Answer:
1. Fe(NO3)3 is C. Chemical formula
2. Manganese Sulphate is C. Name
3. Zn is C. Symbol
Hope this helps!
1) Balanced chemical equation:
<span>C(s)+O2(g)→CO2(g), δh∘rxn=−393.5kj
2) Meaning: When burned 1 mol of C(s), this is solid pure charcoal, produces 1 mol of CO2 and liberates 393.5 kJ of heat
Ratio: 1 mol CO2 : 393.5 kJ
3) Proportion:
1 mol CO2 x
--------------- = -------------------
393.5 kJ 4.6 * 10^2 kJ
4) Solve for x:
x = 460 kJ * 1 mol CO2 / 393.5 kJ = 1.1690 mol CO2
5) convert moles to grams
mass in grams = number of moles * molar mass
mass in grams = 1.1690 mol * 44.01 g / mol = 51.4 g
Answer: 51.4 g
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Answer:
Because the distance is too far to count with any other way
Explanation:
Thank you for posting your question here. You just provide a situation, I assume below are the questions:
<span>1. What is the current in the heating element?
</span>
<span>2.What is the resistance of the dryer's heating element at its operating temperature?
</span>
Below are the answers:
1. <span>P = V∙I </span>
<span>I = P/V = 4100 W / 240 V = 17.08 A
</span>
2. <span>Ohm's law: </span>
<span>V = R∙I
</span><span>R = V/I = 240 V / 17.083 A = 14.05 Ω</span>
