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Questions in chemistry

[Answered] Name the following groups: | | | | :---------- | :--------------- | | [tex]$CH_3-$[/tex] | Amine | | [tex]$CH_3CH_2CH_2CH_2CH_2-$[/tex] | Hydroxyl group | | | Methyl group |

[Answered] Consider the equations below. (1) $Ca ( s )+ CO _2(g)+\frac{1}{2} O _2(g) \rightarrow CaCO _3(s)$ (2) $2 Ca ( s )+ O _2(g) \rightarrow 2 CaO ( s )$ How should you manipulate these equations so that they produce the equation below when added? Check all that apply. $CaO(s)+CO_2(g) \rightarrow CaCO_3(s)$ A. Reverse the direction of equation (2) B. Multiply equation (1) by 3 C. Multiply equation (2) by $1 / 2$

[Answered] The elements on the current periodic table are placed in order of increasing... a) density b) atomic number c) boiling point d) atomic mass

[Answered] "Metals are good conductors of electricity" is an example of a A. hypothesis B. theory C. law D. qualitative observation E. quantitative observation

[Answered] What could the fourth quantum number of a $3 p^3$ electron be? A. $m_s=+1$ B. $m_s=0$ C. $m_s=-\frac{1}{2}$ D. $m_s=-1

[Answered] If lime juice has a pH of 1.7, what is the concentration of hydrogen ions (in [tex]$mol / L$[/tex]) in lime juice, to the nearest hundredth? Use the formula [tex]$pH=-\log [H+]$[/tex].

[Answered] Which atom in the ground state contains only one completely filled p orbital? (1) Ne (2) O (3) He (4) Be

[Answered] What is the third quantum number of a $3 s^2$ electron in phosphorus, $1 s^2 2 s^2 2 p^6 3 s^2 3 p^3$? A. $m_l=0$ B. $m_l=2$ C. $m_l=1$ D. $m_l=3

[Answered] Select the correct answer. How many moles of $O _2$ are required to generate 18 moles of $H _2 O$ in the given reaction? $2 C_8 H_{18}+25 O_2 \rightarrow 16 CO_2+18 H_2 O$ A. 2 moles B. 12 moles C. 16 moles D. 18 moles E. 25 moles

[Answered] Refine this sentence: It is essential for coating the inoculating loop with LiCl solution, necessary for observing the specific color changes in the flame caused by LiCl.