answer them please! i need help. the main question is # 1!!! 2. how many atoms are in one particle of aluminum dichromate?3. how many phosphorus atoms are in one particle of calcium phosphate?4. how many total atoms are in one particle of calcium phosphate?PLEASE!! who ever answers all, ill give them best answer a 5 star ratinggg. please!!! THANK YOU!
1) Look at the formula for aluminum nitrate [Al(NO3)3]. The subscript of 3 outside of the parentheses means that you multiply each atom inside the parentheses by 3. Since there is only one nitrogen inside the parentheses, this means that you multiply that by 3. There are a total of 3 nitrogen atoms in each molecule of aluminum nitrate. 2) The formula for aluminum dichromate is Al2(Cr2O7)3. Again, multiply each atom in the parentheses by 3, add them, then add 2 to that number for the aluminum. That's your answer. 3) The formula for calcium phosphate is Ca3(PO4)2. Multiply P by 2. 4) Follow the same steps as in #2, above.
aluminium nitrate Al (NO3)3 so no. of N atoms = 3 . ans NOTE NUMBER OF ATOMS OR MOLECULES IN ANY COMPOUND IS GIVEN BY AVOGADRO'S NUMBERS WHICH = 6.022X 10^23 avogadro's no. is no. of atoms in one gm atomic mass of any element avogadros no. is also no of molecules. present in one gm molar mass of any molecules. e.g. 1 gm hydrogen has = 6.022x10^23 atoms of H 2gm hydrogen has = 6.022x10^23 molecules of H in the same way 16gm of O2 hsa = 6.022x10^23 atoms 32gm O2 has = 6.022x10^23 molecules of oxygen. ANOTHER EXAMPLE;-- 44 gmCO2 has = 6.022x10^23 molecules of CO2 so to know number atoms weight should be given ( particle does not explain wt.
