VincenTragosta - Tanya, Jawab, dan Belajar Tanpa Batas Logo

Questions in chemistry

[Terjawab] A student was comparing the solubility of equal amounts of table salt and table sugar at different temperatures. The table below shows the four samples that the student used and the temperature of the water that they were dissolved in. | Sample | Name | Chemical formula | Temperature of water (${}^{\circ}C$) | | ------ | ----------- | ---------------- | ---------------------------------------- | | 1 | Table sugar | $C_{12}H_{22}O_{11}$ | 80 | | 2 | Table sugar | $C_{12}H_{22}O_{11}$ | 45 | | 3 | Table salt | NaCl | 55 | | 4 | Table salt | NaCl | 63 | Which of the samples most likely had the highest solubility? A. 1 B. 2 C. 3 D. 4

[Terjawab] Q5. Two beakers, A and B, each contain a 100 ml solution of sodium hydroxide and water. Beaker A contains 35 g of sodium hydroxide, and Beaker B contains 50 g of sodium hydroxide. In which beaker is the base solution more dilute? Explain.

[Terjawab] What is the hybridization of the central atom in the sulfur trifluoride (SF3^-) anion?

[Terjawab] What is the equilibrium constant for the reaction N2(g) + O2(g) = 2NO(g)?

[Terjawab] Why are cooking utensils usually made of metals?

[Terjawab] Which shows the electron configuration for Silicon (Si)? (A) [Ar]4s 2 3d 10 4p 4 (B) [Ar]3d 1 4s 2 (C) [Ne]3s 2 3p 4 (D) [Ne]3s 2 3p 2

[Terjawab] Carmen is heating some water and trying to measure the temperature of water using a Celsius thermometer. Which measurement can she expect once the water begins to boil? A. $32^{\circ} C$ B. $100^{\circ} C$ C. $212^{\circ} C$ D. $373^{\circ} C$

[Terjawab] $\Al ( NO _3)_3(aq)$ and $Na _3 PO _4(aq)$ $\xrightarrow[\text { Molecular Equation }]{ Al _{\left( NO _3\right)_3( aq )}+ AlPO _4 \quad Na }$ Complete Ionic Equation Net Ionic Equation Spectator Ions

[Terjawab] The combustion of glucose, [tex]$C _6 H _{12} O _6(s)$[/tex], produces carbon dioxide, [tex]$CO _2(g)$[/tex], and water, [tex]$H _2 O ( g )$[/tex], according to the equation below. [tex]$C_6 H_{12} O_6(s)+6 O_2(g) \rightarrow 6 CO_2(g)+6 H_2 O(l)$[/tex] The enthalpy of the reaction is -2,840 kJ. What is the heat of combustion, per mole, of glucose? A. -2,840 kJ / mol B. -473.3 kJ / mol C. 473.3 kJ / mol D. 2,840 kJ / mol

[Terjawab] A student was comparing the solubility of equal amounts of table salt and table sugar at different temperatures. The table below shows the four samples that the student used and the temperature of the water that they were dissolved in. | Sample | Name | Chemical formula | Temperature of water (${ }^{\circ} C$ ) | | ------ | ----------- | ---------------- | ----------------------------------------- | | 1 | Table sugar | $C_{12}H_{22}O_{11}$ | 80 | | 2 | Table sugar | $C_{12}H_{22}O_{11}$ | 45 | | 3 | Table salt | NaCl | 55 | | 4 | Table salt | NaCl | 63 | Which of the samples most likely had the highest solubility? 1. 1 2. 2 3. 3 4. 4