2 part question/ PART ONE assume this to be an ideal gas,what volume of ammonia gas,NH3,in liters is produced at STP by the complete(UN-BALANCED) reaction of 100g of nitrogen,N2 with excess hydrogen? N2+H2+NH3
PART TWO/How much ammonia gas is generated if we react 200grams of N2
Please show...
So i was doing my chem work and came across these two questions, and im kind of stuck what to do!
1. Concentrated HI is 47.0% HI by mass and has a density of 1.50 g/mL. How many mL of this solution are required to prepare 250.0 mL of a 1.50 M HI solution?
(molar mass: 127.904 g/mol).
a. 64.3 mL...
I just got my quiz back for chemistry today and I don't understand why I got one of the answers wrong. The question is: The similar chemical behavior of the elements in a given group in the periodic table is best accounted for by the fact that these elements have:
A) the same number of electrons...
Carbon double bonds can be described as
A) two carbon atoms sharing one electron.
B) two carbon atoms sharing four electrons, and each sharing two electrons with hydrogen.
C) two hydrogen atoms and two NH3 molecules sharing electrons with carbon.
D) four hydrogen atoms sharing electrons with...
...tried to do it over and over again!!!!? Hydrochloric acid HCl reacts with sodium carbonate (Na2CO3), forming sodium chloride (NaCl), water (H2O), and carbon dioxide (CO2).
I balanced the equation: 2HCl(aq)+Na2CO3(aq)---> 2NaCl(aq)+H2O(l)+CO2(g)
The questions is :A 363 mL sample of unknown...
A 18.3 g sample of Cu metal (c = 0.39 J/g °C) is heated to 85.9 °C and then placed into a beaker containing 165 g of 10.1 °C water (c = 4.184 J/g °C). The metal and water are allowed to come to equilibrium. What is the enthalpy change for the Cu metal as it cools in the water?
Have some online HW to do, and only a few chances to get them right. Unfortunately, it doesn't tell me which ones I've gotten wrong :(. The following are the ones I wasn't 100% sure on. This is my last chance....You do not have to answer all of them, if you don't know them. Much appreciated!
1)...
I already have the Answers but I don't know how to get to them. Step by step would be extremely helpful!!
1.How many moles of oxygen are generated during the thermal decomposition of 7.75 g of lead (IV) oxide?
2.2. A sample of sodium metal having a mass of 5.45 g reacts with excess water...
Electron affinity increases in the periods across the p block. An exception to this trend occurs between groups 14 and 15.
Ex: compare the the EA's of C ([He]2s2 2p2) and N ([He]2s2 2p3). Adding an electron to a C atom gives a half-filled p sublevel. This occurs much more easily than forcing an...
a shiny film of mercury forms inside a test tube when mercury(II) oxide decomposes on heating.
2HgO(s) --> 2Hg(l) + O2; deltaHrxn= -181.6 kJ
find the enthalpy of reaction, deltaHrxn per gram of mercury(ll) oxide. (note that the enthalphy of reaction shown is for 2 moles of the oxide)
CAN...
Okay so the question is if you add 15mL of distilled water to 5mL of 0.5mol/L lead nitrate and then add 5mL of 0.5 mol/L of sodium chloride will a precipitate form? explain.
I know that when u mix lead nitrate and sodium chloride together a white precipitate forms. But if u added water to lead...
What is the best thought process while writing net ionic equations....
what should i be thinking?
and where can i find more practice for reaction predictions