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Questions in chemistry

[Done] QUESTION 13 The correct name for the compound below is A. ethylpropanoate B. propylethanoate C. propylpropanone D. methylpropanoate QUESTION 14 Which of the following is a structural formula of a ketone compound? A. B. C. D. QUESTION 15 Which one of the following is not balanced for a hydrocarbon compound? | | 2C₂H₆ | + | 7O₂ | → | 4CO₂ | + | 6H₂O | |---|-------|---|-----|---|------|---|------| | | 2C₃H₈ | + | 7O₂ | → | 4CO₂ | + | 4H₂O | | | C₄H₈ | + | 4O₂ | → | 10CO₂| + | 11H₂O| | | 2C₁H₂₂ | + | 21O₂| → | | + | |

[Done] 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.

[Done] What is the average atomic mass of the element in the data table? | Mass (amu) | Abundance (%) | |---|---| | 10.0 | 19.9 | | 11.0 | 80.1 | A. 21.0 amu B. 41.2 amu C. 10.8 amu D. 35.5 amu

[Done] If given the following scenario: The half-life of Sodium-24 is 15 hours. If you start with 600 grams of sodium-24 how much would be left after 4 days? Which of the following equations could you use to solve for the amount of grams left after 4 days? [tex]$A=600\left(\frac{1}{2}\right)^{\frac{15}{4}}$[/tex] [tex]$A=600\left(\frac{1}{2}\right)^4$[/tex] [tex]$A=600\left(\frac{1}{2}\right)^{\frac{4}{15}}$[/tex] [tex]$A=600\left(\frac{1}{2}\right)^{\frac{96}{15}}$[/tex]

[Done] What choice demonstrates the Law of Conservation of Mass? [tex]194 g HNO _3 \rightarrow 180 g NO _2+32 gO _2+36 g H _2 O[/tex] [tex]110 g Ag _2 O \rightarrow 107 g Ag +32 g O _2[/tex] [tex]98 g CaCO _3 \rightarrow 56 g CaO ^{+} 44 g CO _2[/tex] [tex]30 g LiO _2+44 g CO _2 \rightarrow 74 g LiCO _3[/tex]

[Done] Which statement is true about ionic compounds? A. They are made up of many large molecules that are bonded together. B. They are made up of atoms of only one type of element. C. They are made up of particles that are arranged in a repeating pattern. D. They are made up of a random ratio of elements that are bonded together.

[Done] 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 | |---|---|---|---| | $NH _4$ | $SO _4^{2-}$ | $\square$ | $\square$ | | $K ^{+}$ | $ClO ^{-}$ | $\square$ | $\square$ | | $K ^{+}$ | $ClO _4^{-}$ | $\square$ | $\square$

[Done] 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]

[Done] 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.

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