Leonardo
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$12.5\ \mathrm{kJ}$ of heat was absorbed by the surroundings. I found this by using the mcat formula and the specific heat capacity of water (4.18 J/(g °C)): $Q=m\cdot c\cdot\Delta T$ $Q = 950\ \... View answer Accepted answer 8 votes This model seems reasonable, as you can see from the formal charges carbon has the -1 value while the rest are 0. One thing that you have forgot is to add brackets around the structure to show that it ... View answer 3 votes I don't believe it is the metal itself that should concern you, but when it reacts with something in your food it might lose its metallic bond and therefore allow you to ingest tiny amounts of tin via ... View answer Accepted answer 12 votes One periodic table that apparently physicists find useful is ADOMAH periodic table, for its usefulness is finding electron configuration of a particular element. More information at this guide. A ... View answer 3 votes My advice: Look up manuals where applicable, or experiment with methods if you cannot find good answers, hopefully, you can figure out what exact material it is you are cleaning. What I can tell you ... View answer 1 votes First, is this a question from your book, and do you have the correct answer to check your work. Do you know how to use dimensional analysis? Start with 50 mL. You have 2 Molarity of some subtance, ... View answer 1 votes What have you found so far? In a situation like this honestly I would go ahead and research what hot air balloons are commonly made with already. Find somebody more experienced in the hobby and ask ... View answer 1 votes In your example 0.000023 oz does indeed have two significant figures. It is indeed probably something only a very fine tuned scale could measure. Now consider that you add that mass to another sample ... View answer Accepted answer 5 votes My first guess as to the nature of this behaviour is similar to water. Hypothermia is a realistic risk if you are drenched in water. This is because water can absorb large amounts of energy (it has a ... View answer Accepted answer 3 votes My intuition is telling me that, based on your empirical formula and the image you provided, all three carbons are at the bends in the line-notation as is conventional in bond-line notation. The ... View answer Accepted answer 2 votes I have done a minimal amount of research to try and help you understand this material. The credibility of this research is very debatable, as it basically involves me typing in silicon nitride into ... View answer 5 votes I believe the confusion lies with the term Reducing sugar. From my perspective sucrose is not an ionic compound, it is covalently bonded. I believe that this should indicate to you that it does not "... View answer Accepted answer 6 votes What are the bond angles in a normal trigonal planar arrangement? Treat the center atom as in H C H as a trigonal planar arrangement with the middle (carbon) atom in the center with a third atom ... View answer Accepted answer 5 votes You haven't gotten anything wrong, you are entirely correct! A set of quantum numbers can be used to identify the specific electron in the sub-atomic world of an atom, and what path it occupies in ... View answer Accepted answer 9 votes A little research and perhaps a small experiment might help you figure something like this out on your own. First, have you tried wikipedia? A small mention of research can go a long way. Describing ... View answer 6 votes Adding on to DaleSwanson's correct answer: The ball-and-hill analogy is just saying that a ball will roll down a hill. This is because if the path is available it will find a way to the bottom of the ... View answer 4 votes Each atom tends to imitate the noble gases which have a full valence shell. Looking at your table you can see that boron is 3 spaces above helium, but 5 spaces behind neon. Boron would "prefer" to ... View answer 1 votes Warning: this is only a way to estimate and not necessarily good practice. I never actually did one like this, but I believe that one must use the equation$\Delta G$°$= \Delta H$°$ - T\...

If the reactants are AB + CD, it will be a double displacement (2 pairs of compounds) An example of this might be two salts that dissociate into their respective ions in a solvent, and then the ...

I got 17.542% by mass nitrogen. An explanation for beginners, a refresher for the rest of us: To make sure anyone reading knows what molar mass means: The mass of one mole of something, in our case ...

Fundamentally, dipolar simply means that a region of the molecule has a center of positive charge and a center of negative charge. We can say that water has a dipole moment because it is not a '...

Is the percent error formula you are looking for something like the formula this website service offers? Your lab instructor should have given you the formula, perhaps you missed that. Do you have a ...

was it those crazy tea fanatic Cuban scientists again? The particles can supposedly travel "upstream" if you were to say, pour it into your toilet as closely as your hand can get without a hazmat ...

There is one other way that I have used, using a linear system to solve this reaction. Although it can be used for other more casual reactions too, such as the combustion of ethanol for example. As ...

I guess that an alternative way of asking this question is what is the hybridization of H2SO4? A better way to ask this might be: "What is the hybridization of the sulfur atom in Hydrogen Sulfate?" ...