Answer:
Mass = 3.752 g
Explanation:
Given data:
Number of moles of Li = 0.536 mol
Mass of N₂ needed = ?
Solution:
Chemical equation:
2Li + N₂ → 2LiN
Now we we will compare the moles of Li and N₂.
Li : N₂
2 : 1
0.536 : 1/2×0.536 = 0.268 mol
Mass of N₂
Mass = number of moles × molar mass
Mass = 0.268 mol × 14 g/mol
Mass = 3.752 g
Soft - Sponge
Metal - Iron
Transparent - Glass
Soluble - Salt
Opaque - Cardboard
Answer: it is B and D light
Explanation: when a spark happens that is changing and bubbles is also changing
The physical process of evaporation involves the heat absorbing and the status of the substance changing. The status of this substance changes form liquid to gas.
Answer:
The first seven metals in the periodic table are lithium, beryllium, sodium, magnesium, aluminium, potassium and calcium, known collectively as the “lightest metals”
Explanation:
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