VincenTragosta - Tanya, Jawab, dan Belajar Tanpa Batas Logo

Questions in chemistry

[Terjawab] Which proportionality applies to Avogadro's law? [tex]$V \propto \frac{1}{P}$[/tex] [tex]$V \propto T$[/tex] [tex]$P \propto T$[/tex] [tex]$V \propto n$[/tex]

[Terjawab] What volume of a $0.100 M \text{AgNO}_3$ solution is required to completely react with the $\text{CaCl}_2$ in 3.00 L of a $0.100 M \text{CaCl}_2$ solution? The balanced chemical equation is: $2 \text{AgNO}_3 + \text{CaCl}_2 \rightarrow 2 \text{AgCl} + \text{Ca(NO}_3)_2$

[Terjawab] Which of the following reactions shows that the formation of $CO _2$ releases $393.5 kJ / mol$? A. $C (s)+ O _2(g) \rightarrow CO _2(g)+393.5 kJ$ B. $C ( s )+ O _2(g)+393.5 kJ \rightarrow CO _2(g)$ C. $C (s)+2 O (g)+393.5 kJ \rightarrow CO _2(g)$ D. $C (s)+ O (g) \rightarrow CO _2(g)+393.5 kJ$

[Terjawab] What is the equilibrium constant for the reaction $N _2(g)+ O _2(g)=2 NO (g)$? A. $K _{ eq }=\frac{[ NO ]}{\left| N _2\right| O _2 \mid}$ B. $K _{24}=\frac{29 MOI }{ N _2\left| O _2\right|}$ C. $K_{eq}=\frac{\left( NO ^2\right.}{ N _2 IO _2 I }$ D. $K_{eq}=\frac{ xMOI ^{+}}{ N _2 \uparrow\left| O _2\right|}$

[Terjawab] Common Polyatomic Ions | Chemical Name | Chemical Formula | Chemical Name | |---|---|---| | acetate | [tex]$C _2 H _3 O _2^{-}$[/tex] | nitrite | [tex]$NO _2^{-}$[/tex] | | carbonate | [tex]$CO _3^{2-}$[/tex] | ammonium | [tex]$NH _4^{+}$[/tex] | | hypocarbonite | [tex]$CO ^{2-}$[/tex] | cyanide | [tex]$CN ^{-}$[/tex] | | hydrogen carbonate (bicarbonate) | [tex]$HCO _3^{-}$[/tex] | hydroxide | [tex]$OH ^{-}$[/tex] | | chlorite | [tex]$ClO _2^{-}$[/tex] | peroxide | [tex]$O _2^{2-}$[/tex] | Type the correct answer in the box. Express your answer to three significant figures. This balanced equation shows the reaction of sodium hydroxide and sulfuric acid: [tex]$2 NaOH + H _2 SO _4 \rightarrow Na _2 SO _4+2 H _2 O$[/tex]. In a laboratory experiment, a student mixes 355 grams of sulfuric acid with an excess of sodium hydroxide. What is the theoretical mass of sodium sulfate produced? Refer to the periodic table and the polyatomic ion resource. The theoretical mass of sodium sulfate is $\square$ grams.

[Terjawab] Aluminate ion is a: 1) Positive radical 2) Negative radical 3) Negative element 4) Positive element

[Terjawab] What is a vapor? A. A substance that has a much higher melting point and boiling point than other similar substances B. A substance that is always in the solid or liquid phase at room temperature C. A substance that is in the gas phase at a temperature at which it would normally be a solid or liquid D. A substance that forms a gas, but only at very high temperatures

[Terjawab] What is the temperature of 0.750 mol of a gas stored in a [tex]$6,850 mL$[/tex] cylinder at 2.21 atm? Use [tex]$P V=n R T$[/tex] and [tex]$R=0.0821 \frac{L \bullet \text { atrm }}{ mol \bullet K }$[/tex]. A. 2.95 K B. 5.24 K C. 138 K D. 246 K

[Terjawab] If a silver nitrate solution is added to excess sodium sulfide, this reaction takes place: [tex]2 AgNO_3(a q)+Na_2 S(a q) \rightarrow Ag_2 S(s)+2 NaNO_3(a q)[/tex] Suppose you use 0.0150 liter of a 2.50 M solution of silver nitrate. Assuming the reaction goes to completion, how much silver sulfide is produced? Use the periodic table. A. [tex]1.49 g[/tex] B. 4.55 g C. 9.30 g

[Terjawab] Ph-CH(Br)-CH(Br)-Ph -> Zn/CH3OH