(a)
Interpretation: If the elements silicon is hazardous, rare or neither should be identified.
Concept Introduction:
About 90% of earth is made up of 4 elements namely, iron, oxygen, magnesium and silicon. The other elements present in more than 1% are nickel, calcium, aluminum and sulfur. Elements such as sodium, potassium, chromium, cobalt, phosphorus, manganese and titanium are present in 0.1 to 1% range thus, they are rare elements. Some elements are considered to be hazardous as they affect the environment. They can be present in any components of the environment: atmosphere, land and water. They can be highly toxic and hazardous to humans.
(b)
Interpretation: If the elements neodymium is hazardous, rare or neither should be identified.
Concept Introduction:
About 90% of earth is made up of 4 elements namely, iron, oxygen, magnesium and silicon. The other elements present in more than 1% are nickel, calcium, aluminum and sulfur. Elements such as sodium, potassium, chromium, cobalt, phosphorus, manganese and titanium are present in 0.1 to 1% range thus, they are rare elements. Some elements are considered to be hazardous as they affect the environment. They can be present in any components of the environment: atmosphere, land and water. They can be highly toxic and hazardous to humans.
(c)
Interpretation: If the elements mercury is hazardous, rare or neither should be identified.
Concept Introduction:
About 90% of earth is made up of 4 elements namely, iron, oxygen, magnesium and silicon. The other elements present in more than 1% are nickel, calcium, aluminum and sulfur. Elements such as sodium, potassium, chromium, cobalt, phosphorus, manganese and titanium are present in 0.1 to 1% range thus, they are rare elements. Some elements are considered to be hazardous as they affect the environment. They can be present in any components of the environment: atmosphere, land and water. They can be highly toxic and hazardous to humans.
(d)
Interpretation: If the elements oxygen is hazardous, rare or neither should be identified.
Concept Introduction:
About 90% of earth is made up of 4 elements namely, iron, oxygen, magnesium and silicon. The other elements present in more than 1% are nickel, calcium, aluminum and sulfur. Elements such as sodium, potassium, chromium, cobalt, phosphorus, manganese and titanium are present in 0.1 to 1% range thus, they are rare elements. Some elements are considered to be hazardous as they affect the environment. They can be present in any components of the environment: atmosphere, land and water. They can be highly toxic and hazardous to humans.
(e)
Interpretation: If the elements lead is hazardous, rare or neither should be identified.
Concept Introduction:
About 90% of earth is made up of 4 elements namely, iron, oxygen, magnesium and silicon. The other elements present in more than 1% are nickel, calcium, aluminum and sulfur. Elements such as sodium, potassium, chromium, cobalt, phosphorus, manganese and titanium are present in 0.1 to 1% range thus, they are rare elements. Some elements are considered to be hazardous as they affect the environment. They can be present in any components of the environment: atmosphere, land and water. They can be highly toxic and hazardous to humans.
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Chapter 2 Solutions
Chemistry For Changing Times (14th Edition)
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- 2-(3-Aminopropyl)cyclohexan-1-one is reacted with H₂SO₄. Draw the structures of the products.arrow_forwardPlease help me solve number 2arrow_forwardChoose the best reagents to complete the following reaction. 오 Na2Cr2O7 H2SO4, H2O Problem 22 of 35 A Na2Cr2O7 H2SO4, H2O H2/Pt B pressure OH 1. NaBH4 C 2. H3O+ D DMP (Dess-Martin Periodinane) CH2Cl2 CrO3 Done Dramabana_Minor Submitarrow_forward
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- Question 4 For the molecule shown below, (7 marks): A) Sketch the Newman projection for the view looking along the bond from the perspective of the arrow. B) Then, draw the Newman projection for each 60° rotation along the bond until it returns to the starting point. C) Clearly indicate which Newman projection is the one we see in the structure shown below, and clearly indicate which Newman projection is the highest in energy and which is the lowest in energy. H H Me 'H Me Mearrow_forwardDraw the major product of this reaction. Ignore inorganic byproducts and the amine side product. 'N' 1. NaOH, heat 2. Neutralizing work-up Select to Drawarrow_forwardSubmit Problem 3 of 10 Draw the major product of this reaction. Ignore inorganic byproducts and the amine side product. O 'N' NH 1. NaOH, heat 2. Neutralizing work-up Select to Drawarrow_forward
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