Questions in Grade College

Questions in Grade College

[Jawaban] A molecule with a single covalent bond is A. $SiSe _2$ B. $Cl _2$ C. $CO _2$ D. $N _2$

[Jawaban] In a chemical equation, which symbol should be used to indicate that a substance is in solution? (1) (aq)

[Jawaban] Which emergency drill is most useful when planning for a tornado? A. Put on dry clothes, then evacuate outdoors B. Locate safe shelter, then check for injuries C. Evacuate outdoors, then check for injuries D. Stop, drop, and roll, then find safe shelter

[Jawaban] What is news? News can be defined in three different ways: 1. 2. 3.

[Jawaban] Explanations regarding treatments for sepsis should be given to the patient, even if their mental status is compromised. A. True B. False

[Jawaban] Write a story to illustrate the saying: A good name is better than riches.

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

[Jawaban] Find the exact values of the following: (a) [tex]$\cos (\arctan (-10))$[/tex] (b) [tex]$\cos \left(\arcsin \left(\frac{-8}{17}\right)\right.[/tex]

[Jawaban] Point $P$ partitions the directed segment from $A$ to $B$ into a $1: 3$ ratio. $Q$ partitions the directed segment from $B$ to $A$ into a $1: 3$ ratio. Are $P$ and $Q$ the same point? Why or why not? A. Yes, they both partition the segment into a $1: 3$ ratio. B. Yes, they are both $\frac{1}{4}$ the distance from one endpoint to the other. C. No, $P$ is $\frac{1}{4}$ the distance from $A$ to $B$, and $Q$ is $\frac{1}{4}$ the distance from $B$ to $A$. D. No, Q is closer to A and P is closer to B.

[Jawaban] Write the equilibrium expression for the autoionization of water. [tex]K _{ w }=\left[ H _3 O ^{+}\right][ OH ] /\left[ H _2 O \right]^2[/tex] [tex]K _{ w }=\left[ H _2 O \right]^2 /\left[ H _3 O ^{+}\right]\left[ OH ^{-}\right][/tex] [tex]K _{ w }=\left[ H _3 O ^{+}\right]\left[ OH ^{-}\right][/tex]