Answer:
answer is 76
Explanation:
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Answer:
0.5
Explanation:
because equilibrium constant is products over reactants
substituting values will give you 0.5
Answer:
140. J/g*K
Explanation:
To find the specific heat capacity, you need to use the following equation:
Q = mcΔT
In this equation,
-----> Q = energy/heat (J)
-----> m = mass (g)
-----> c = specific heat (J/mole*K)
-----> ΔT = change in temperature (K)
Before you can use the equation above, you need to (1) convert kg to grams, then (2) convert grams to moles (via molar mass), and then (3) convert Celsius to Kelvin. The final answer should have 3 significant figures.
1.11 kg C₄H₈O₂ x 1,000 = 1110 g
Molar Mass (C₄H₈O₂): 4(12.01 g/mol) + 8(1.008 g/mol) + 2(16.00 g/mol)
Molar Mass (C₄H₈O₂): 88.104 g/mol
1110 grams C₄H₈O₂ 1 mole
------------------------------ x ------------------------- = 12.6 moles C₄H₈O₂
88.104 grams
34.5 °C + 273 = 307.5 K
52.3 °C + 273 = 325.3 K
Q = mcΔT <----- Equation
3.14 x 10⁴ J = (12.6 moles)c(325.3 K - 307.5 K) <----- Insert values
3.14 x 10⁴ J = (12.6 moles)c(17.8) <----- Subtract
3.14 x 10⁴ J = (224.28)c <----- Multiply 12.6 and 17.8
140. = c <----- Divide both sides by 224.28
**this answer may be slightly off due to using different molar masses/Kelvin conversions**
Answer:
C
Explanation:
A chemical change is which cannot be reversed and produced entirely new products. This is outrightly different from a physical change in which no new products are formed and may simply just involve a phase change.
Now let’s examine each case individually:
A is a physical change. We can physically separate the gold from the coin
B is a physical change. A puddle of water evaporating is just a case of a phase change from liquid to gaseous state. We still have the same water, the only difference is the form in which the water is
C is a chemical change.
For paint to fade, there is supposedly an underlying chemical reaction that would have occurred to make the paint lose its original colour. This is essentially what makes paint fading a chemical change as it cannot be reversed itself. Another coat of paint would be applied which in itself would in the course of time lose its colors too
D is a physical change too, it is just a case of phase change from the liquid state to the solid state
Answer:
B. Apex has more channels for the money than some other streaming services.
Explanation:
Just did Quiz on Edgenuity
