3 years ago

In the modern periodic table when elements are arranged according to their atomic

1 answer:

9966 [12]3 years ago

3 0

In the modern periodic table when elements are arranged according to their atomic number.

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lapo4ka [179]

The answer would be liquid.

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3 years ago

Marat540 [252]

1. D
2. C
3. F
4. E
5. A
6. B

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3 years ago

murzikaleks [220]

Electron

~~~hope this helps~~~
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~davatar~

7 0

3 years ago

Masteriza [31]

Answer:

hydrogen dioxide

Explanation:

3 0

4 years ago

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]

$C(s) + O_2(g)\rightarrow CO2(g), \Delta H^o_{2} = -340 kJ$ ..[2]

$H_2(g) + \frac{1}{2}O_2(g)\rightarrow H_2O(l) ,\Delta H^o_{3} = -211 kJ$ ..[3]

$2C(s) + H_2(g)\rightarrow C_2H_2(g),\Delta H^o_{4} =?$ ..[4]

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

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

$\Delta H^o_{4}=2\times (-340 kJ) + (-211 kJ) - (-1,123 kJ)$

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

The enthalpy for given reaction is 232 kilo Joules.

5 0

3 years ago