Mateo Aguilar

Macalester College

Chemistry

Chemistry teacher | Experienced educator in USA

I'm a Chemistry graduate from Macalester College, passionate about unraveling the mysteries of science. With a solid foundation in chemistry, I thrive on demystifying complex concepts and fostering a deep understanding among my students. My journey at Macalester has equipped me with invaluable skills to engage learners across various subjects. Whether it's stoichiometry or organic chemistry, I aim to cultivate a dynamic learning environment where curiosity flourishes. Through personalized guidance and interactive sessions, I empower students to embrace the wonders of science and excel in their academic pursuits. Let's embark on a transformative learning journey together.

Questions

Why the melting and boiling point of helium is lower than krypton? (4marks)
Write a balanced nuclear equation for the beta decay of gold-211. Include atomic number, mass number, and symbol for each element. Explain your work?
How would you prepare 300 mL of 0.750 M KCl?
Which is the strongest reducing agent among #H_2O , H_2S , H_2Se , H_2Te#?
How many bonds are there in ethylene?
Hydrogen gas (2.02 g/mol) can be produced from the reaction of methane (16.05 g/mol) and water vapor (18.02 g/mol) according to the following reaction equation: CH4(g)+H2O(g)->CO(g)+3 H2(g) If 210 g CH4 react with excess H2O at 560 K and 0.926 atm?
What is the volume of 4.1g N2 at STP?
Topic:half-life decay 2.80moles of a radioactive element was originally present in a given sample of compound.if after 45.6moles of it remain,find the half life of this element?
If you react 30.0 grams of Al with 50.0 grams of Cl2, what is the theoretical yield of AlCl3? What is the limiting reagent?
. Explain the effect of acids on methyl orange and litmus paper?
How many mL of a 2% solution will result from the dilution of 20mL of a 10% solution? The answer is 100, but I can't figure out.
Is it necessary to use lithium aluminum hydride in reduction of nascent hydrogen?
How many moles of oxygen react with 6 moles of octane?
For a chemical reaction the activation energy for the forward reaction is +155kJ, and the backward reaction is +171kJ. What is the overall energy for the forward reaction?
As at higher altitudes the boiling point decreases bcx vapour pressure decreases but why it does take more time to cook food over there as the b.p is already decreased so it would be easy to reach that temp easily?
An ideal solution is formed from mixing six grams of the nonvolatile solute urea, CH4N2O, with 32 grams of methanol, CH3OH. The vapor pressure of pure methanol at 20 degrees celsius is 89 mmHg...?
You want to purchase a salt to melt snow and ice on your sidewalk. Which one of the following salts would best accomplish your task using the least amount (to reach same freezing point): NaCl or CaCl2?
How can you calculate mass by using volume and density?
What is the molarity of a solution made by dissolving 4.88 g of KCl in 423 mL of solution?
Concentrations of acids and bases?