2 years ago

Lithium is a metal.

Chemistry

1 answer:

Zina [86]2 years ago

8 0

Answer:

Explanation:

lithium: lithium is very soft, silvery metal. melting point is 180.54°C and boiling point is 1,335°C. it's density is 0.534 grams per cu.cm. oxygen: oxygen is colourless , odorless , tasteless gas

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ira [324]

M = 22.8 g
V = 14.7 mL
ρ - ?

ρ = m/V
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2 years ago

Calculate the enthalpy for this reaction: 2C(s) + H2(g) ---> C2H2(g) ΔH° = ??? kJ Given the following thermochemical equation

nordsb [41]

Answer:

The enthalpy for given reaction is 232 kilo Joules.

Explanation:

$C_2H_2(g) + \frac{5}{2}O_2(g)\rightarrow 2CO_2(g) + H_2O(l), \Delta H^o_{1} = -1,123 kJ$ ...[1]

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2 × [2] + [3] - [1] ( Using Hess's law)

$\Delta H^o_{4}=2\times \Delta H^o_{2}+\Delta H^o_{3} - \Delta H^o_{1}$

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$\Delta H^o_{4}=232 kJ$

The enthalpy for given reaction is 232 kilo Joules.

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nadya68 [22]

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Answer: 44

Explanation: Because its easy

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alexdok [17]

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