Answer : The charge carried by a phosphide ion is, (-3)
Explanation :
In phosphide ion, the (-ide) indicates that the phosphide ion is the anion of phosphorous. So, we will have to add electrons.
As we know that the phosphorous belongs to group 5 and have 5 valence electrons.
The atomic number of phosphorous = 15
The electronic configuration of phosphorous is, 
In phosphorous, the 'p' sub-shell is half filled. For fully filled 'p' sub-shell, we will need '3' electrons. By adding 3 electrons in 'p' sub-shell of phosphorous, (-3) charge will be created on phosphorous and named as phosphide ion.
Phosphide ion is written as, 
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Answer:
The term HYDROCARBONS means organic compounds which contain only carbon and hydrogen. By using this definition, four classes of hydrocarbons are included: alkanes, alkenes, alkynes and aromatic.
Hydrocarbons are organic compounds composed of only carbon and hydrogen. The alkanes are saturated hydrocarbons—that is, hydrocarbons that contain only single bonds. Alkenes contain one or more carbon-carbon double bonds.
The land of mass that is surrounded by water has more stable climate and smaller temperature flactuation is because of the property of water called specific heat, water has a specific heat of 4180 J/kg C this means that it needs a lot of energy to raise the temperature of water and also vice versa. unlike in the area surrounded by mass like deserts where the sand has a specific heat of about 880 j/kg C which means it only needs small amount of energy to raise its temperature and also to cool down, that is why during at morning in the desert is too hot while at night it is too cold
Answer:
1.14 moles of oxygen will react
Explanation:
The balanced equation of reaction between iron and oxygen is
4 Fe + 3 O₂ → 2 Fe₂O₃
By stoichiometry of the reaction (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of each compound participate in the reaction:
- Fe: 4 moles
- O₂: 3 moles
- Fe₂O₃: 2 moles
The molar mass of iron being Fe 55.85 g/mole, then the following amount of mass reacts by stoichiometry: 4 moles* 55.85 g/mole=223.4 g
You can apply the following rule of three: if by stoichiometry 223.4 grams of Fe react with 3 moles of O₂, 84.9 grams of Fe react with how many moles of O₂?
moles of O₂= 1.14 moles
<u><em>1.14 moles of oxygen will react</em></u>
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