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andre [41]
3 years ago
10

sodium is a highly reactive element which characteristic of sodium is most responsible for its reactivity

Chemistry
2 answers:
vlada-n [284]3 years ago
8 0

Answer:

The answer is B

Explanation:

AlexFokin [52]3 years ago
3 0
B) It's atomic mass is 22.990
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The whiye pigment TiO2 is prepared by the reaction of titanium tetrachloride, TiCl4, with water vapor in the gas phase:
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Answer:

\boxed{\text{62.1 kJ}}

Explanation:

The formula for calculating the enthalpy change of a reaction by using the enthalpies of formation of reactants and products is

\Delta_{\text{r}}H^{\circ} = \sum \Delta_{\text{f}} H^{\circ} (\text{products}) - \sum\Delta_{\text{f}}H^{\circ} (\text{reactants})

                          TiCl₄(g) + 2H₂O(g) ⟶ TiO₂(s) + 4HCl(g)

ΔH°f/kJ·mol⁻¹:    -763.2     -241.828     -939.7    -92.307

\begin{array}{rcl}\Delta_{\text{r}}H^{\circ} & = & [-939.7 + 4(-92.307)] - [-763.2 + 2(-241.828)\\& = & [-939.7 - 369.228] - [-763.2 - 483.656]\\& = & -1308.928 + 1246.856\\& = & \mathbf{-62.1}\\\end{array}\\\text{The amount of heat evolved is } \boxed{\textbf{62.1 kJ}}

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3 years ago
The table gives the solubility of each substance in 100
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Answer:

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Manual says that he has reduce the amount of thermal energy in a cup of hot chocolate without lowering the temperature.How is th
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How many grams of chromium are in 2.0 x 1024 atoms
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