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2 years ago

Brodationnumber of oxygen in F2O is.

Chemistry

1 answer:

larisa86 [58]2 years ago

4 0

Answer:

Oxidation number of F2O = 0−(−1×2)

State of oxygen will be=+2

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HELP 20 POINTS <br>A photon has a wavelength of 366 nm. What is the frequency of this photon?

den301095 [7]

Answer:

9. 8.2x10¹⁴ Hz

Explanation:

Wavelength λ = 366 nm

Formula: Frequency = C / λ

To find the wavelength in m,

1 nm = 1.0x10⁻⁹ m

So, 366 nm = ?

= 3.66x10⁻⁷ m

Frequency = 3.0x10⁸m.s-1 / 3.66x10⁻⁷ m

= 8.2x10¹⁴ s-1

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3 years ago

Calculate the mass percent of H in C3H8O3.<br> %

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Answer:

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2 years ago

Butane (C4 H10(g), Hf = –125.6 kJ/mol) reacts with oxygen to produce carbon dioxide (CO2 , Hf = –393.5 kJ/mol ) and water (H2 O,

WITCHER [35]

Answer: Enthalpy of combustion (per mole) of $C_4H_{10} (g)$ is -2657.5 kJ

Explanation:

The chemical equation for the combustion of butane follows:

$2C_4H_{10}(g)+4O_2(g)\rightarrow 8CO_2(g)+10H_2O(g)$

The equation for the enthalpy change of the above reaction is:

$\Delta H^o_{rxn}=[(8\times \Delta H^o_f_{CO_2(g)})+(10\times \Delta H^o_f_{H_2O(g)})]-[(1\times \Delta H^o_f_{C_4H_{10}(g)})+(4\times \Delta H^o_f_{O_2(g)})]$

We are given:

$\Delta H^o_f_{(C_4H_{10}(g))}=-125.6kJ/mol\\\Delta H^o_f_{(H_2O(g))}=-241.82kJ/mol\\\Delta H^o_f_{(O_2(g))}=0kJ/mol\\\Delta H^o_f_{(CO_2(g))}=-393.5kJ/mol\\\Delta H^o_{rxn}=?$

Putting values in above equation, we get:

$\Delta H^o_{rxn}=[(8\times -393.5)+(10\times -241.82)]-[(2\times -125.6)+(4\times 0)]\\\\\Delta H^o_{rxn}=-5315kJ$

Enthalpy of combustion (per mole) of $C_4H_{10} (g)$ is -2657.5 kJ

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2 years ago

Does temperature stay the same when heat energy increases?

son4ous [18]

Answer:

More energy is required to raise its temperature. Therefore, temperature does not stay the same when heat energy increases.

6 0

2 years ago

Read 2 more answers

Help me due tomorrow :,)

lesya [120]

Zinc displaces copper

It means

Zinc is more reactive than copper

Zinc+Copper sulphate--> Zinc sulphate+Copper

No reaction because

Magnesium is more reactive than zinc

Reaction occurs

Iron is more reactive than copper
Magnesium is more reactive than iron

Order:-

Cu<Fe<Zn<Mg

3 0

2 years ago

Brodationnumber of oxygen in F2O is.​

Brodationnumber of oxygen in F2O is.