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According to the following chemical equation: N2 + 3H2 → 2NH3 How many grams of hydrogen are... so we did a chem lab and one of the questions is to tabulate the amount of S2O3 consumed in moles an... Hi, I'm doing a chem lab of the Percent Composition of Potassium Chlorate-A Gas Law Experiment and w... Although I do very well in chemistry I never really understood converting units. Perform each of th... Which one of the following chemicals does the body generate during regular exercise? AP Chem --- PbS + O2 = PbO + SO2 Balance the equation and write a short paragraph explaining the... Hi! I need help with my Chem homework. "When acetylene, C2H2, burns, how many liters of O2 at ST... Hi, This is one of my chem hw problems. Does anyone have links to websites that might help me solv... I did a chem lab and have to figure out some stuff off of some data I found during the lab Weight... For a chem lab, i was given a table that results when pairs of chemical solutions are mixed.For each... please help! Is RTP in chemistry (thermochemistry and electrochemistry) referring to room temper... help with the chem lab. the molecular of a volatile liquid. 29. Consider the following chemical equations and their enthalpy changes. CH4(g) + 2O2(g) → CO2(g)... What are the products of a chemical reaction involving NaCl, HNO3, and AgNO3? This Chem problem is really difficult -Need help please! Magnesium Consists of three naturally occ... What professions would use chemical bonding? So for Chem we have to answer a question asking why graphing is a more accurate method for measuring... Ok, so in my gen chem 1 class, the teacher showed us that ethanol would not dissolve a sugar cube wh... I have a question for chem 1LD webworks number 4. it asks to repeat the previous question steps and... Im in Chem. but looks like physics.. If a rock climber accidentally drops a 70.5 g piton from a heig... For chem we did a kinetics lab based on the rate of reaction of peroxydisulfate ion with iodide ion.... AP Chem - Which element is oxidized in the following reaction: CuO(s) + H2 (g)  Cu(s) + H2O (l) AP Chem ---- Which type of radiation is emitted when chromium 51 decays into manganese 51? Sho... Hello! I was working on my Chemistry HW about metric conversion. Can you please check to see if my a... When doing an ICE Chart in Chemistry, when do you know whether the C is a negative or positive?... which of these describes a chemical reaction? a. Atoms are created by elements b. Atoms combine to... I have a chem project and I did the work but I’m not sure if I’m correct or not. 1. Our reactant... Which is least affected by chemical weathering? A. a pile of tiles made of feldspar B. a s... Which is least affected by chemical weathering? a chair made of plastic a chair made of plastic... What are two examples of chemical changes that occur in the world around us? Why are they chemical... Which is least affected by chemical weathering?(1 point) Responses a statue made of marble a st... OMG i'm soo screw for chem.. >_<ahhh i wonna drop it soo bad!!! PLEASE help me.... AND THANK U!!!... Hi! I'm in chem class and I don't know the answer to these questions I have several metal allo... I was doing a lab today in chemistry, and I do not know if I got my measurements correctly. My teach... where u from r u chem proff... where do u teach .. i like the way u answers u r really gud... I'm trying to balance this chemical equation but it's just not working. C7H14O2+O2 yields CO2 +... Use the following balanced chemical equation to calculate the mass of carbon dioxide produced from t... This is for organic chem lab. I don't understand how to calculate the relative Rf values by setting... how can spectra be used in chemical analysis? my ap chem teacher has been absent for the past two weeks and part of the notes her sub gave us to... So we have a question for chem. homework and i really don't understand. can you please explain it...... im doing a graph for chem lab with excel. my classmate created a graph with these coordinates:... I need help with my chem home work. Please show me the answers because this question is a very confu... Hey I have the AP Chem test coming up and i was wondering where I could find the answer key to some... chem help!! have to make a graph. need help plzz.. thank you!!!! fastttt!!. Make sure to label axes... who are the father we call chemist? enumerate the different works of a chemist If a substance undergoes a chemical change, could its volume change? Dr. Mann mixed 10.357 g of chemical A,12.062 g of chemical B, and 7.506 g of chemical c to make 5 do... Okay I've got a HUGE chem test tomorrow and I desperately need help! Please help!!!! 73. Hematite... The starting products of a chemical reaction are 92.6g of Hg and 7.4g of oxygen (O) gas. A scientist... My chem class just finished a lab in which the objective was to find the percentage of silver and ba... Explain cautions to using chemicals in general and specifically after reading the product direction... is a chemical reaction and chemical change the same if not what is the difference? Suppose 100 moles of a chemical is spilled into a lake. After 15.0 days, the total amount of the... I was reviewing chem equations online. This one site said this is a balanced equation. I don't see... I just finished an organic chemistry lab experiment on separating and analyzing an unknown acid/neut... Is decomposition a natural chemical change? Is photosynthesis a natural chemical change? thanks!... Magnesium nitrate contains chemical bonds that are ? 1. Covalent Only 2. Ionic Only 3. Both Cov... describe the rate at which chemical weathering generally takes place. Explain how to solve: A chemist has one solution containing 30% insecticide and another solution... My chem teacher gave us this problem Twelve-gauge copper wire,like the kind commonly used in reside... The combining form chem/o is used to form the word chemotherapy because therapy begins with a ______... These UV photons can break chemical bonds in your skin to cause sunburn—a form of radiation damage.... For my chem class I have 3 elements and have to find what they are used for today or an interesting... So my chem experiment asks us: What is the molarity of a 6.0 ppm solution (it's a 6.0 ppm chlorophyl... My chem book gives me the following Hess' Law example: Mg + 2HCl --> H2 MgCl2 Delta H1... Student in O-Chem Lab conducts a melting point experiment with an unknown compound and observes a me... thermochemistry chem conceptual. i just want to check my understanding of this Say you got thi... I am filling out a chem packet. Is what graphite, diamond and fullerene have in common is that they... So my chem professor had a slide with a question that follows: If you combine 100 ml of 0.10 M... Write a balanced Chem. Eq 1. Chlorine gas will react with aqueous sodium fluoride if 200J of energ... Lesson 16: Unit Test CHEM A Unit 5: Chemical Formulas and Reactions 1c 2b 3c 4a 5a 6c 7b... write a balanced chem equation for solid lead (II) sulfide reacts with aq hydrochloric acid to form... Deriving Chem Beer's Law's Equation By comparing the absorbance of each trial solution, Aeq, to the... Is a forest fire a natural chemical change? Please help me find some other natural chemical chang... Chem Tech makes paper cones used to filter liquids in lab experiments. To make the paper cones, the...