Answer:
3132 is the answer
Explanation:
3BaCl2 + Al2S3 → 3BaS + 2AlCl3
In some atoms<span>, the required energy is not sturdy enough to hold the </span>nucleus<span> together, and the </span>nuclei<span> of these </span>atoms<span> are said to be </span>fractionable<span>. </span>Weak atoms will<span> lose neutrons and protons as they attempt to become </span>stable<span>. In this way, atoms need that required energy.
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Answer:
47530 is the nearest 10 to 47526
Answer:
The ΔH of the reaction is + 12.45 KJ/mol
Explanation:
Mass of water= 100ml = 100g. (You should always assume 1cm3 of water as 1g)
heat capacity of water = 4.18 Jk-1 Mol-1
Change in temperature = (19.86 - 25.00) = -5.14 K (This is an endothermic reaction because of the fall in temperature)
Molar mass of NaHCO3 = 84 g/mol
Mole of NaHCO3 = 14.5 / 84 = 0.173 mol
Step 1 : Calculate the heat energy (Q) lost by the water.
Q = M x C x ΔT
Q = -100 x 4.18 x (-5.14)
Q = 2148.5 joules
Q = 2.1485 K J
Step 2: Calculating the ΔH of the reaction?
ΔH = Q / number of moles of NaHCO3
ΔH = 2.1485 / 0.173
ΔH = 12.42 KJ/mol
C. Protons
Protons are subatomic particles found in the nucleus and carry positive electrical charge.
