Search found 61 matches

by Eva Zhao 4I
Mon Jan 13, 2020 10:48 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Partial Pressure to Concentration
Replies: 3
Views: 55

Re: Partial Pressure to Concentration

Just to add on, when using PV=nRT, you can rearrange the formula as such: P=(n/V)RT. (n/V) then represents the concentration, mol/L, and using the constant R and the given temperature, you can convert between partial pressure and concentration.
by Eva Zhao 4I
Mon Jan 13, 2020 8:47 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Equilibrium constants
Replies: 4
Views: 515

Re: Equilibrium constants

Solids have an essentially constant concentration because they are practically incompressible. As a result, it takes enormous pressure to cause even a tiny reduction in volume. As such, solids can be excluded from the equilibrium constant.
by Eva Zhao 4I
Mon Jan 13, 2020 8:43 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: solids and liquids
Replies: 6
Views: 22

Re: solids and liquids

Liquids and solids have an essentially constant concentration because they are practically incompressible. As a result, it takes enormous pressure to cause even a tiny reduction in volume. As such liquids and solids can be excluded from the equilibrium constant.
by Eva Zhao 4I
Mon Jan 13, 2020 8:38 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Q
Replies: 10
Views: 22

Re: Q

Q expresses the relative ratio of products to reactants at a given instant not necessarily at equilibrium. This is mainly useful to compare to K in order to determine the direction of the reaction. When Q=K, the system is at equilibrium.
by Eva Zhao 4I
Mon Jan 13, 2020 8:29 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Calculating K
Replies: 5
Views: 18

Re: Calculating K

Liquids and solids have an essentially constant concentration because they are practically incompressible. As a result, it takes enormous pressure to cause even a tiny reduction in volume. As such liquids and solids can be excluded from the equilibrium constant.
by Eva Zhao 4I
Thu Jan 09, 2020 9:40 pm
Forum: Ideal Gases
Topic: Difference between K and Q
Replies: 9
Views: 28

Re: Difference between K and Q

To add on, since Q expresses the relative ratio of products to reactants at a given instant not necessarily at equilibrium, you know the reaction shifts right if Q<K and shifts left if Q>K.
by Eva Zhao 4I
Thu Jan 09, 2020 9:29 pm
Forum: Ideal Gases
Topic: pressure [ENDORSED]
Replies: 13
Views: 189

Re: pressure [ENDORSED]

Yes, by PV=nRT, pressure (P) can be increased by increasing the temperature (T) or increasing the moles (n) of the substance involved (assuming no other variables are changed for simplicity's sake).
by Eva Zhao 4I
Thu Jan 09, 2020 9:25 pm
Forum: Ideal Gases
Topic: Ideal Gases
Replies: 7
Views: 106

Re: Ideal Gases

As others have mentioned, an ideal gas is theoretical. Most gases do behave closer to ideal with high temperature and low pressure, however. For most problems, unless stated otherwise, ideal gases should be the ones involved such that we can simplify calculations and use i.e. PV=nRT (ideal gas law).
by Eva Zhao 4I
Thu Jan 09, 2020 9:17 pm
Forum: Ideal Gases
Topic: Definition of Ideal Gases?
Replies: 3
Views: 69

Re: Definition of Ideal Gases?

Ideal gases have negligible volume, no attractive or repulsive forces, random movement, and perfectly elastic collisions. Most gases behave close to the ideal with high temperature and low pressure; hence an ideal gas is theoretical since PV=nRT shows that pressure typically increases with temperatu...
by Eva Zhao 4I
Thu Jan 09, 2020 9:05 pm
Forum: Ideal Gases
Topic: R in PV=nRT
Replies: 34
Views: 350

Re: R in PV=nRT

R is the universal gas constant, sometimes known as the Regnault constant. The value of the R constant is 8.3144598 J/mol·K.
by Eva Zhao 4I
Tue Dec 03, 2019 10:50 pm
Forum: Administrative Questions and Class Announcements
Topic: Saying Thank You to Dr. Lavelle
Replies: 228
Views: 103368

