Homework Statement
This is my equation. I needed to balance it in an acidic solution.
H2O2(aq)---->H2O(l)
Homework Equations
I know that you should balance oxygen using H2O & hydrogen using H+.
I am confused on how you balance the ionic charges.
The Attempt at a Solution...
Homework Statement
Given that 24.0 mL of .170M sodium iodide reacts with .209M mercury (II) nitrate solution according to the below equation (it is balanced).
What volume of Hg(NO3)2 is required for complete precipitation?
Homework Equations
Hg(NO3)2+2NaI ----> HgI2+ 2NaNO3
The...
The ideal gas law equation
Ok I think I might have the answer this is what I cam up with but I am not sure...
Here it is:
25mL/248K = X/298K
Which equals 30.04mL (I still don't believe this is right)
Homework Statement
If oxygen gas occupies 25mL at -25 'C and 65 mm Hg.
What is the volume at 25 'C and 350 mmHg?Homework Equations
P1+P2+P3=Ptotal
The Attempt at a Solution
I am really not sure how to do this :(
I think maybe I figured it out. Please see below!
Homework Statement
How many millilitres of oxygen gas are released from heating 5.00 grams of calcium chlorate?Homework Equations
Ca(ClO3)2→CaCl2+3O2
Ca(ClO3)2 =207.7g
CaCl2=110.98g
O2=22.4 g/L
Mole ratio= 3mol O2/1mol Ca(Clo3)2
The Attempt at a Solution
This is what I have but it is not...
Homework Statement
Calculate the volume of .250 g of helium at STP.
This seems so simple but I keep getting the wrong answers.
If someone could walk me through how to do this problem so I will know how to do them for our test. Our book doesn't give a good example.Homework Equations
I know...
(this is my first post I hope this is the right)
Ok, so I am confused when given a problem where I have to find the missing final or initial temperature.
Here is an example of one such problem that confuses me:
A 68.2 g sample of copper at 21.2 °C is heated with 75.0 J. The specific...