give the balanced equation for:

Liquid nitric acid decomposes to reddish brown nitrogen dioxide gas, liquid water, and oxygen gas.

the equation i got was
HNO3 --> NO2+ H2O+ O2

is that right? i haven't balanced it yet

Yes. If you wish to include the states, since the problem is worded that way, you could have written

HNO3(l) ==> NO2(g) + H2O(l) + O2(g)

Yes, you are on the right track. However, the equation you provided is not balanced yet. Let's balance it step-by-step.

The balanced equation for the decomposition of liquid nitric acid can be written as:

2 HNO3 → 2 NO2 + H2O + O2

This equation is balanced because there are an equal number of atoms on both sides of the equation.

Yes, you are on the right track with the equation: HNO3 -> NO2 + H2O + O2. However, it is important to balance the equation to ensure that the number of atoms on both sides of the equation is equal.

To balance the equation, you will need to adjust the coefficients in front of the chemical formulas. Here's the balanced equation for the decomposition of nitric acid:

4HNO3 -> 2NO2 + 2H2O + O2

In this balanced equation, you can see that there are 4 nitrogen atoms, 12 hydrogen atoms, 14 oxygen atoms on both sides of the equation. Therefore, the equation is balanced.