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Questions in chemistry

[Terjawab] Fill in the name and empirical formula of each ionic compound that could be formed from the ions in this table: | cation | anion | empirical formula | name of compound | |---|---|---|---| | $NH _4$ | $SO _4^{2-}$ | $\square$ | $\square$ | | $K ^{+}$ | $ClO ^{-}$ | $\square$ | $\square$ | | $K ^{+}$ | $ClO _4^{-}$ | $\square$ | $\square$

[Terjawab] Compare the total mass of the reactants to the total mass of the products. What choice demonstrates the Law of Conservation of Mass? A. [tex]$100 g Na _3 N \rightarrow 70 g Na +14 g N _2$[/tex] B. [tex]$40 g Ca +35 g O _2 \rightarrow 79 g CaO$[/tex] C. [tex]$115 g Sr ( OH )_2 \rightarrow 103 g SrO +18 g H _2 O$[/tex] D. [tex]$161 g ZnSO _4 \rightarrow 81 g ZnO ^{-80} g SO _3$[/tex]

[Terjawab] GF 32 CHENT M4 ASSESSMENT 6 QUESTION 16 Which one is the correct formula for a primary amine? QUESTION 17 What is the chemical name of the ester compound [tex]$CH _3 CH _2 CH _2 CH _2 COOCH _3$[/tex]? A. Methyl butanoate B. Methyl pentanoate C. Pentyl methanoate D. Methyl pentanoic acid QUESTION 18 The IUPAC name for the alcohol [tex]$CH _3 CH ( OH ) CH _2 CH ( CH _3) CH _3$[/tex] is A. 4-methyl-2-hexanol. B. 2-methylpentan-4-ol. C. 4-methylpentan-2-ol. D. 4-methyl-4-pentanol.

[Terjawab] The molar mass of silver, Ag, is $107.9 g / mol$. How many grams of silver are in 1.13 moles of Ag?

[Terjawab] Using the thermodynamic information in the ALEKS Data tab, calculate the standard reaction free energy of the following chemical reaction: [tex]$TiCl_4(g)+2 H_2 O(g) \rightarrow TiO_2(s)+4 HCl(g)$[/tex] Round your answer to zero decimal places.

[Terjawab] Which of these is an example of a physical property? A. Sodium ignites when placed in water. B. Iron combines with oxygen to rust. C. Sodium metal is soft and malleable.

[Terjawab] Which of the following can easily form an ionic bond with a cation? A. Sr B. Ne C. [tex]$NH _4{ }^{+}$[/tex] D. [tex]$PO _4{ }^{3-}$[/tex]

[Terjawab] Using the thermodynamic information in the ALEKS Data tab, calculate the standard reaction free energy of the following chemical reaction: [tex]$TiCl_4(g)+2 H_2 O(g) \rightarrow TiO_2(s)+4 HCl(g)$[/tex] Round your answer to zero decimal places.

[Terjawab] How many neutrons are in chlorine-35? 18 17 35

[Terjawab] The pH of a solution is: A. a description of the amount of sodium in medicines. B. a general prediction of how long it will take for a substance to cause a stomach ache. C. a measure of how fast it will denature a protein. D. a measure of how much acid it takes to destroy a buffer. E. a measure of the concentration of hydrogen ions it contains.