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Chemistry
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Recent activity
Someone from Christchurch, New Zealand asked a question in
Algebra
How do you factor trinomials?
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6 minutes ago
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· in
Factorization of Quadratic Expressions
,
Algebra
Michael
wrote an answer to a
Chemistry
question
Why is the oxidation state of noble gas zero?
The oxidation state of a noble gas is not always zero. The high ...
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14 minutes ago
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· in
Oxidation Numbers
,
Chemistry
Nuzhat N.
wrote an answer to a
Algebra
question
How do you calculate slope from a graph?
to calculate [slope](http://socratic.org/algebra/graphs-of-linear-equations-and-functions/slope) you'll need two points from that line and ...
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41 minutes ago
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· in
Slope
,
Algebra
Michael
wrote a comment in
Chemistry
How to calculate the maximum kinetic energy of photo emitted electrons if uv radiation has a wavelength of 275 nm?
"Hi Mutale. Can you state the work function or threshold frequency? It should be given with the question."
52 minutes ago
·
· in
Calculations with wavelength and frequency
,
Chemistry
Someone from Ottawa, Canada asked a question in
Trigonometry
How do you use properties of inverse trigonometric functions to evaluate an expression?
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52 minutes ago
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· in
Inverse Trigonometric Properties
,
Trigonometry
Someone from Mexico asked a question in
Trigonometry
How do you use the law of cosines to find the area of a triangle?
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54 minutes ago
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· in
The Law of Cosines
,
Trigonometry
Michael
wrote a comment in
Chemistry
How to calculate the maximum kinetic energy of photo emitted electrons if uv radiation has a wavelength of 275 nm?
"Hi Bens'n. You have used the wavelength of the uv light to calculate the velocity of the photoelectron using the de Broglie equation. 275 ..."
55 minutes ago
·
· in
Calculations with wavelength and frequency
,
Chemistry
Michael
wrote an answer to a
Chemistry
question
C3H8(g)+5O2(g)→3CO2(g)+4H2O(g) for the combustion of one mole of propane is −2219 kJ. What mass of propane would you need to burn to ...
95.04g are required. #C_3H_(8(g))+5O_(2(g))rarr3CO_(2(g))+4H_2O_((g))# #DeltaH_c=-2219kJ# #M_r# of #C_3H_8 = (3 xx 12) +(8 xx1)= 44# So ...
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An hour ago
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· in
Density
,
Chemistry
Jimmy C.
wrote an answer to a
Trigonometry
question
How do you find the second triangle in the ambiguous case?
When given SSA measurements, the ambiguous case asks you to consider two possible triangles: an acute triangle and an obtuse ...
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An hour ago
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· in
The Ambiguous Case
,
Trigonometry
Someone from Zabbar, Malta asked a question in
Chemistry
Find the linearization L(x) of the function at a? Can someone help me with these steps and answer, I got -8x-12, but it shows as wrong. ...
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An hour ago
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· in
The Mole
,
Chemistry
Someone from Ma On Shan, Hong Kong asked a question in
Chemistry
How is hydrogen bonding among water molecules related to the structure of the water molecule?
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2 hours ago
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· in
Hydrogen Bonds
,
Chemistry
Someone from United States asked a question in
Chemistry
Could someone please explain this statement to me " If the energy were not quantized, the emission spectrum would be continuous."? I ...
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2 hours ago
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· in
Atoms and Electromagnetic Spectra
,
Chemistry
Someone from Fredericton, Canada asked a question in
Chemistry
How does a solvent affect the solubility of an ionic compound?
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2 hours ago
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· in
Solvent
,
Chemistry
Meave60
wrote a comment in
Chemistry
A solution of phosphoric acid (H3PO4) is to be reacted with a 8.8 M solution of sodium hydroxide to make sodium phosphate and water. 0.356 ...
"Fixed formatting."
2 hours ago
·
· in
Dilution Calculations
,
Chemistry
Meave60
updated the answer to a
Chemistry
question
A solution of phosphoric acid (H3PO4) is to be reacted with a 8.8 M solution of sodium hydroxide to make sodium phosphate and water. 0.356 ...
[Molarity](http://socratic.org/chemistry/solutions-and-their-behavior/molarity) of Phosphoric solution is 6.70 M The chemical equation ...
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2 hours ago
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· in
Dilution Calculations
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Chemistry
Someone from Silver Spring, United States asked a question in
Chemistry
What are some common mistakes students make with Hydrogen bonds?
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3 hours ago
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· in
Hydrogen Bonds
,
Chemistry
Someone from Christchurch, New Zealand asked a question in
Chemistry
How does bond dissociation affect carbon compounds?
