Answer:
Alchemy is a practice of making gold from other metals.
Explanation:
Alchemy is a method which is practiced by the ancient scientists of Europe, Africa and Asia trying to produced gold from other metals. This method was failed to produced gold from metals and all scientist suggested that metals can not be converted into gold. Greeks were the people who presented the theory of alchemy in the first few centuries of CE.
Answer:
there are 2.2 moles of Li in 15 grams of Li
Explanation:
Many transition metals cannot lose enough electrons to attain a noble-gas electron configuration. In addition, the majority of transition metals are capable of adopting ions with different charges.
Answer:
Percentage yield = 75.03%
Explanation:
Actual yield = 6.13
Theoretical yield = 8.17g
Percentage yield = ?
Percentage yield of compound in a reaction is the percentage ratio of actual yield to theoretical yield of that compound
Percentage yield = (actual yield / theoretical yield) * 100
Percentage yield = (6.13/8.17) * 100
Percentage yield = 0.7503 * 100
Percentage yield = 75.03%
Percentage yield of water in the reaction is 75.03%
No a flame doesn't always give heat because sometimes fire can burn but it doesn't have heat
