Question

Mr(NaH)=Mr(Cr2O3)=Mr(AIPO4)=

Answer 1

Думаю так правильно

Answer 2

It seems like you're trying to equate the molar mass (Mr) of different compounds: sodium hydride (NaH), chromium(III) oxide (Cr2O3), and aluminum phosphate (AlPO4). Let's calculate the molar masses of these compounds:

1. Sodium Hydride (NaH): Sodium (Na) has a molar mass of approximately 22.99 g/mol. Hydrogen (H) has a molar mass of approximately 1.01 g/mol. So, the molar mass of NaH = 22.99 + 1.01 = 24.00 g/mol.

2. Chromium(III) Oxide (Cr2O3): Chromium (Cr) has a molar mass of approximately 51.996 g/mol. Oxygen (O) has a molar mass of approximately 16.00 g/mol. So, the molar mass of Cr2O3 = (2 * 51.996) + (3 * 16.00) = 152.00 g/mol.

3. Aluminum Phosphate (AlPO4): Aluminum (Al) has a molar mass of approximately 26.98 g/mol. Phosphorus (P) has a molar mass of approximately 30.97 g/mol. Oxygen (O) has a molar mass of approximately 16.00 g/mol. So, the molar mass of AlPO4 = 26.98 + 30.97 + (4 * 16.00) = 121.96 g/mol.

Therefore, the molar masses are:

• Mr(NaH) = 24.00 g/mol
• Mr(Cr2O3) = 152.00 g/mol
• Mr(AlPO4) = 121.96 g/mol

As you can see, the molar masses of these compounds are not equal. If you had a specific context or question related to these molar masses, please provide more information, and I'd be happy to help!