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3 hours ago
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· in
Solvation and Dissociation
,
Chemistry
Meave60
wrote a comment in
Chemistry
What is the oxidation state of chromium in the dichromate ion, Cr2O7 (2-)?
"Fixed formatting."
3 hours ago
·
· in
Oxidation Numbers
,
Chemistry
Meave60
updated the answer to a
Chemistry
question
What is the oxidation state of chromium in the dichromate ion, Cr2O7 (2-)?
Oxidation number (O.N.) of Cr --> Let O.N. of Cr be x. and O.N. of oxygen is -2. The sum of the oxidation states in an ion must add up to ...
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3 hours ago
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· in
Oxidation Numbers
,
Chemistry
Manish Bhardwaj
wrote an answer to a
Chemistry
question
How can I draw a reaction coordinate in a potential energy diagram?
The diagram, at the bottom, shows a graph (purple line) of chemical potential energy (vertical axis) versus a "reaction coordinate" ...
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3 hours ago
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· in
Potential Energy Diagrams
,
Chemistry
Manish Bhardwaj
wrote an answer to a
Chemistry
question
Why is the oxidation state of noble gas zero?
The outer most shell of noble gasses are complete therefore Oxidation no. of noble gasses is zero and don't react with other ...
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3 hours ago
·
· in
Oxidation Numbers
,
Chemistry
Manish Bhardwaj
wrote an answer to a
Chemistry
question
What is the oxidation state of chromium in the dichromate ion, Cr2O7 (2-)?
Oxidation number (O.N.) of Cr --> Let O.N. of Cr be x. and O.N. of oxygen is -2. The sum of the oxidation states in an ion must add up to ...
(more)
3 hours ago
·
· in
Oxidation Numbers
,
Chemistry
lamin
asked a question in
Physics
Who can explain colision // impuls // momentume in one and two dimension if any one can please intruduce briefly for me with exsmples ...
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4 hours ago
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· in
Displacement and Velocity
,
Physics
Bens'n Third
wrote an answer to a
Chemistry
question
How to calculate the maximum kinetic energy of photo emitted electrons if uv radiation has a wavelength of 275 nm?
Kinetic Energy=3.18660034 times 10^-42 J We first find the velocity of photo emitted electrons using the ...
(more)
5 hours ago
·
· in
Calculations with wavelength and frequency
,
Chemistry
S
wrote a comment in
Algebra
Han drove 1 hour longer than Ian at an average speed 5 miles per hour faster than Ian. Jan drove 2 hours longer than Ian at an average ...
"Thanks but can you leave an explanation also? :)"
5 hours ago
·
· in
Words that Describe Patterns
,
Algebra
776645
asked a question in
Chemistry
How many Botulism toxin molecules are sufficient to kill one single human cells?
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6 hours ago
·
· in
The Mole
,
Chemistry
Someone from United States asked a question in
Chemistry
How can I calculate viscosity of water at different temperatures?
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6 hours ago
·
· in
Phases of Matter
,
Chemistry
Someone from Chicago, United States asked a question in
Chemistry
What is an example of a Ion-dipole forces practice problem?
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6 hours ago
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· in
Intermolecular Bonds
,
Chemistry
lol
wrote an answer to a
Chemistry
question
Which elements are the most crucial on earth and why?
#O_2# - #O_2# which is necessary for life as it is what we brethe is the most important **C** - carbon being an important non - metal ...
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7 hours ago
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· in
Elements
,
Chemistry
Bens'n Third
wrote an answer to a
Algebra
question
How do you express #\frac{3}{5}# as a percent?
**You multiply the whole equation by 100** In this case ; 3/5.100 will give the result of 60% Hope this helped:)
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7 hours ago
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· in
Conversion of Decimals, Fractions, and Percent
,
Algebra
Someone from Halifax, Canada asked a question in
Algebra
What is an example of long division of polynomials?
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8 hours ago
·
· in
Division of Polynomials
,
Algebra
Someone from Abu Dhabi, United Arab Emirates asked a question in
Algebra
Are all absolute value inequalities going to turn into compound inequalities?
Answer question
8 hours ago
·
· in
Absolute Value Inequalities
,
Algebra
Wataru
wrote an answer to a
Algebra
question
How do you solve and graph #\frac{x}{5} > - \frac{3}{10}#?
#{x}/{5} > -3/10# by multiplying by #5#, #=> x > - 3/2#, whose graph looks like: ![enter image source ...
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8 hours ago
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· in
Inequalities with Multiplication and Division
,
Algebra
Wataru
wrote an answer to a
Algebra
question
How do you calculate combinations of 10 numbers?
