## Search found 106 matches

Tue Oct 01, 2019 11:31 am
Forum: Limiting Reactant Calculations
Topic: Determining Limiting Reactant by Mole or Mass
Replies: 8
Views: 114

### Re: Determining Limiting Reactant by Mole or Mass

I asked this same question to one of the TA's (I also was taught the same way) and he said that it should be fine as long as it makes sense and you get the correct answer. Remember in chemistry there are multiple ways to solve one problem so as long as it uses correct reasoning, there should be no i...
Tue Oct 01, 2019 11:23 am
Forum: DeBroglie Equation
Topic: Units for DeBroglie
Replies: 4
Views: 79

### Units for DeBroglie

Are the official units kg and meters? So if we were to be given a problem with km and g for instance, we would have to convert them?
Tue Oct 01, 2019 11:20 am
Forum: Balancing Chemical Reactions
Topic: Example H.1
Replies: 4
Views: 266

### Re: Example H.1

Therefore, each combustion reaction will have this skeletal structure: Molecule/Compound + O2 --> CO2 + H20 Remember to also always balance the equation! One tip that helps me to remember a combustion reaction is our breathing. We take in O2 from the air to survive and when we breathe out, we releas...
Tue Oct 01, 2019 11:07 am
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Understanding Titrations
Replies: 3
Views: 88

### Re: Understanding Titrations

Usually in a titration problem you would also use the formula M1V1=M2V2. On one side of the equation you input the molarity and volume of the Acid, while on the other side you input the molarity and volume of the base. And, you can calculate molarity using M= moles/Liters.
Tue Oct 01, 2019 10:58 am
Forum: Properties of Light
Topic: Intensity VS Frequency
Replies: 3
Views: 87

### Re: Intensity VS Frequency

Frequency is the number of cycles per second. Intensity is increasing the moles of electrons (so having more of them). Light has both wavelike and particle properties. This was shown in the photoelectric effect because when we increased intensity, there was no effect on the amount of electrons being...
Fri Sep 27, 2019 11:18 am
Forum: Empirical & Molecular Formulas
Topic: Fundamentals L.39:
Replies: 3
Views: 148

### Fundamentals L.39:

A 1.5 g sample of metallic tin was placed in a 26.45g crucible and heated until all the tin had reacted with the oxygen to form an oxide. The crucible and product together were found to weigh 28.35g. (a): What is the empirical formula of the oxide? (b): Write name of the oxide. So I found the empiri...

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