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Questions in chemistry

📝 Answered - Draw the structure for the most stable chair conformation of trans-1-bromo-4-isopropylcyclohexane. Use the cyclohexane conformation drawing tool and guide points to draw each structure.

📝 Answered - Complete each nuclear reaction. ${ }_2^2 H+{ }_2^2 H \rightarrow{ }_2 He+{ }_0^1 n$ ${ }_{92}^{238} U \rightarrow{ }^{F} Th+{ }_2^8 He$ D: $\square$ F: $\square$ E: $\square$ G: $\square$

📝 Answered - What is revealed in the reaction $Ca ( OH )_2(s) \rightarrow Ca ^{2+}(a q)+2 OH ^{-}(a q)$. $\Delta H=-16.71$? A. The reaction produces heat. B. Heat is one of the reactants. C. The reaction is endothermic. D. The reaction occurs slowly.

📝 Answered - When a solution of formaldehyde and KOH is heated, it will give: (a) acetylene and methane (b) methanol and potassium formate (c) methanol and methane (d) methanol and acetylene

📝 Answered - Water forms according to the equation below [tex]2 H_2(g)+O_2(g) \rightarrow 2 H_2 O(g) \quad \Delta H_{(x n}=183.64 kJ[/tex] How much energy is released during the formation of [tex]1 mol H _2 O ( g )[/tex]?

📝 Answered - DIRECTION: Copy and answer, Complete the table below. Item 1 is given as an example "Household States of Matter - Scavenger Hunt" | Place | Name of Matter | Classification | Characteristics | |---|---|---|---| | Kitchen | water | liquid | water takes the shape of the glass and flows | | Kitchen | | | | | Kitchen | | | | | Bathroom | | | | | Bathroom | | | | | Bathroom | | | | | Living Room | | | | | Living Room | | | | | Living Room | | | | | Garage or Garden | | | | | Garage or Garden | | | | | Garage or Garden | | | | Answer the following questions: 1. Can you share an item you found from the scavenger hunt and explain why you classified it as a solid, liquid, or gas? 2. Were there any items that were difficult to classify? Why do you think that was? 3. How does understanding the states of matter help us interact with objects in our home environment?

📝 Answered - 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

📝 Answered - 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.

📝 Answered - What is the hybridization of the central atom in the sulfur trifluoride (SF3^-) anion?

📝 Answered - What is the equilibrium constant for the reaction N2(g) + O2(g) = 2NO(g)?