Chem Final

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Which of the following two atoms are isotopes

12 13 C and C 6 6

What is the sum of the coefficients when the following equation is balanced using the lowest whole numbered coefficients? 4 PH3(g) + 8O2(g) ➡️ 1 P4O10(s) + 6H2O(g)

19

A single sp3 orbital has...

2 lobes of unequal size

For a particular process that is carried out at constant pressure, q= 125 kj and w= -15 kj. Therefore... /\E= 125 kj + (-15 kj)= ?

/\E= 110 kj and /\H= 125 kj

For the reaction, 2 NH3(g) ➡️ N2(g) + 3 H2(g), one would expect...

/\H° to be positive and /\S° to be positive

A gas occupies 22.4 L at STP and 14.5 L at 100°C and 2.00 arm pressure. How many moles of gas did the system gain or lose?

0.05 moles lost

A::A represents

A double bond

In the reaction AgNO3(aq) + HI(aq) ➡️ AgI(s) + HNO3(aq) the spectator ions are

H+ and NO3-

Which is the most acceptable electron dot structure for N2H2?

H-Ñ=Ñ-H

Which of the following would be expected to have sp2 hybridization on atom A?

I, II, and III

Write the chemical formula for the following compounds: sodium hypochlorite, calcium sulfate, and strontium hydroxide

Sodium hypochlorite: NaClO Calcium sulfate: CaSO4 Strontium hydroxide: Sr(OH)2

Water has an unusually high...

Specific heat

What are the names of the ions Sn2+, Sb3+, and Te2-?

Tin (II), antimony, and telluride

What is the molecular geometry of AsCl3?

Trigonal pyramidal

The reaction HNO3(aq) + KOH(aq) → KNO3(aq) + H2O(l) is best classified as a(n)

acid-base neutralization reaction

Molarity is defined as

moles of solute per liter of solution

Order the four metric prefixes from smallest to largest

nano- < milli- < centi- < kilo-

What are the chemical symbols for TIN and GOLD

Sn; Au

The volume of 350 mL of gas at 25°C is decreased to 125 mL at a constant pressure, what is the final temperature of the gas?

-167°C *only negative number*

How many electrons are in the ion, CO3^2-

32

How many protons, electrons, and neutrons are in an atom of 90 Sr 38

38 p, 38 e, 52 n

All of the following are non metals except

Antimony

Based on the VSEPR theory, which should have the smallest XAX bond angle?

C

What is the molecular or chemical formula for butyric acid?

C4H8O2

Which molecule contains the most polar bonds?

CF4

The major source of Cl atoms in the stratosphere is from...

CFC's

Which of the following contains an atom that does NOT obey the octet rule?

CIF3

The principal cause of man-made ozone depletion in the stratosphere is due to...

Cl

Arrange the ions N3-, O2-, Mg2+, Na+, and F- in order of increasing ionic radius, starting with the smallest first

Mg2+, Na+, F-, O2-, N3-

Arrange the following spectral regions in order of increasing energy: infrared, microwave, ultraviolet, visible

Microwave< infrared< visible< ultraviolet

Which of the following have the same number of valence electrons?

N, As, Bi

Which bond should have the highest bond dissociation energy?

N=-N

The solid compound, NaHCO3, contains

Na2+ and CO3^2-

Know all ball-and-stick molecular model

O1= sp2 O2= sp3 C1= sp3 C2 = sp3 C3= sp2

Which of the following should be nonlinear?

Only II

Which of the following equations represents "Boyle's Law"

PV= k

A balanced net ionic equation for the reaction of Pb(NO3)2(aq) with NaI(aq)

Pb2+(aq) + 2 I-(aq) ➡️ PbI2(s) *shortest equation*

The ions ClO4-, ClO3-, ClO2-, and ClO- are named respectively

Perchlorate, chlorite, chlorite, and hypochlorite

As part of the calibration of a new laboratory balance, a 1.000-g mass is weighed with the following results: Trial Mass 1 1.201+-0.001 2 1.202+-0.001 3 1.200+-0.001 The Balance is:

Precise but in accurate


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