These readings suggest the balance is: precise accurate neither accurate nor precise accurate and precise
Answer:
32.0 kJ
General Formulas and Concepts:
<u>Thermochemistry</u>
Specific Heat Formula: q = mcΔT
- q is heat (in J)
- m is mass (in g)
- c is specific heat (in J/g °C)
- ΔT is change in temperature (in °C)
Explanation:
<u>Step 1: Define</u>
<em>Identify variables</em>
[Given] <em>m</em> = 1.00 g
[Given] ΔT = 1.48 °C
[Given] <em>c</em> = 21.6 kJ/g °C
[Solve] <em>q</em>
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<u>Step 2: Find Heat</u>
- Substitute in variables [Specific Heat Formula]: q = (1.00 g)(21.6 kJ/g °C)(1.48 °C)
- Multiply [Cancel out units]: q = (21.6 kJ/°C)(1.48 °C)
- Multiply [Cancel out units]: q = 31.968 kJ
<u>Step 3: Check</u>
<em>Follow sig fig rules and round. We are given 3 sig figs.</em>
31.968 kJ ≈ 32.0 kJ
Venus and because the water put there becomes traps as much heat as possible with the surface temperature rising
Sulfur is a non-metal, being in the third period, in group 6
Answer:
K = 1.69M
Explanation:
For the reaction:
2NH₃(g) ⇄ N₂(g) + 3H₂(g)
K is defined as:
k = [N₂] [H₂]³ / [NH₃]² <em>(1)</em>
Molarity in equilibrium for each specie is:
NH₃(g): 2.0mol - 2x = 1.0mol/1L = 1M → X = 0.5mol
N₂(g): X = 0.5mol/1L = 0.5M
H₂(g): 3X = 1.5mol/1L = 1.5M
Replacing:
k = [0.5] [1.5]³ / [1]²
<em>k = 1.69M</em>
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I hope it helps!