Re: Saying Thank You to Dr. Lavelle

Dear Dr. Lavelle, Thank you for an incredible winter quarter! I really appreciate all of the resources you provide on your website and the many, many hours of review and study sessions you offer. You definitely help to build a stable foundation for future courses in chemistry. With that, I look forw...
by Eva Zhao 4I
Tue Dec 03, 2019 10:38 pm
Forum: Bronsted Acids & Bases
Topic: Bronsted Versus Lewis
Replies: 4
Views: 110

Re: Bronsted Versus Lewis

The Lewis definition is more consistent in classifying most acids-bases, since a molecule might not have hydrogen to donate for the definition of a Bronsted acid. However, my TA said, at least for now, the Bronsted definition will be primarily used (i.e. for writing chemical equations in acid-base r...
by Eva Zhao 4I
Tue Dec 03, 2019 10:32 pm
Forum: Bronsted Acids & Bases
Topic: Conjugate acids and bases
Replies: 5
Views: 38

Re: Conjugate acids and bases

Hopefully, this will help you visualize the acid-base pairings in a reaction (if you're a visual learner like me):

Image
by Eva Zhao 4I
Tue Dec 03, 2019 10:27 pm
Forum: Bronsted Acids & Bases
Topic: bronsted vs lewis
Replies: 2
Views: 20

Re: bronsted vs lewis

Just to add on, if you think of a Bronsted acid as donating a proton, it's consistent with the idea of receiving electrons by definition of a Lewis acid (donates H + , gets e- back). Apparently, the Lewis definitions are more consistent for most acids/bases, especially for those without hydrogen whe...
by Eva Zhao 4I
Tue Dec 03, 2019 10:14 pm
Forum: Bronsted Acids & Bases
Topic: Strong Acids and Bases
Replies: 4
Views: 29

Re: Strong Acids and Bases

I agree! Knowing strong acids and bases would be very helpful in writing out the equation or for calculations, especially for our current level of chemistry which focuses mainly on strong acids and bases. Table 6C.3 in the textbook, page 464, might be helpful.
by Eva Zhao 4I
Wed Nov 27, 2019 1:13 pm
Forum: Naming
Topic: Oxidation
Replies: 14
Views: 103

Re: Oxidation

To add on, if the problem asks for the oxidation number of the metal, use:
(# of metal ion)*(oxidation number) + (# if each ligand)*(charge of each ligand) = charge of ion

The charge of the ion should be given, allowing you to isolate and solve for the oxidation number of the metal.
by Eva Zhao 4I
Wed Nov 27, 2019 12:39 pm
Forum: Bronsted Acids & Bases
Topic: Strong acid
Replies: 6
Views: 294

Re: Strong acid

Strong acids almost completely ionize in solution. HCl, which dissociates completely, is a strong acid. Therefore, 0.1 M HCl(aq) implies 0.1 M H3O+(aq) and 0.1 M Cl-(aq).
by Eva Zhao 4I
Wed Nov 27, 2019 12:33 pm
Forum: Bronsted Acids & Bases
Topic: Definition
Replies: 5
Views: 39

Re: Definition

A Bronsted acid is a proton donor (i.e. HCl, HBr), while a Lewis acid is an electron acceptor (i.e. BF3, H+).
by Eva Zhao 4I
Wed Nov 27, 2019 12:27 pm
Forum: Bronsted Acids & Bases
Topic: Bronsted Acids and Bases
Replies: 3
Views: 121

Re: Bronsted Acids and Bases

Bronsted acids are proton donors. I believe that H2SO3 is a Bronsted acid because it can donate a proton to become HSO3-, its conjugate base.
by Eva Zhao 4I
Wed Nov 27, 2019 12:01 pm
Forum: Bronsted Acids & Bases
Topic: Bronsted acid
Replies: 9
Views: 340

Re: Bronsted acid

By definition, Bronsted acids are proton donors. HBr is a Bronsted acid because it can donate its H+, to which it would become Br-.
by Eva Zhao 4I
Fri Nov 22, 2019 12:57 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Polarity
Replies: 7
Views: 61

