# Problem: A phosphorus compound that contains 13.07% phosphorus by mass has the formula X3P2. Identify the element X. Express your answer as a chemical symbol.

###### FREE Expert Solution
90% (441 ratings)
###### FREE Expert Solution

We’re being asked to determine the element in the phosphorus compound with a formula of X3P2.

We are given the mass percent of phosphorus which is 13.7%.

Recall the mass percent formula:

We’re going to determine the identity of X using the following steps:

Step 1. Determine the mass of P and mass of X.
Step 2. Calculate moles of X.
Step 3. Calculate the molar mass of X.
Step 4. Determine the identity of X.

Step 1. Determine the mass of P and mass of X.

90% (441 ratings) ###### Problem Details

A phosphorus compound that contains 13.07% phosphorus by mass has the formula X3P2

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Mass Percent concept. You can view video lessons to learn Mass Percent. Or if you need more Mass Percent practice, you can also practice Mass Percent practice problems.

What is the difficulty of this problem?

Our tutors rated the difficulty ofA phosphorus compound that contains 13.07% phosphorus by mas...as low difficulty.

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Based on our data, we think this problem is relevant for Professor N/A's class at Ryerson University.