I NEED HELP!!!!! 14 points and brainliest to whoever answers correctly first!!!

1 answer:

4 0

That is a typical neutralization reaction of an strong acid (the first proton of the sulfuric acid) and a strong base (sodium hydroxide ). Usually in a neutralization reaction the products of the reactions are salt (sodium sulfate) and water

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What charge does nitrogen form when it satisfies the octet rule?

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Explanation:

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100.0 g water cools from 85.0°C to 20.0°C. If the specific heat of water is 4.18 J/g°C, calculate the change in energy.

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Answer:

-27.2 kJ

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We can use the heat-transfer formula. Recall that:

$\displaystyle q = mC\Delta T$

Where m is the mass, C is the substance's specific heat, and ΔT is the change in temperature.

Hence substitute:

$\displaystyle \begin{aligned} q & = (100.0\text{ g})\left(\frac{4.18\text{ J}}{\text{g-$^\circ$C}}\right)(20.0\text{ $^\circ$C} - 85.0\text{ $^\circ$C}) \\ \\ & =(100.0\text{ g})\left(\frac{4.18\text{ J}}{\text{g-$^\circ$C}}\right)(-65.0\text{ $^\circ$C}) \\ \\ & = -2.72\times 10^4\text{ J} = -27.2\text{ kJ}\end{aligned}$

Therefore, the cooling of the water released about 27.2 kJ of heat.

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