Answer: A salad is a mixture but, h2o is a mixture of molecules
Explanation: hope it helps
Answer:
Explanation
we know that
Δ H= m C ΔT
where
ΔH = change in enthalpy (j)
m=mass of the given substance which in this case is water
C= specific heat capacity
ΔT=change in temperature
we know that given mass of water =29.6 g
and ΔT=T2-T1=125-(-55)=180
specific heat capacity of water is 4.18 j/g °C
therefore ΔH= 29.6 g*4.18 j/g °C* 180 °C
so ΔH=22271.04 j
Answer:
47.99g
Explanation:
The first step st have a balanced chemical reaction equation.
This is given as;
2Fe + 3Cl2 --> 2FeCl3
From the equation,
2 moles of Fe would react with 3 moles of Cl2.
I mole of Fe = 55.8 (3 s.f) (Molar mass of Fe)
2 mole = 2 * 55.8 = 111.6 g
1 mole of gaas occupies 22.4dm3
3 moles = 3 * 22.4 = 67.2 dm3
1dm3 = 1L
This means 116g would consume 67.2L
Xg would consume 27.8L
x * 67.2 = 27.8 * 116
x = 3224.8/67.2
x = 47.99g (2 d.p)
Answer:
Often a given reaction can be placed in two or even three categories, including gas-forming and precipitation reactions. Many reactions produce a gas such as carbon dioxide, hydrogen sulfide, ammonia, or sulfur dioxide.
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