Re: Polarity

To add on, a good rule of thumb is that if the structure is symmetrical, it's typically nonpolar, and if the structure is asymmetrical, it's typically polar. You may have to look at electronegativity differences and dipole-dipole interactions to check.
by Eva Zhao 4I
Fri Nov 22, 2019 12:42 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: bent v. angular
Replies: 20
Views: 105

Re: bent v. angular

Bent and angular refer to the same shape with VSEPR formulas AX2E or AX2E2.
by Eva Zhao 4I
Fri Nov 22, 2019 12:40 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: polar vs non polar
Replies: 6
Views: 40

Re: polar vs non polar

To add on, sometimes you can tell just by looking at the formula where it may be obvious that hydrogen bonds are present, etc. Often times, it's better to draw out the structure to be sure, during which looking at the symmetry of the structure helps to determine whether or not it's polar/nonpolar. N...
by Eva Zhao 4I
Fri Nov 22, 2019 12:27 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Why is CH2Cl2 polar?
Replies: 12
Views: 81

Re: Why is CH2Cl2 polar?

To add on, typically speaking, a molecule with a tetrahedral shape is only nonpolar if all four atoms bonded to the central atom are the same.
by Eva Zhao 4I
Fri Nov 22, 2019 12:22 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Removing Non-Axis Atoms First
Replies: 4
Views: 32

Re: Removing Non-Axis Atoms First

Referencing back to the seesaw shape, the lone pair in the equatorial plane is removed first to minimize repulsion. By doing so, the more repulsive lone pair interacts with only 2 bonds at 90° instead of three bonds if the axial lone pair was removed. Hence, removing the lone pair in the equatorial ...
by Eva Zhao 4I
Sat Nov 16, 2019 8:29 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: What is VSPER
Replies: 14
Views: 141

Re: What is VSPER

VSEPR stands for Valence-Shell Electron-Pair Repulsion. The VSEPR Model explains the experimentally observed shape of molecules and can predict distortions qualitatively but not quantitatively. It may be helpful to memorize the shapes and general angles, though you probably don't need to memorize ex...
by Eva Zhao 4I
Sat Nov 16, 2019 8:14 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: VSEPR
Replies: 2
Views: 167

Re: VSEPR

Lewis structures are 2-D representations of molecular shape and indicate the approximate location of bonding e- and lone pair e-. The VSEPR Model, or the Valence-Shell Electron-Pair Repulsion Model, explains the experimentally observed shape of molecules. Note that the VSEPR Model can predict distor...
by Eva Zhao 4I
Sat Nov 16, 2019 7:59 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: seesaw
Replies: 9
Views: 62

Re: seesaw

If you're a visual learner like I am, here's the image for SF4, AX4E with 4 bonding pairs and 1 lone pair:
Image
by Eva Zhao 4I
Sat Nov 16, 2019 7:56 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Bond Angles
Replies: 8
Views: 54

Re: Bond Angles

Like what others have said, it will probably be helpful to memorize the angles. As a side note, trigonal planar angles are 120 degrees. The 107 degrees was for, i.e. NH3, a molecule with 1 lone pair and 3 bonding pairs.
by Eva Zhao 4I
Sat Nov 16, 2019 7:50 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Polar vs. Nonpolar
Replies: 12
Views: 79

Re: Polar vs. Nonpolar

While not always the case, symmetrical shapes typically indicate the molecule is nonpolar; there are dipole-dipole interactions, but they cancel out for a nonpolar molecule. Asymmetrical shapes typically indicate the molecular is polar since the dipole-dipole interactions can't cancel out.
by Eva Zhao 4I
Fri Nov 08, 2019 1:07 pm
Forum: Ionic & Covalent Bonds
Topic: Ionic vs. Covalent
Replies: 4
Views: 556

Re: Ionic vs. Covalent

Just to add on, for the more in-between electronegativity differences, where it's uncertain whether the bonds are covalent or ionic, it's based on properties. For example, if the substance can dissociate in water, it may be more ionic in character.
by Eva Zhao 4I
Fri Nov 08, 2019 12:23 pm
Forum: Quantum Numbers and The H-Atom
Topic: Quantum Numbers
Replies: 6
Views: 54

