## Search found 10 matches

Fri Oct 11, 2019 8:08 pm
Forum: Einstein Equation
Topic: Units
Replies: 17
Views: 954

### Re: Units

I'm sure that it is important that you know the proper SI units for each term because there will be many problems which can be solved by canceling out, thus helping you find a corresponding answer for that problem in the simplest form.
Fri Oct 11, 2019 1:12 pm
Forum: Einstein Equation
Topic: Wavelengths
Replies: 5
Views: 122

### Re: Wavelengths

Yes, I think the threshold energy and the energy required are the same, and this energy is also called the working function.
Fri Oct 11, 2019 1:02 pm
Forum: Properties of Electrons
Topic: Energy
Replies: 6
Views: 88

### Re: Energy

Also, how does the electron go back to it's ground state after it is in an excited state?
Fri Oct 11, 2019 12:37 pm
Forum: Empirical & Molecular Formulas
Topic: Molecular formula
Replies: 6
Views: 817

### Re: Molecular formula

If this information is given, this also means that you must find the empirical formula beforehand, and then find the molecular formula.
Fri Oct 11, 2019 12:32 pm
Forum: Photoelectric Effect
Topic: Photons and electrons
Replies: 5
Views: 93

### Re: Photons and electrons

When given the work function, just think of it as a particular threshold that the energy of the photon must meet or exceed. If that threshold is met, then that implies that there is enough energy to eject the electron.
Fri Oct 04, 2019 7:33 pm
Forum: SI Units, Unit Conversions
Topic: Mass % comp accuracy F5
Replies: 5
Views: 143

### Re: Mass % comp accuracy F5

I think a slight difference in the solution you get versus the solution that is given shouldn't be too much of a problem. As long as they both roughly round up to about the same answer it should be fine(that is if the solution is within decimal form).
Fri Oct 04, 2019 4:00 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: HW E. 1
Replies: 3
Views: 107

### Re: HW E. 1

Like the problem being discussed here, will other problems also display the radius rather than the diameter? Also why doesn't the problem directly display the diameter instead?
Fri Oct 04, 2019 3:50 pm
Forum: Empirical & Molecular Formulas
Topic: Difference between empirical and molecular formulas
Replies: 6
Views: 141

### Re: Difference between empirical and molecular formulas

Yeah, whats easiest for me to distinguish between the two is to note that the molecular formula is a multiple of its corresponding empirical formula, so the empirical formula basically tells the most simplified version of the ratio of atoms present.
Fri Oct 04, 2019 1:40 pm
Forum: SI Units, Unit Conversions
Topic: Why do we always need grams when solving a problem?
Replies: 6
Views: 105

### Re: Why do we always need grams when solving a problem?

Using grams is essential because the unit of measurement for a molar mass consists of grams per mole. Therefore, given a mass measured in grams as well as a corresponding molar mass, enables you to find the mole of an element/compound. So this would make it much more simple to make a conversion betw...
Tue Oct 01, 2019 12:53 pm
Forum: Ionic & Covalent Bonds
Topic: Ionic vs Covalent
Replies: 32
Views: 12181

### Re: Ionic vs Covalent

Ionic bonds are stronger than covalent bonds due to the fact that they involve the transfer of electrons rather than an equal sharing of electrons, which occurs within covalent bonds, and usually, more energy is required to dissociate ionic bonds.