A is a solution containing 0.095 mol/dm3 of trioxonirate(v) acid solution.

B contains 13.5g if X2 CO3 1OH2 per dm3. using the table above as the reading from your titration, calculation.
1. concentration of B in mol/dm3.
2. molar mass of X2 CO3 1OH20.
3. per contage by mass of X in X2 CO3 1OH2O.
Note: volume of base = 25cm3?

X2CO3.10H2O

Percentage by mass of x in X2CO3.10H2O

The answer and the solution

To find the answers to the questions, we'll follow some steps using the given information and formulas.

1. Concentration of B in mol/dm3:
Given that the volume of the base is 25cm3, we need to convert it to dm3 by dividing by 1000: 25cm3 ÷ 1000 = 0.025dm3.

The concentration of B can be found using the formula:
Concentration (mol/dm3) = Number of moles / Volume (dm3)

Since we are given the mass of X2 CO3 1OH2 in grams, we first need to convert it to moles. To do this, we divide the mass by the molar mass of X2 CO3 1OH2.

2. Molar mass of X2 CO3 1OH20:
To find the molar mass of a compound, we add up the atomic masses of each element present in the compound. Here, we have X2 CO3 1OH2.

The atomic masses of the elements are as follows:
X: Atomic mass unknown
C: 12.01 g/mol
O: 16.00 g/mol
H: 1.01 g/mol

To calculate the molar mass of X2 CO3 1OH2, we need to determine the atomic mass of X. Unfortunately, the information provided does not specify the atomic mass of X, so we cannot determine the molar mass without this information.

3. Percent composition by mass of X in X2 CO3 1OH2O:
The percent composition by mass of an element in a compound can be calculated using the formula:

Percent composition = (Mass of X in the compound / Molar mass of the compound) × 100%

Again, without information regarding the molar mass of X, we cannot calculate the percent composition of X in X2 CO3 1OH2O.

Overall, we can only answer the first question regarding the concentration of B if we have the molar mass of X or the atomic mass of X. Without that information, we cannot fully complete the calculations for questions 2 and 3.

You need to repost this with taking care with the language.

1. What table above?
2. What is a titration calculation?
3. Did you mean X2CO3.10H2 or X2CO3.10H2O?
4. What is the meaning of "per contage"?