Re: Quantum Numbers

ms is usually pretty arbitrary unless the question specifies that the electron is +1/2 or -1/2. The most important thing to remember is that no two electrons in an atom can have the exact same four quantum numbers, so if one electron is +1/2, the other in the pair is -1/2.
by Eva Zhao 4I
Fri Nov 08, 2019 12:17 pm
Forum: Quantum Numbers and The H-Atom
Topic: Formal names for each letter
Replies: 5
Views: 61

Re: Formal names for each letter

n = Principle Quantum Number l = Angular Momentum Quantum Number m l = Magnetic Quantum Number m s = Spin Magnetic Quantum Number n defines l and m l and as such is the principle quantum number. For l, I tend to think of it as the odd one out; it's not the principle and it's not magnetic so it must ...
by Eva Zhao 4I
Fri Nov 08, 2019 12:03 pm
Forum: Quantum Numbers and The H-Atom
Topic: n, l ,ml, ms
Replies: 13
Views: 118

Re: n, l ,ml, ms

As mentioned, ms can be either +1/2 or -1/2, and it's pretty arbitrary unless the question specifically provides the spin. The most important thing to note is that no two electrons in the same atom can have the exact same four quantum numbers.
by Eva Zhao 4I
Fri Nov 08, 2019 12:00 pm
Forum: Quantum Numbers and The H-Atom
Topic: Quantum numbers
Replies: 12
Views: 96

Re: Quantum numbers

To add on, the angular momentum quantum number (l), or the secondary quantum number, describes the shape of the orbital that an electron occupies with allowed values of n-1.
by Eva Zhao 4I
Sat Nov 02, 2019 9:16 pm
Forum: Quantum Numbers and The H-Atom
Topic: Angular Momentum Quantum Number
Replies: 3
Views: 45

Re: Angular Momentum Quantum Number

The Angular Momentum Quantum Number (l) describes shape by corresponding with a certain sub-shell, each of which with a unique arrangement. I hope this diagram will help you better picture what the second quantum number describes; note that not all possible variations of each sub-shell are shown in ...
by Eva Zhao 4I
Sat Nov 02, 2019 9:07 pm
Forum: Quantum Numbers and The H-Atom
Topic: Ms and ML
Replies: 6
Views: 43

Re: Ms and ML

Magnetic Quantum Number (m l ) labels different orbitals or sub-shells with allowed values of l, l-1,..., 0,..., -l. For example: l=2; m l can be -2, -1, 0, 1, 2 Spin Magnetic Quantum Number (m s ) denotes the spin of an electron with values of +1/2 or -1/2, depending on if the electron is spin up o...
by Eva Zhao 4I
Sat Nov 02, 2019 9:01 pm
Forum: Quantum Numbers and The H-Atom
Topic: Quantum Number
Replies: 3
Views: 32

Re: Quantum Number

As said previously, the spin magnetic quantum number (ms) can be +1/2 or -1/2. It's usually pretty arbitrary, so long as you're aware that no two electrons in the same atom have the same four quantum numbers.
by Eva Zhao 4I
Sat Nov 02, 2019 8:58 pm
Forum: Quantum Numbers and The H-Atom
Topic: Magnetic Quantum Number
Replies: 5
Views: 35

Re: Magnetic Quantum Number

You would only say 5 if the question asks for the number of possible ml values. Otherwise, given that l=2, you can't say that 5 is a possible value of ml since the allowed values are l, l-1,..., 0,..., -l.
by Eva Zhao 4I
Sat Nov 02, 2019 8:51 pm
Forum: Quantum Numbers and The H-Atom
Topic: Quantum Numbers
Replies: 7
Views: 72

Re: Quantum Numbers

The spin number, or the spin magnetic quantum number (m s ), is +1/2 or -1/2 since an electron can be spin up or down. The significance is that no two electrons in the same atom can have the same four quantum numbers. It tends to be pretty arbitrary as long as the combination of the four quantum num...
by Eva Zhao 4I
Thu Oct 24, 2019 5:18 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Hunds Rule
Replies: 2
Views: 307

Re: Hunds Rule

Here's a visual aid for Hund's Rule, which may help you understand a bit better (if you're visual learner like I am):

