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Questions in chemistry

[Terjawab] Drag the tiles to the correct locations. Each tile can be used more than once, but not all tiles will be used. Some locations will remain empty. Chloramine has the chemical formula $NH _2 Cl$. Nitrogen has five valence electrons, each hydrogen has one valence electron, and chlorine has seven valence electrons. Complete the Lewis structure for this covalent compound. $NH - I$ = 三

[Terjawab] Which of the following is an example of a conjugate acid-base pair? A. $H _2 S$ and $HS ^{-}$ B. $NO _2$ and $NO _2^{-}$ C. HCl and HBr D. HF and $H ^{+}$

[Terjawab] Examine the effects of eutrophication.

[Terjawab] The following table lists the boiling points of compounds of similar structures. Explain the general trend, and explain the cause of the trend.

[Terjawab] How many significant figures are in 10.65922?

[Terjawab] Practicing Using Dalton's Law of Partial Pressures Four gases were combined in a gas cylinder with these partial pressures: 3.5 atm N2, [tex]2.8 atm O 2,0.25[/tex] atm Ar , and 0.15 atm He . What is the total pressure inside the cylinder?

[Terjawab] Examine the effects of eutrophication.

[Terjawab] Can alguien translate it?: What's the fastest animal in the world?

[Terjawab] Select the correct answer. What is the correct mathematical relationship between the number of moles, the volume, and the standard molar volume of a substance? A. number of moles = volume - standard molar volume B. number of moles = volume x standard molar volume C. number of moles = volume / standard molar volume D. number of moles = standard molar volume / volume

[Terjawab] Which of the following is an example of a Brønsted-Lowry base? A. HCl B. [tex]H _3 O ^{+}[/tex] C. [tex]NH _3[/tex] D. [tex]NH _4{}^{+}[/tex]