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Ivahew [28]
3 years ago
8

Use the oxidation rule to determine the oxidation number of carbon in H2CO3

Chemistry
1 answer:
torisob [31]3 years ago
3 0
In sure u will do great and the answer will be right
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Compound B contains 92.31% carbon and 7.69% hydrogen. Determine the empirical formula of B​
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Formation of ionic bond is affected by​
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Ionization energy, electronegativity, and lattice energy are the factors that influence the formation of ionic bonds of elements.

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What is the volume of 0.200 mol of an ideal gas at 200. kPa and 400. K?
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Which of these is an example of a physical change?
vladimir2022 [97]

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2 years ago
How much energy (in J) is lost when a sample of iron with a mass of 26.4 g cools from 74.0 ∘C to 26.0 ∘C?
Greeley [361]

Answer:

Q=-526.6J

Explanation:

Hello,

In this case, for the computation of the energy loss when the cooling process is carried out, we use the shown below equation:

Q=mCp\Delta T

Whereas we need the mass, specific heat and change in temperature of iron within the process. Thus, the only value we need is the specific heat that is 0.444 J/(g°C), therefore, we compute the heat loss:

Q=26.4g*0.444\frac{J}{g\°C}*(26.0\°C-74.0\°C)\\ \\Q=-526.6J

Negative sign points out the loss due to the cooling.

Regards.

8 0
3 years ago
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