Image
by Eva Zhao 4I
Thu Oct 24, 2019 5:04 pm
Forum: Quantum Numbers and The H-Atom
Topic: Spin Quantum Number
Replies: 4
Views: 34

Re: Spin Quantum Number

An important thing to note with the inclusion of the spin quantum number is that no two electrons in the same atom can have exactly the same four quantum numbers. The spins are indicated, as everyone said, by +1/2 or -1/2 since the electron can spin up or down.
by Eva Zhao 4I
Thu Oct 24, 2019 5:02 pm
Forum: Quantum Numbers and The H-Atom
Topic: Orbital Angular Momentum
Replies: 3
Views: 24

Re: Orbital Angular Momentum

The angular momentum quantum number (l) describes "shape" and is also known as the sub-shell. The allowed values are l = 0,1,2,...,n-1. Note that n is the principle quantum number which determines energy and size, or shells.

l = 0 s-orbital
l = 1 p-orbital
l = 2 d-orbital
l = 3 f-orbital
by Eva Zhao 4I
Wed Oct 23, 2019 9:55 am
Forum: Properties of Light
Topic: Photons
Replies: 3
Views: 31

Re: Photons

Hello! Just to add on a little more information, certain energy formulas will not work for photons due to photons having zero mass. E=mc^2, for example, will not work for the photon as it would for an electron; photons have energy, yet the formula E=mc^2 would result in an answer of 0 J for the phot...
by Eva Zhao 4I
Wed Oct 23, 2019 9:40 am
Forum: Properties of Light
Topic: Destructive Interference
Replies: 3
Views: 38

Re: Destructive Interference

Just to add on, destructive interference occurs when waves come together in a way that they cancel each other out. While usually in between for a result of smaller amplitude, destructive interference can produce zero amplitude in the right conditions. Note that when two waves interfere destructively...
by Eva Zhao 4I
Wed Oct 16, 2019 5:25 pm
Forum: Photoelectric Effect
Topic: Work function units
Replies: 4
Views: 277

Re: Work function units

Just to add on: the work function is the energy needed to remove an electron, also known as the threshold energy. The unit for energy is J (joule); as such, the unit for work function is J.
by Eva Zhao 4I
Wed Oct 16, 2019 4:58 pm
Forum: SI Units, Unit Conversions
Topic: Joules
Replies: 2
Views: 30

Re: Joules

The SI units for Joules (J) are kg * m^2 * s^-2. Not sure if this will be the best method to help you, but my TA explained how he remembers the SI units for Joule: W = F * d; where W is work (unit is J), F is force, and d is distance = [m(a)] * d; since F=ma = [kg(m*s^-2)] * m; where kg is SI unit f...
by Eva Zhao 4I
Wed Oct 16, 2019 4:46 pm
Forum: SI Units, Unit Conversions
Topic: Conversion
Replies: 2
Views: 32

Re: Conversion

I agree with the previous post! Just to make it clearer (if you're a visual learner like I am): \frac{2.26*10^-46 m}{1} * \frac{1 nm}{1*10^-9 m} Since meters (m) is in both the numerator and denominator, you can cross them out. Then you'll be left with nanometers (nm), the unit you want. Again, conv...
by Eva Zhao 4I
Wed Oct 16, 2019 2:38 pm
Forum: Quantum Numbers and The H-Atom
Topic: spin magnetic quantum number
Replies: 3
Views: 66

Re: spin magnetic quantum number

Just to add on to previous replies, the spin magnetic quantum number was deemed necessary after the Stern and Gerlach Experiment, where the electrons were found to have two different spins (hence +1/2 or -1/2). It's important to note that no two electrons in the same atom have the same four quantum ...
by Eva Zhao 4I
Wed Oct 16, 2019 2:10 pm
Forum: Properties of Light
Topic: Lyman Series & Balmer Series
Replies: 4
Views: 37

Re: Lyman Series & Balmer Series

Just to add on, the Balmer Series corresponds to visible light, n1=2; Lyman series corresponds to ultraviolet light, n1=1. This is good to know for some problems that just provide what type of electromagnetic radiation is involved, i.e. 1A.15.
by Eva Zhao 4I
Sat Oct 12, 2019 1:13 am
Forum: SI Units, Unit Conversions
Topic: Conversion
Replies: 6
Views: 226

