Chemistry, 08.01.2020 21:31 Kyliehayden05

Ahydrate of cocl2 with a mass of 6.00g is heated strongly. after cooling, the mass of the anhydrate is 3.27g. what is the formula of the cocl2 hydrate?

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Answer from: penacesar18p9jrdh

Answer : The formula for the CoCl_2 hydrate is CoCl_2.6H_2O

Explanation : Given,

Mass of hydrate of CoCl_2 = 6.00 g

Mass of CoCl_2 = 3.27 g

First we have to calculate the mass of water.

Mass of water = Mass of hydrate of CoCl_2 - Mass of CoCl_2

Mass of water = 6.00 - 3.27 = 2.73 g

Now we have to calculate the moles of $CoCl_2\text{ and }H_2O$

Molar mass of CoCl_2 = 129.8 g/mole

Molar mass of H_2O = 18 g/mole

$\text{ Moles of }CoCl_2=\frac{\text{ Mass of }CoCl_2}{\text{ Molar mass of }CoCl_2}=\frac{3.27g}{129.8g/mole}=0.0252moles$

and,

$\text{ Moles of }H_2O=\frac{\text{ Mass of }H_2O}{\text{ Molar mass of }H_2O}=\frac{2.73g}{18g/mole}=0.152moles$

Now we have to calculate the mole ratio of the given molecules.

For the mole ratio, we divide each value of the moles by the smallest number of moles calculated which is 0.0252 moles.

For CoCl_2 = $\frac{0.0252}{0.0252}=1$

For H_2O = $\frac{0.152}{0.0252}=6.03\approx 6$

The ratio of CoCl_2:H_2O=1:6

Hence, the formula for the CoCl_2 hydrate is CoCl_2.6H_2O

Answer from: Quest

explanation:

the largest database of organic compounds lists about 10 million substances, which include compounds originating from living organisms and those synthesized by chemists. the number of potential organic compounds has been estimated at 1060—an astronomically high number. the existence of so many organic molecules is a consequence of the ability of carbon atoms to form up to four strong bonds to other carbon atoms, resulting in chains and rings of many different sizes, shapes, and complexities. the simplest organic compounds contain only the elements carbon and hydrogen, and are called hydrocarbons. even though they are composed of only two types of atoms, there is a wide variety of hydrocarbons because they may consist of varying lengths of chains, branched chains, and rings of carbon atoms, or combinations of these structures. in addition, hydrocarbons may differ in the types of carbon-carbon bonds present in their molecules. many hydrocarbons are found in plants, animals, and their fossils; other hydrocarbons have been prepared in the laboratory. we use hydrocarbons every day, mainly as fuels, such as natural gas, acetylene, propane, butane, and the principal components of gasoline, diesel fuel, and heating oil. the familiar plastics polyethylene, polypropylene, and polystyrene are also hydrocarbons. we can distinguish several types of hydrocarbons by differences in the bonding between carbon atoms. this leads to differences in geometries and in the hybridization of the carbon orbitals.

Answer from: Quest

The correct answer is d

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Ahydrate of cocl2 with a mass of 6.00g is heated strongly. after cooling, the mass of the anhydrate...