Answer is in the image attached hope this helps!
Answer:
1.Most metal oxides are insoluble in water but some of these (e.g. Na2O.
Explanation:
2.: (i) A hissing sound is observed.
1.ii) The mixture starts boiling and lime water is obtained.
Answer:
Metre
Explanation:
the SI unit of length is <em>Me</em><em>tre</em>
Answer:
2024.1g
Explanation:
Given parameters:
Number of moles of Na = 34.6moles
Unknown:
Mass of product formed = ?
Solution:
We must first establish the reaction equation as shown below;
2Na + Cl₂ → 2NaCl
We solve from the known to the unknown specie;
2 moles of Na produced 2 moles of NaCl
34.6moles of Na will produce 34.6moles of NaCl
Now to find the mass of NaCl;
mass = number of moles x molar mass = 34.6 x (23 + 35.5) = 2024.1g
The ostrich runs 21 N then goes back by 25 S
The displacement is -4 S
21 - 25 = -4