VincenTragosta - Tanya, Jawab, dan Belajar Tanpa Batas Logo

Questions in chemistry

[Terjawab] Write the empirical formula of at least four binary ionic compounds that could be formed from the following ions: [tex]$Ca^{2+}, Pb^{4+}, I^{-}, O^{2-}$[/tex]

[Terjawab] Given the following equilibrium system, what will occur if the system is subjected to an increase in temperature? [tex]CuCl_4^{2-}(a q) green \rightleftharpoons Cu^{2+}+(a q) blue+4 Cl^{1-}(a q)+ energy[/tex] A. Keq will decrease B. The solution will turn more blue C. The solution will shift right D. Nothing will change

[Terjawab] A physical chemist measures the temperature [tex]$T$[/tex] inside a vacuum chamber. Here is the result: [tex]$T=-19 .{ }^{\circ} C$[/tex] Convert [tex]$T$[/tex] to SI units. Round your answer to 3 significant figures.

[Terjawab] What is the name for the $H _3 O ^{+}$ ion? A. hydrogen trioxide B. trihydroxide C. hydronium

[Terjawab] An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

[Terjawab] Fill in the gaps to balance the equation. Use the smallest set of whole numbers to balance the equation and include coefficients of "1" when appropriate. $\square$ $NaNO _3+$ $\square$ 1 $Cr _2\left( CO _3\right)_3 \rightarrow$ $\square$ 3 $Na_2 CO_3+$ $\square$ 2 $Cr \left( NO _3\right)_3$ Complete the table to determine how many atoms of each element are present in the reactants and products. | Element | Reactant | Products | |---|---|---| | Na | | | | N | | | | O | | | | Cr | 2 | 2 | | C | | |

[Terjawab] Given the following equilibrium system, what will occur if the system is subjected to an increase in temperature? [tex]CuCl_4^{2-}(a q) g r e e n \rightleftharpoons Cu^{2+}+(a q) b l u e+4 Cl^{1-}(a q)+e n e r g y[/tex] A. Keq will decrease B. the solution will turn more blue C. the solution will shift right D. nothing will change

[Terjawab] Alguien puede traducirlo?: What's the fastest animal in the world?

[Terjawab] Fill in the gaps to balance the equation. Use the smallest set of whole numbers to balance the equation and include coefficients of "1" when appropriate. [tex]$\square$ C _6 H _{13} COOH + $\square$ O _2 \rightarrow $\square$ CO _2+ $\square$ H _2 O[/tex] Complete the table to determine how many atoms of each element are present in the reactants and products. | Element | Reactant | Products | |---|---|---| | C | | | | H | | | | O | | |

[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