Re: Conversion

The unit for joules (J) in SI units is kg⋅m^2⋅s^−2. Like what others have said, meters and joules are units of measure for different criteria; meters are units of length and joules are units of energy. A possible equation that relates the two is: Kinetic energy = 1/2 * mass * velocity ^2.
by Eva Zhao 4I
Sat Oct 12, 2019 12:56 am
Forum: SI Units, Unit Conversions
Topic: knowing how many sig figs to use
Replies: 17
Views: 125

Re: knowing how many sig figs to use

To keep your work as accurate as possible, try not to round until the final answer. On the basis that you do round, keeping a certain number of significant figures should be enough to result in the final answer. For example, if the answer needs to have two significant figures, keeping four significa...
by Eva Zhao 4I
Sat Oct 12, 2019 12:52 am
Forum: SI Units, Unit Conversions
Topic: Formula units vs molecule
Replies: 7
Views: 83

Re: Formula units vs molecule

Formula units work the same way as do molecules and atoms through Avogadro's number. According to the book, the key difference is that formula units pertain to ionic compounds, whereas molecules are of molecular compounds and atoms are of elements. If you want to check it out yourself, the informati...
by Eva Zhao 4I
Sat Oct 12, 2019 12:41 am
Forum: Balancing Chemical Reactions
Topic: Writing an Equation for the Reaction
Replies: 9
Views: 1842

Re: Writing an Equation for the Reaction

Just to add onto the topic of combustion, O2 (oxygen gas) is reacted with the given fuel for the products of CO2 (carbon dioxide) and H2O (water). Depending on the fuel, you may need to balance the equation.
by Eva Zhao 4I
Sat Oct 12, 2019 12:33 am
Forum: SI Units, Unit Conversions
Topic: Practice Problems?
Replies: 11
Views: 159

Re: Practice Problems?

There is a list of practice problems, for fundamentals and further topics, on the class syllabus. Just scroll down to the last pages.

Here's the link: https://lavelle.chem.ucla.edu/wp-conten ... SYLL_1.pdf
by Eva Zhao 4I
Fri Oct 04, 2019 10:30 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: E.16
Replies: 2
Views: 40

Re: E.16

Thanks!
by Eva Zhao 4I
Fri Oct 04, 2019 3:59 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Avogadro's number
Replies: 9
Views: 84

Re: Avogadro's number

Avogadro's number, 6.022 x 10^23, represents the number of "particles" within one mole of a substance. These particles can be, for example, the number of atoms per mole of a given compound.
by Eva Zhao 4I
Fri Oct 04, 2019 3:54 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Rounding
Replies: 12
Views: 160

Re: Rounding

It's best to only round at the end of the calculations. If you round throughout the series of calculations, the answer could be different depending on the number of significant figures needed. Generally speaking, using 7 instead of 6.94 for Lithium can likely get you the right answer for say multipl...
by Eva Zhao 4I
Fri Oct 04, 2019 3:47 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Theoretical vs. Actual Yield
Replies: 38
Views: 432

Re: Theoretical vs. Actual Yield

Theoretical yield is the amount of product that can be obtained if a chemical reaction has 100% efficiency, the maximum amount of yield possible. Actual yield is the amount of product actually produced by the reaction. Due to side reactions, impurities, some of the product sticking on to the sides o...
by Eva Zhao 4I
Fri Oct 04, 2019 3:39 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: E.16
Replies: 2
Views: 40

E.16

E.16 The molar mass of the metal oxide M2O is 231.74 g.mol^-1. What is the molar mass of the chloride of this metal?

For this question, what exactly is the chloride within M2O, and how would you go about finding the molar mass of said chloride?
by Eva Zhao 4I
Fri Oct 04, 2019 12:06 pm
Forum: Balancing Chemical Reactions
Topic: Fractions in Balancing Equations
Replies: 11
Views: 121

Re: Fractions in Balancing Equations

Stoichiometric coefficients must typically be a whole number. If you do ever have a fraction after balancing the equation, multiply the fraction by the lowest number that would make it a whole number.

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