If #r# numbers are chosen, then the number of all combinations can be found by #C(10,r)={P(10,r)}/{r!}={10 cdot 9 cdot cdots cdot ...
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8 hours ago
·
· in
Probability and Combinations
,
Algebra
lol
wrote an answer to a
Chemistry
question
How do you write the Chemical Symbols of elements?
you just have to know them like i know that carbon symbol is C SO symbol of carbon is C
(more)
8 hours ago
·
lol liked this.
· in
Review of Elements and Compounds
,
Chemistry
Wataru
wrote an answer to a
Algebra
question
What is the best method of determining the cost of downloading 26 movies, if it cost $2.25 to download 2 movies?
Since it costs $2.25 to download a pair of movies, and a total of #26 divide 2=13# pairs of movies are downloaded, the total cost ...
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9 hours ago
·
· in
Problem-Solving Models
,
Algebra
Wataru
wrote an answer to a
Algebra
question
Why is the slope of a horizontal line is zero?
Remember that the [slope](http://socratic.org/algebra/graphs-of-linear-equations-and-functions/slope) of a line is defined ...
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9 hours ago
·
· in
Slope
,
Algebra
Bens'n Third
wrote an answer to a
Chemistry
question
First law of thermodynamics?
The first law of thermodynamics is a law that states that energy cannot be created nor destroyed,but can only be changed from one form to ...
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9 hours ago
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· in
Charles' Law
,
Chemistry
Denise Granger
asked a question in
Chemistry
What is a polyatomic ion?
Answer question
10 hours ago
·
· in
Polyatomic Ions
,
Chemistry
Someone from Suri, India asked a question in
Algebra
Why do you write functions to describe real life situations?
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11 hours ago
·
· in
Functions that Describe Situations
,
Algebra
Wataru
wrote an answer to a
Algebra
question
If the mean of nine numbers is 105, what is the sum of the numbers?
#"(Average)"={"(Sum)"}/{9}=105# by multiplying by 9, #"(Sum)"=105\times 9=945# *** I hope that this was helpful.
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11 hours ago
·
· in
Measures of Central Tendency and Dispersion
,
Algebra
Geet
asked a question in
Physics
Can the gravitational force between any two bodies, ever be repulsive? OR YOU CAN SAY can gravity be repulsive in nature?
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12 hours ago
·
· in
Defining Force
,
Physics
Akshay D.
wrote an answer to a
Trigonometry
question
How do you solve #sin 4x + sin 2x = 0# using the product and sum formulas?
#\Rightarrow\sin 2(2x) + \sin 2x=0# #\Rightarrow 2\sin 2x\cos 2x + \sin 2x = 0# #\Rightarrow \sin 2x(2\cos 2x + 1)=0# Case 1: #\sin 2x = ...
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16 hours ago
·
· in
Products, Sums, Linear Combinations, and Applications
,
Trigonometry
Osmium-186
wrote a comment in
Chemistry
The total pressure in an 10.8L automobile tire is 45.0psi at 19.0∘C. How much does the pressure in the tire rise if it warms to a ...
"Haha, I'm glad to hear that Meave. And thanks for the info as well! I wish you both a grand Thanksgiving!"
17 hours ago
·
· in
Combined Gas Law
,
Chemistry
BH
wrote an answer to a
Algebra
question
How do you graph #y=1/2#?
Follow this link. You may find it ...
(more)
19 hours ago
·
· in
Horizontal and Vertical Line Graphs
,
Algebra
Someone from Simi Valley, United States asked a question in
Algebra
What is a perfect square binomial and how do you find the product?
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19 hours ago
·
· in
Special Products of Polynomials
,
Algebra
Someone from Oxford, United States asked a question in
Algebra
How many kinds of solutions are there?
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19 hours ago
·
· in
Consistent and Inconsistent Linear Systems
,
Algebra
Someone from Woodmere, United States asked a question in
Chemistry
What is electron affinity.......?
Answer question
19 hours ago
·
· in
Periodic Trends in Electron Affinity
,
Chemistry
Judy O.
wrote an answer to a
Biology
question
What are some examples of muscles?
There are three types of muscles. There are ones that you have to think about before they will move. These are called voluntary muscles. ...
(more)
19 hours ago
·
· in
Muscles and Motion
,
Biology
BH
wrote an answer to a
Algebra
question
How do you spot an outlier?
If there is a group of numbers or samples, and then there is one distinct number/sample that is farther out than the others, then it is the ...
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19 hours ago
·
· in
Fitting Lines to Data
,
Algebra
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