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2 answers:
Answer:
Explanation:
The Stock System states that In a chemical formula or equation, some metals need a roman numeral after their symbol. If a metal has <u>multiple oxidation states</u>, it needs a roman numeral.
Use the Periodic Table to see the oxidation states for each metal.
- Cobalt (Co): +3, +2
- Lithium (Li): +1
- Barium (Ba): +2
- Iron (Fe): +3, +2
- Copper (Cu): +2, +1
- Potassium (K): +1
We can see that <u>cobalt, iron, and copper</u> have more than one oxidation state, so they would require a roman numeral.
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Answer : The correct options are, and
Explanation :
Single displacement reaction : It is a type of chemical reaction in which the more reactive element displaces the less reactive element.
Option A reaction :
It is an example of double displacement reaction because in this reaction a positive cation and a negative anion of the two reactants exchange their places to form two new products.
Option B reaction :
It is an example of single displacement reaction.
Option C reaction :
It is an example of combination reaction because in this reaction two reactants react to give a single product.
Option D reaction :
It is an example of decomposition reaction because in this reaction a single reactant decomposes into two or more products.
Option E reaction :
It is an example of single displacement reaction because in this reaction the most react element, aluminium displaces the less reactive element, hydrogen.
Hence, the options B and E are single displacement reactions.
Answer:
Explanation:
Hello,
In this case, we can first compute the volume of the sample in mL from the ounces:
Thus, with the volume of the sample, we can compute the amount of sugar given the 10 g of sugar per 100 mL of soft drink as shown below:
Best regards.