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Oliga [24]
3 years ago
11

What is the oxidation state for compounds?

Chemistry
1 answer:
zaharov [31]3 years ago
5 0

The oxidation state of any element such as Fe, H2, O2, P4, S8 is zero (0). The oxidation state of oxygen in its compounds is -2, except for peroxides like H2O2, and Na2O2, in which the oxidation state for O is -1.

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How many moles of methane are required to produce 22g co2 after combustion
Korvikt [17]
(Not guaranteed correct answer)
Balanced equation for complete combustion of methane would be:
CH4 + 2O2 --> CO2 + 2H20

Amount of CO2:
22g / [12.0+2(16.0)]
= 0.5mol

Mole ratio can be represented as
CH4 = CO2

So 0.5 mol of CO2 = 0.5 mol of CH4 ??
8 0
4 years ago
How to find an elements atomic weight
Tju [1.3M]
To calculate<span> the average </span>atomic mass<span>, multiply the fraction by the </span>mass<span> number for each isotope, then add them together.</span>
3 0
3 years ago
The line spectrum of lithium has a red line at 670.8 nm. Calculate the energy of a photon with this wavelength.
skad [1K]
3x10^8 / (670.8 * 10^-9) =4.47x10^14 Hz 4.47x10^14 Hz multiplied by plank's constant = 2.9634x10^-19

2.96 x10-19 J
3 0
3 years ago
Read 2 more answers
8)
8_murik_8 [283]

Answer:

1.67 M

Explanation:

75.0 g *1 mol/180 g = (75/180) mol of glucose

250 mL = 0.250 L

(75/180)/0.250 = 1.67 mol/L =1.67 M

4 0
3 years ago
An ideal gas in a closed container initially has a volume V and Temperature T the final tempera is 5/4T and the final pressure i
Anettt [7]

Answer:

V_2 = \frac{5V}{8}

Explanation:

I am assuming you are saying what is the final volume of the gas

Known :

Initial volume (V1) = V

Initial temperature (T1) = T

Final temperature (T2) = 5/4 T

Initial pressure (P1) = P

Final pressure (P2) = 2P

<u>Wanted: Final volume (V2)</u>

<u />

<u />\frac{P_1V_1}{T_1} = \frac{P_2V_2}{T_2}\\\frac{PV}{T} = \frac{(2P)V_2}{(5/4)T}\\\frac{V}{1} = \frac{(2)V_2}{5/4}\\5/4V = 2V_2\\\\V_2 = \frac{5V}{8}

5 0
2 years ago
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