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Questions in chemistry

[Terjawab] Consider these two statements regarding the equation [tex]$PCl _5(g) \rightleftharpoons PCl _3+ Cl _2+$[/tex] heat: Statement 1: Adding heat to this reaction mixture would increase the reverse reaction. Statement 2: Cooling this reaction mixture would increase the forward reaction. A. Statements 1 and 2 are both true. B. Statement 1 is true, and statement 2 is false. C. Statements 1 and 2 are both false. D. Statement 1 is false, and statement 2 is true.

[Terjawab] Which row describes the changes to the atoms when a metal and a non-metal react together? | | Metal atoms | Non-metal atoms | |---|---------------------------------|-----------------------------------| | A | Gain electrons to form anions | Lose electrons to form cations | | B | Gain electrons to form cations | Lose electrons to form anions | | C | Lose electrons to form anions | Gain electrons to form cations | | D | Lose electrons to form cations | Gain electrons to form anions

[Terjawab] Consider the following equation in chemical equilibrium: [tex]$C_2 H_4(g)+H_2(g) \Leftrightarrow C_2 H_6(g)+137 kJ$[/tex] What happens to the amount of ethane ([tex]$C_2 H_6$[/tex]) when the temperature of the system is increased? A. The amount of ethane decreases. B. The amount of ethane increases initially and then decreases. C. The amount of ethane increases. D. The amount of ethane decreases initially and then increases.

[Terjawab] Who built the first atomic bomb?

[Terjawab] Which element is rolled into a foil found and used in your kitchen?

[Terjawab] If 13.0 g of CO\(_2\) gas has a volume of 0.46 L at 310 K, what is its pressure in millimeters of mercury?

[Terjawab] Which element has the lowest ionization energy? A. Argon (Ar) B. Bromine (Br) C. Cesium (Cs) D. Nickel (Ni)

[Terjawab] What is the charge of the nucleus of an oxygen atom?

[Terjawab] Write the balanced equation for the neutralization reaction between [tex]HI[/tex] and [tex]Ba(OH)_2[/tex] in aqueous solution. Include physical states.

[Terjawab] Which of the following most likely requires intermolecular forces? A. a spider walking on the bottom of a leaf B. a rock maintaining its solid shape C. a koala using claws to hold onto a tree