Question

Mr(AE PO4) =Mr(CaSiO2) =Mr(Na2So4) =​

Answer 1

Ответ:

1. ???

2. 40+28+16*2=100

3. 23*2+32+16*4=142

Answer 2

To calculate the molar mass (Mr) of a compound, you need to add up the atomic masses of all the atoms present in the chemical formula. Here are the atomic masses for the elements involved:

• Atomic mass of A (unknown element) = you haven't provided this information.
• Atomic mass of P (phosphorus) = 30.97 g/mol
• Atomic mass of O (oxygen) = 16.00 g/mol
• Atomic mass of Ca (calcium) = 40.08 g/mol
• Atomic mass of Si (silicon) = 28.09 g/mol
• Atomic mass of Na (sodium) = 22.99 g/mol
• Atomic mass of S (sulfur) = 32.06 g/mol

Now let's calculate the molar masses:

1. Mr(AE PO4) = Mr(A) + Mr(P) + 4 * Mr(O) = Mr(A) + 30.97 + 4 * 16.00 = Mr(A) + 94.97 g/mol

2. Mr(CaSiO2) = Mr(Ca) + Mr(Si) + 2 * Mr(O) = 40.08 + 28.09 + 2 * 16.00 = 40.08 + 28.09 + 32.00 = 100.17 g/mol

3. Mr(Na2SO4) = 2 * Mr(Na) + Mr(S) + 4 * Mr(O) = 2 * 22.99 + 32.06 + 4 * 16.00 = 45.98 + 32.06 + 64.00 = 141.04 g/mol

It seems like you have made a typo or an omission for the first compound (AE PO4) since you did not provide the atomic mass of the element "A". Please provide the missing information to calculate its molar mass. If you have any other questions or additional information, feel free to share!