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Concept explainers
(a)
Interpretation:
Whether oxygen is more abundant or less abundant than hydrogen in Earth’s crust has to be indicated.
Concept Introduction:
Element is a pure substance and it cannot be broken down into simpler pure substance by chemical means like
Elements that are laboratory synthesized are radioactive in nature and they convert back into the original naturally occurring element by emission of radiation. All the elements that occur naturally are not evenly distributed on earth and universe.
Radiations that are emitted from stars can be used to estimate the elemental composition of universe. This indicates that hydrogen and helium are mostly dominant. On Earth’s crust oxygen and silicon are the two elements that account for about
(b)
Interpretation:
Whether iron is more abundant or less abundant than aluminium in Earth’s crust has to be indicated.
Concept Introduction:
Element is a pure substance and it cannot be broken down into simpler pure substance by chemical means like chemical reaction, electric current, heat, or light. Over several centuries, the discovery of 118 known elements and its isolation have taken place. These 118 elements are the building blocks of all matter. Out of the 118 elements, eighty-eight elements are naturally occurring and the other 30 elements are laboratory synthesized by bombarding elements that naturally occur with small particles.
Elements that are laboratory synthesized are radioactive in nature and they convert back into the original naturally occurring element by emission of radiation. All the elements that occur naturally are not evenly distributed on earth and universe.
Radiations that are emitted from stars can be used to estimate the elemental composition of universe. This indicates that hydrogen and helium are mostly dominant. On Earth’s crust oxygen and silicon are the two elements that account for about
(c)
Interpretation:
Whether calcium is more abundant or less abundant than magnesium in Earth’s crust has to be indicated.
Concept Introduction:
Element is a pure substance and it cannot be broken down into simpler pure substance by chemical means like chemical reaction, electric current, heat, or light. Over several centuries, the discovery of 118 known elements and its isolation have taken place. These 118 elements are the building blocks of all matter. Out of the 118 elements, eighty-eight elements are naturally occurring and the other 30 elements are laboratory synthesized by bombarding elements that naturally occur with small particles.
Elements that are laboratory synthesized are radioactive in nature and they convert back into the original naturally occurring element by emission of radiation. All the elements that occur naturally are not evenly distributed on earth and universe.
Radiations that are emitted from stars can be used to estimate the elemental composition of universe. This indicates that hydrogen and helium are mostly dominant. On Earth’s crust oxygen and silicon are the two elements that account for about
(d)
Interpretation:
Whether copper is more abundant or less abundant than sodium in Earth’s crust has to be indicated.
Concept Introduction:
Element is a pure substance and it cannot be broken down into simpler pure substance by chemical means like chemical reaction, electric current, heat, or light. Over several centuries, the discovery of 118 known elements and its isolation have taken place. These 118 elements are the building blocks of all matter. Out of the 118 elements, eighty-eight elements are naturally occurring and the other 30 elements are laboratory synthesized by bombarding elements that naturally occur with small particles.
Elements that are laboratory synthesized are radioactive in nature and they convert back into the original naturally occurring element by emission of radiation. All the elements that occur naturally are not evenly distributed on earth and universe.
Radiations that are emitted from stars can be used to estimate the elemental composition of universe. This indicates that hydrogen and helium are mostly dominant. On Earth’s crust oxygen and silicon are the two elements that account for about
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Chapter 1 Solutions
General, Organic, and Biological Chemistry Seventh Edition
- Nonearrow_forwardNonearrow_forwardWhat spectral features allow you to differentiate the product from the starting material? Use four separate paragraphs for each set of comparisons. You should have one paragraph each devoted to MS, HNMR, CNMR and IR. 2) For MS, the differing masses of molecular ions are a popular starting point. Including a unique fragmentation is important, too. 3) For HNMR, CNMR and IR state the peaks that are different and what makes them different (usually the presence or absence of certain groups). See if you can find two differences (in each set of IR, HNMR and CNMR spectra) due to the presence or absence of a functional group. Include peak locations. Alternatively, you can state a shift of a peak due to a change near a given functional group. Including peak locations for shifted peaks, as well as what these peaks are due to. Ideally, your focus should be on not just identifying the differences but explaining them in terms of functional group changes.arrow_forward
- Nonearrow_forwardNonearrow_forwardIn the solid state, oxalic acid occurs as a dihydrate with the formula H2C2O4 C+2H2O. Use this formula to calculate the formula weight of oxalic acid. Use the calculated formula weight and the number of moles (0.00504mol) of oxalic acid in each titrated unknown sample recorded in Table 6.4 to calculate the number of grams of pure oxalic acid dihydrate contained in each titrated unknown sample.arrow_forward
- 1. Consider a pair of elements with 2p and 4p valence orbitals (e.g., N and Se). Draw their (2p and 4p AO's) radial probability plots, and sketch their angular profiles. Then, consider these orbitals from the two atoms forming a homonuclear л-bond. Which element would have a stronger bond, and why? (4 points)arrow_forwardWrite the reaction and show the mechanism of the reaction. Include the mechanism for formation of the NO2+ 2. Explain, using resonance structures, why the meta isomer is formed. Draw possible resonance structures for ortho, meta and para.arrow_forwardNonearrow_forward
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