19. How many milliliters of isopropyl alcohol would you use to prepare 870mL of a 20% (v/v) solution of isopropy alcohol?

13. Given the reaction: $Mg+2HCl\rightarrow MgCl_{2}+H_{2}$ What is the total number of grams of Mg consumed when 0.5mole of H2 is produced? 6.09 12g 3.0g 24g

10. Salt dissolved in water is classified as a: Pure substance Heterogeneous mixture Homogeneous mixture Compound

3. If 0.60 moles of iron sulfide react with 1.20 moles of oxygen, which is the limiting reactant? $4FeS+9O_{2}\rightarrow 2Fe_{2}O_{3}+4SO_{3}$

2. What is the gram-molecular mass of the compound with the formula $CH_{3}COOH$ 22.4g 44.09 48.09 60.09

1. What is the mass of 1.00 mole of f 02 gas? $O_{2}$

6. What trend in atomic radius occurs across a period on the periodic table? What causes this trend?

What is the charge of an iron atom with 24 electrons? $-2$ $+24$ $-24$ $+2$

Which example is an exothermic reaction? melting ice condensation dissolving ammonium nitrate in water to cool the water dissolving sugar in water

Which of the following is not a synthesis reaction? a $Mg+2HCl\rightarrow MgCl_{2}+H_{2}$ b $2CO+O_{2}\rightarrow 2CO_{2}$ C $3H_{2}+N_{2}\rightarrow 2NH_{3}$ d $2H_{2}+O_{2}\rightarrow 2H_{2}O$

6. Given the reaction: $Ca+2H_{2}O\rightarrow Ca(OH)_{2}+H_{2}$ How many moles of $H_{2}O$ are needed to exactly react with 2.0 moles of Ca? 1.0 mol 20 mol 0.5 mol 4.0 mol