I believe the answer is false. It is not safe <span>to heat flammable liquids with a bunsen burner even when it’s done in a fume hood. It is never recommendable to heat liquids that are flammable since it has a very high risk. Hope this answers the question.</span>
Answer: It is important to conduct multiple trials so one can get the best results, additionally, multiple trials with result in minimal errors. Finally it is important to conduct multiple trials because it will show you the actual answer/solution/whatever. If you do something once their may of been a random unknown affect and you would of never knew because you only conducted the experiement once.
Explanation:
Calcium (ca) is iron form elements
Answer:
Explanation
The formula for calculating the enthalpy change of a reaction by using the enthalpies of formation of reactants and products is
CaCO₃(s) ⟶ CaO(s) + CO₂(g)
ΔH°f/kJ·mol⁻¹: -1206.9 -635.1 -393.5
![\begin{array}{rcl}\Delta_{\text{r}}H^{\circ}& = & [(-635.1 + (-393.5)] - (-1206.9)\\& = & -1028.6 +1206.9\\& = & \mathbf{178.3}\\\end{array}\\\text{The enthalpy of decomposition is } \boxed{\textbf{178.3 kJ/mol}}](https://tex.z-dn.net/?f=%5Cbegin%7Barray%7D%7Brcl%7D%5CDelta_%7B%5Ctext%7Br%7D%7DH%5E%7B%5Ccirc%7D%26%20%3D%20%26%20%5B%28-635.1%20%2B%20%28-393.5%29%5D%20-%20%28-1206.9%29%5C%5C%26%20%3D%20%26%20-1028.6%20%2B1206.9%5C%5C%26%20%3D%20%26%20%5Cmathbf%7B178.3%7D%5C%5C%5Cend%7Barray%7D%5C%5C%5Ctext%7BThe%20enthalpy%20of%20decomposition%20is%20%7D%20%5Cboxed%7B%5Ctextbf%7B178.3%20kJ%2Fmol%7D%7D)
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