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Answer: B
Reason Hydrogen bonds are the strongest bonds. Bonding fluorine and hydrogen will be the greatest degree of polarity than carbon, nitrogen, and oxygen.

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Adrian Garcia (b) #10
The answer is D because it’s an exothermic reaction, so the bond is being formed.

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Geovannie Dorsey (d) #8
Answer: B- copper
Because copper is a metal and is the the only answer choice that is a metal.

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The answer is B.
The reason is because you have to divide 220 by 44 to get the moles.

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The answer is A. This is the only choice out of all the choices that is a chemical property.

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Answer: A
Reason an ideal gases motion is random, straight, and has no attraction

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Adrian Garcia (b) #25
The answer is D because Si is neither a metal nor a nonmetal.

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Answer: A- Atomic number

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Answer is D because  ion add or remove electrons from an atom

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The answer is B. This is the only choice out of all the choices which shows a solid phase.

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Answer: C
Reason a chemical reaction occurs when reactant particles collide with proper energy and proper orientat

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Adrian Garcia (b) #5
The answer is C because Le Chatelier’s principle describes what happens when stress is placed on the equilibrium system.

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the answer is C

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The answer is D. This is the biggest group so it has the biggest electronegativity.

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Answer: B
Reason Systems by nature tend to undergo changes toward higher entropy (disorder) and lower energy since this is the state where they are most stable

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Adrian Garcia (b) #12
The answer is A because electronegativity is 0.5, which is less than the other electronegativities.

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Answer is A its the definition

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The answer is C. This is since table H on the reference table shows the answer when propanone at 50 c.

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Answer: C
Reason melting is a chemical property of iron that can be visually seen

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Adrian Garcia (b) #14
The answer is B because:

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Answer is C because the second electron shell was filled before going to the third

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The answer is C. CH4 is symmetrical and the molecule is polar.

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Answer:

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Adrian Garcia (b) #4
The answer is C because it’s a spontaneous reaction.

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the Answer is B because the Activated complex has the same oreintation

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The answer is A. This is since gases move in random straight lines with no attractive forces which is ideal gas parties.

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Brian Bacuilima (c)#9
The answer is: 10 neutrons, 22 neutrons

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Adrian Garcia (b) #7
The answer is C because one of the electrons in this configuration jumped to a higher level.

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The answer is C.
The reason is because gas is disorderly and that what happens when things have entropy

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The golf foil experiment concluded that the atom was mostly empty space, and it had a positively charged nucleus.

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Brian Bacuilima (c)# 10
The answer is D.

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Adrian Garcia (b) #16
The answer is D because Zn is more reactive than Ni.

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Answer is C because using the heat formula

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The answer is A. This is since Hg melting point is 234 k.

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Brian Bacuilima (c)#14
The answer is C.

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Adrian Garcia (b) #19
The rates of the forward and reverse reactions are always equal.

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The answer is B.
The reason is because proton and neutron both has 1 amu.

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valence electrons are the farthest electrons, thus, they are found in the outermost shell.

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Brian Bacuilima (c)#21
The answer is B.

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Adrian Garcia (b) #15
The answer is B because it’s in the correct orientation.

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The answer is

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Electrons are found in orbitals, around the nucleus.

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Brian Bacuilima (c)#2
The answer is B.

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Adrian Garcia (b) #13
The answer is C because:

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C because it requires less energy

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The answer is C. This is since when a electron is releases energy from low to high state of energy you can see the energy.

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Brian Bacuilima (c)#13
The answer is C.

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Adrian Garcia (b) #21
The answer is D because Xe has the same amount of protons and electrons.

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The answer is A.
The reason is because when you draw the lewis dot structure, it is asymmetrical.

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from left to right on the periodic table, atomic number increases.

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Brian Bacuilima (c)#18
The answer is A.

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Adrian Garcia (b) #3
The answer is B because hydrogen bonds with oxygen, so it’ll have a high boiling point.

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The answer is C,
The reason is because you have to put part over whole then times it by 100 to find percent composition.

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the only 2 chemical formulas available are the empirical and molecular.

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Brian Bacuilima (c)#22
The answer is B.

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The answer is c because entropy is disorder and things in nature tend to go toward disorder because it requires low energy so things in nature tend to go towards higher entropy and lower energy.

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The answer is C.
The reason is because when you look at it in rows, it increases from left to right.

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H2 becomes 2 individual H's by absorbing energy.

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Brian Bacuilima (c)#1
The answer is D.

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The answer is c.) 2-5-1 because the second shell is not fully filled and there is an electron in the third shell. This means that an electron in the second shell jumped to a higher state (excited state).

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The answer is D.
The reason is because when bonds are broken, energy is being released and in order to make new bond energy has to be absorbed.

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C represents carbon, which is an element, and elements cannot be decomposed.

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Brian Bacuilima (c)#19
The answer is B.

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The answer is D.) Synthesis because H2 and O2 are being combined to make H2O.

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The answer is B.
The reason is because they are part of the energy system.

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when an ice cube at 0 degrees Celsius is placed in a beaker of water at 50 degrees Celsius, thermal energy is transferred.

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Brian Bacuilima (c)#17
The answer is A.

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The answer is D.) Zn(s) because it is the most active metal out of the choices (table J was used).

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The answer would be A.
The reason is because this equation requires the heat of fusion to be used.

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if 2 substances have the same volume, then their molecules must also be equal.

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Brian Bacuilima (c)#11
The answer is B.

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The rate of the forward and reverse reaction will be constant when dynamic equilibrium is reached because dynamic equilibrium in chemistry reactions is about being constant.

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Ne-20 = 10
Ne-22=12 .
The reason is because you take the isotope and minus it by the atomic number.

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this is an endothermic physical change because in order to go from a solid to a gas, it must absorb heat.

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Brian Bacuilima (c)#23
The answer is A.

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The answer is C because LeChatelier's principle is used to predict what happens when stress is placed in a react

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The answer is B.
The reason is because they both are compounds but the properties do not relate due to one being water and the other not.

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A catalyst can speed up an activation energy that is low to make it fast.

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Answer is

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The answer is A.) HI because the polarity of HI is 0.5 which is the lowest number needed for a bond to be polar.

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The answer is D.
The reason is because ideal gasses like high temperature but low pressure.

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The reaction on the reaction is single replacement because only Cl and NO3 replace each other once.

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Answer is

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The answer is B because...

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Iron(II)Oxide is FeO because when you get the 2 oxidation states of each one, the states are 2+ and 2-, and when you bring them down they lose their signs, and since the numbers are also equal, they cancel out, thus becoming FeO

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Answer is C
Reason: In terms of entropy and energy, systems in nature tend to undergo changes toward higher entropy and lower energy since that's when they're more stable.

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The answer is D.) Si because Si lands within the metalloid group in the periodic table.

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Answer is B because they are the valence electrons

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The answer is D. This is because they share the same temperature,Pressure, and volume.

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Answer is

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The answer is B because out of all the intermolecular forces hydrogen bonding is the strongest and it can only occur with Nitrogen, Oxygen, and Flourine. During boiling the bonds have to break and more energy is required to break a hydrogen bond so more energy required to break a bond means higher boiling point.

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the Answer is B because isotopes

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The answer is A. This is since No2 needs to be positive and they ask for only 1 mole so you must divide 66.4/2 to get +33.2

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Answer is

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The answer is choice C.