Answer:
We need 2.02 grams of NH3
Explanation:
Step 1: Data given
Mass of methanol = 475 grams
Molality of the solution = 0.250 M
Molar mass of NH3 =17.03 g/mol
Molar mass of = methanol = 32.04g/mol
Step 2: Calculate moles NH3
Molality = 0.250 m = mol NH3 / 0.475 kg
moles NH3 = 0.250 molal * 0.475 kg
Moles NH3 = 0.11875 moles
Step 3: Calculate the mass of NH3
Mass NH3 = moles NH3 * molar mass NH3
Mass NH3 = 0.11875 mol * 17.03 g/mol
Mass NH3 = 2.02 grams
We need 2.02 grams of NH3
180000000000000000000 atoms
It’s the same as when magnesium reacts with liquid water, only faster:
Mg + 2H₂O → MgO + H₂.
The difference is that in water, the reaction has a second step, converting MgO to Mg(OH)₂.
<h2>HOPE IT HELPS♥</h2>
Answer:
No streak of light will appear.
Reason I given below.
Explanation:
No streak of light will be seen.
This is because as it falls to the moon, the gravitational pull plus the dense atmosphere which was necessary to produce friction when it fell to the earth are not present in this case and as such the whole meteor is not burnt like it did when it fell to the earth.
