we'll keep 59.
There are THREE Oxygen atoms, so we have to multiply 16 by 3. (That's 48.)
And there are also THREE Hydrogen atoms, so we have to multiply 1 by 3. (That's 3, but I'm sure you knew that.)
So let's add them up: 59 + 48 + 3 = 110 grams.
Almost there!
3.96 /110 = .036 moles.
CHEMisTRY!
Wiki User
∙ 12y ago
Wiki User
∙ 15y agoMolar mass of Co = 58.933200 g/mol
Wiki User
∙ 12y agoRemembering that:
m=n * Mr which is mass=number of moles multiplied by molar mass.
So,
m=1*(12.01+16.00)
= 28.01g
Wiki User
∙ 10y agoCobalt's atomic mass is about 58.93 (according to the periodic table) so the mass of 1 mole of cobalt atoms will be 58.93 grams.
Wiki User
∙ 11y ago1 mole Co = 58.93320 grams (atomic weight from Periodic Table in grams)
118g Co x 1mol/58.93320g = 2.00 moles Co
Wiki User
∙ 13y ago10 grams of cobalt are in 2 moles
Wiki User
∙ 10y agoyes
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What is the mass in grams of 0.0489 mol cobalt?
The gram atomic/molar mass of cobalt is 63.546. Multiplying this number by 0.0489 yields the answer of 3.11 grams, to the justified number of significant digits.
How many moles of atoms are contained in 22.6 g of the Co?
1 mole Co = 58.933g Co (atomic weight in grams)1 mole Co atoms = 6.022 x 1023 atoms CoConvert grams Co to moles Co.22.6g Co x (1 mole Co/58.933g) Co = 0.383 mole CoConvert mole Co to atoms Co.0.383 mole Co x (6.022 x 1023 atoms Co/1 mole Co) = 2.31 x 1023 atoms Co
How many moles is 14 g of CO gas?
Remember the equation Moles = mass(g) / Relative Atomic/molecular mass (Ar/Mr) moles = mass(g) / Ar/Mr The mass is 14 g The Mr for CO is:- From the Periodic Table Mass of C = 12 and mass of O = 16 12 + 16 = 28 Substituting moles(CO = 14g / 28 moles = 0.5 ( or 1/2 mole)
How many grams of calcium in 34.5 of Ca CO 3?
34.5 g CaCO3 (1 mole CaCO3/100.09 g)(1 mole Ca/1 mole CaCO3)(40.08 g/1 mole Ca) = 13.8 grams calcium ===============
How many grams of CO are produced when 36.0g of C reacts?
C + 1/2 O2 ----> CO ------> mole basis 12 C + 16 O2 ----> 28 CO -----> mass basis CO made = ( 36 g C ) ( 28 g CO / 12 g C ) = 84 g CO <-----------------
What is the molar mass for carbon moxoxide CO?
Molecular mass of CO = atomic weight of O + atomic weight of C = 28,01 g
What is the mass in grams of 0.0489 mol cobalt?
The gram atomic/molar mass of cobalt is 63.546. Multiplying this number by 0.0489 yields the answer of 3.11 grams, to the justified number of significant digits.
What is the atomic mass for cobalt?
57 grams Florine (1 mole F/19.00 grams)(6.022 X 10^23/1 mole F) = 1.8066 X 10^24 atoms Florine 1.8066 X 10^24 atoms (1 mole Co/6.022 X 10^23)(58.93 grams/1 mole Co) = 176.79 grams of cobalt ( sigi figi might be 180 grams )
How many moles of atoms are contained in 22.6 g of the Co?
1 mole Co = 58.933g Co (atomic weight in grams)1 mole Co atoms = 6.022 x 1023 atoms CoConvert grams Co to moles Co.22.6g Co x (1 mole Co/58.933g) Co = 0.383 mole CoConvert mole Co to atoms Co.0.383 mole Co x (6.022 x 1023 atoms Co/1 mole Co) = 2.31 x 1023 atoms Co
How many moles of CO in 1.23g of it?
For this you need the atomic (molecular) mass of CO. Take the number of grams and divide it by the atomic mass. Multiply by one mole for units to cancel.4.5 grams / 28.0 grams = .161 moles CO
What is the mass of one mole in urea?
Pure Urea (H2N-CO-NH2) has a mole wt of 60.06. SO ... 60.06 gm is one gm mole.
How many moles is 14 g of CO gas?
Remember the equation Moles = mass(g) / Relative Atomic/molecular mass (Ar/Mr) moles = mass(g) / Ar/Mr The mass is 14 g The Mr for CO is:- From the Periodic Table Mass of C = 12 and mass of O = 16 12 + 16 = 28 Substituting moles(CO = 14g / 28 moles = 0.5 ( or 1/2 mole)
How many carbon atoms are in 5.34 grams of tungsten hexacarbonyl?
5.34 grams W(CO)6 (1 mole W(CO)6/351.86 grams)(6 moles C/1 mole W(CO)6)(6.022 X 1023/1 mole C) = 5.48 X 1022 atoms of carbon ========================
How much CoCl6H2O can you use to supply 2.75ug Co?
2.75 micrograms? 2.75 ug Co (1 gram/10^6 ug)(1 mole CoC16H2O/1 mole Co)(269.106 grams/1 mole CoC16H2O) = 7.4 X 10^-4 grams * 10^6 = 740 micrograms ----------------------
What is the reactants total mass of CO?
C = 12O = 16 CO = 28 g for 1 mole
How many grams of calcium in 34.5 of Ca CO 3?
34.5 g CaCO3 (1 mole CaCO3/100.09 g)(1 mole Ca/1 mole CaCO3)(40.08 g/1 mole Ca) = 13.8 grams calcium ===============
If you have 345.23 grams of CO how many moles of CO do you have?
To do this, you need to know the molecular weight of the element you're dealing with, by adding up the atomic weights of the elements involved (found on any periodic table). The molecular weight is the mass in grams of the compound in one mole - this will provide you with a conversion factor. So take the measurement in grams and divide it by the molecular weight to convert to moles. Really what you're doing is multiplying the number by 1 mole, and dividing it by the equivalent of one mole, the molecular weight. That's the thought process behind unit analysis and how you get your "units to cancel".In this case, the answer is about 12.33 moles carbon monoxide.
