Wednesday
December 7, 2016

Posts by Shyanne

Total # Posts: 24

American Government
1 . acd 2. a 3. b
November 14, 2016

probability
You guess on all of the answers on a 10 question quiz. If there are 4 possible answers for each question, what is the probability that you get 3 questions right? i've tried doing this problem multiple times and i'm just not understanding.. step by step would be very ...
May 10, 2016

math
I don't get this I've been absent for 3 weeks On a math quiz Mary score 3 points for each of the 12 multiple-choice question she answered correctly and five points for each of the eight free response question she answered correctly. What was the total number of points ...
February 25, 2015

math
The least amount of money he could have is 120 dollars
February 25, 2015

Physical sciences(Chemistry)
Ethanoic holds in heat making it colder so it takes a higher temp. to make it boil but ethanol releases heat making it warmer and a lower boiling temperature this is also why ethanol is flammable but ethanoic is not
February 25, 2015

math
The boundary line is the line on our graph where x or y equals infinity.
December 23, 2013

Chem
Electroplating is a widely used process. One of the most popular electroplating processes involves the plating of two metals, nickel and chromium, in separate vats. Nickel is plated first because it adheres better to iron, then the object is moved to a second vat where a layer...
May 28, 2013

chemistry
Cathode = Cu2(s) + 2e- ¨ Cu(s) Anode = 2H2O(l) ¨ O2(g) + 4H(g) + 4e- Net = Cu2(s) + 2H2O(l) ¨ Cu(s) + O2(g) + 4H(g) the minimum voltage that must be supplied to electrolyze aqueous copper(II) sulfate
April 11, 2013

Chemistry
Between Mg and Zn which one is the anode and which one is the cathode? And between Mg and Fe which one is the anode and which one is the cathode? Please help!!
April 9, 2013

electrochem
Between Mg and Zn which one is the anode and which one is the cathode? And between Mg and Fe which one is the anode and which one is the cathode? Please and thank you. im so stuck. :/
April 8, 2013

Electrochemistry
Between Mg and Zn which one is the anode and which one is the cathode? And between Mg and Fe which one is the anode and which one is the cathode? Please and thank you. im so stuck. :/
April 7, 2013

Electrochemistry
Between Mg and Zn which one is the anode and which one is the cathode? And between Mg and Fe which one is the anode and which one is the cathode? Please and thank you. im so stuck. :/
April 5, 2013

chem
calculate the volume of water that can be treated if 50 g of potassium permanganate is added to the system. Assume that the concentrated iron (II) ions in well water is 5.0ppm
April 3, 2013

chemistry
molar enthalpy of combustion for pentane? Mass C5H12= 2.15g Mass H2O= 1.24kg Initial temp= 18.4°C Final temp= 37.6°C
January 10, 2013

chemistry
im doing ethene so it is -84.0. Howe do i spilt the two up? the second question confuses me and im completely frazled about what to do. C2H6(g) + 3O2(g) = 2CO2(g) + 2H2O(g) =(2mol CO2 x -393.5kJ/1 mol CO2 + 2mol H2O x -241.8kJ/ 1 mol H2O) - (1mol C2H6 x -84.0/ 1 mol C2H6 + ...
January 8, 2013

chemistry
how do i express the enthalpy of reaction calculated in question above as a molar enthalpy of reaction per mole of carbon dioxide?
January 8, 2013

chemistry
ok i got to (2mol CO2 x -393.5kJ/i mol CO2 + 2mol H2O x -241.8kJ/ 1 mol H2O) - (1mol C2H6 x -94.0/ 1 mol C2H6 + 3mol O2 x 0kJ/ 1 mol O2) = (-1270.6kJ0 - (-84.0) = -1186.6kJ is this right? and how do i do the second part about expressing the enthalpy of reaction calculated in ...
January 8, 2013

chemistry
Calculate the enthalpy of reaction for the combustion of ethene. Express the enthalpy of reaction calculated in question above as a molar enthalpy of reaction per mole of carbon dioxide.
January 8, 2013

Math
Use the following information to determine the number of people in each region of the Venn Diagram 174 people were asked which of these instruments that they could play: Piano, Drums, or Guitar. 33 people could play none of these instruments. 9 people could play all three of ...
October 10, 2012

Physics
A crate with a total mass of 50 kg is initially at rest on a level floor.What is the weight of the crate?
June 22, 2011

science
how do you prevent an egg from breaking from a height of 10-15 ft.?
May 16, 2011

history project
how to i get started on a middle ages shield?
December 16, 2008

Education
Does the Individuals Disabilities Education Act (IDEA) and the Education for the Handicapped Act Ammendments of 1986, focus on services provided to families, children, communities, or to schools? I am thinking they provide services to families. Don't they? Education of the...
May 8, 2007