The complete chemical reaction of aqueous Sodium sulfate and aqueous Barium nitrate is
The right side and the left side of the reaction have equal number of elements, therefore it is balanced.
Explanation:
MWQ means the minimum weighable quantity.
Mathematically, MWQ =
or, MWQ =
It is given that sensitivity is 4.5 mg and maximum permitted error is 3.6%.
Therefore, fraction error = = 0.036
Hence, we will calculate MWQ as follows.
MWQ =
=
= 125 mg
Thus, we can conclude that the MWQ of the given balance is 125 mg.
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Example:
Science is - structure of a leaf.
Technology is - microscope.
Hope I helped!
The balanced equation is:
2NaCl + 2 H2o → 2 NaOH + Cl2 + H2
1- we put 2 NaCl to balance Cl2 on the other side.
2- we put 2 NaOH to balance Na
3- We put 2 H2O to balance H & O on the to sides
Answer:
T₂ = 19.95°C
Explanation:
From the law of conservation of energy:
where,
mc = mass of copper = 37.2 g
Cc = specific heat of copper = 0.385 J/g.°C
mw = mass of water = 188 g
Cw = specific heat of water = 4.184 J/g.°C
ΔTc = Change in temperature of copper = 99.8°C - T₂
ΔTw = Change in temperature of water = T₂ - 18.5°C
T₂ = Final Temperature at Equilibrium = ?
Therefore,
<u>T₂ = 19.95°C</u>