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Andrej [43]
3 years ago
9

The charge on the manganese in the salt MnF3 is _____.

Chemistry
1 answer:
Gemiola [76]3 years ago
5 0
Answer is c because the charge is +3
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(9) How many moles of oleum in 1780. g of oleum? - Write an equation to summarize the process.
stich3 [128]

Answer:

1. 10moles

2. Find the summarized equation below

Explanation:

Mole = mass ÷ molar mass

Molar mass of oleum (H2S2O7) = 1(2) + 32(2) + 16(7)

= 2 + 64 + 112

= 178g/mol

According to the information provided, the mass of oleum is 1780g, hence, the number of moles in it is:

Mole = 1780/178

Mole = 10moles

2. The summarized equation of the contact process is:

1) S + O2 → SO2

2) 2SO2 + O2 → 2SO3

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4) H2S2O7 + H2O → 2H2SO4 (dilute sulfuric acid)

7 0
3 years ago
If 1.00 g of a hydrocarbon is combusted and found to produce 3.14 g of co2, what is the empirical formula of the hydrocarbon?
photoshop1234 [79]
The combustion reaction is as expressed,

                CxHy + O2 --> CO2 + H2O

The mass fraction of carbon in CO2 is 3/11. Hence,
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Given that we have 1 g of the hydrocarbon, the mass of H is equal to 0.14 g. 

     moles of C = 0.86 g C / 12 g = 0.0713
     moles of H = 0.14 g H / 1 g  = 0.14

The empirical formula for the hydrocarbon is therefore, CH₂.
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It’s not a 100% but hopefully it helps with some kind of analogy.
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this is good update to the doctor and I will be taking the test soon and will have a gf with my

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