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Sedbober [7]
3 years ago
11

¿Cómo se obtiene la nomenclatura de compuestos?

Chemistry
1 answer:
Alexeev081 [22]3 years ago
3 0
En la nomenclatura estequiométrica con números romanos (antigua de Stock) los compuestos se nombran con las reglas generales anteponiendo como nombre genérico la palabra óxido seguido por el nombre del metal y su estado de oxidación en números romanos y sin signo.
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The combustion of 0.374 kg of methane in the presence of excess oxygen produces 0.983 kg of carbon dioxide. What is the percent
anyanavicka [17]
Assuming that the combustion formula is
CH4 + 2O2 --> 2H2O + CO2<span>,

That means for every 1 molecule of methane(CH4) there will be one molecule of carbon dioxide(</span>CO2) produced. Methane molecular weight 16, carbon dioxide molecular weight is 44. Then the percent yield should be:
1 * (0.374/ 16) /(0.983/44)= 0.374*44/ 0.983 * 16= 104.6%

You sure the number is correct? Percent yield should not exceed 100%
5 0
4 years ago
If 200.0 g of copper(II) sulfate react with an excess of zinc metal, what is the theoretical yield of copper? 1.253 g 50.72 g 79
Helen [10]
1)we need a balanced equation: CuSO₄ + Zn ---> ZnSO₄ + Cu

2) we need to convert the grams of CuSO₄ to moles using the molar mass. 

molar mass CuSO₄= 63.5 + 32.0 + (4 x 16.0)= 160 g/mol

200.0 g CuSO_4 ( \frac{1 mol}{160 grams} )= 1.25 mol CuSO_4

3) convert moles of CuSO₄ to moles of Cu

1.25 mol CuSO_4 ( \frac{1 mol Cu}{1 mol CuSO_4} )= 1.25 mol Cu

4) convert moles of Cu to grams using it's molar mass.

molar mass Cu= 63.5 g/mol

1.25 mol (\frac{63.5 grams}{1 mol} )= 79.4 grams Cu

I did it step-by-step as the explanation but you can do all of this in one step. 

200.0 g CuSO_4 ( \frac{1 mol CuSO_4}{160 g} ) ( \frac{1 mol Cu}{1 mol CuSO_4} ) ( \frac{63.5 grams}{1 mol Cu} )= 79.4 grams Cu


4 0
4 years ago
The following ionic compounds are found in common household products. write the formulas for each compound:
victus00 [196]

Answer:

A. Potassium phosphate: K3PO4

B. Copper (II) sulfate: CuSO4

C. Calcium chloride: CaCl2

D. Titanium dioxide: TiO2

E. Ammonium nitrate: NH4NO3

F. Sodium bisulfate: NaHSO4

Explanation:

All are ionic salts with different valent (mono valent cation or poly valent cation and anions) ions.

3 0
3 years ago
Sterling silver contains silver and copper metals. If a sterling silver chain contains 33.3 g of silver and 2.70 g of copper, wh
marusya05 [52]

Answer:

7.5 % of Ag

Explanation:

Total mass of sterling silver chain is:

Mass of silver + Mass of copper

33.3 g Ag + 2.70g of Cu = 36 g

% of Silver is (mass of silver / total mass) . 100 →

(2.70 g / 36 g) . 100 → 7.5%

7 0
3 years ago
Read 2 more answers
Wasting my points here who wants them?
yKpoI14uk [10]
Me thanks for the points
4 0
2 years ago
Read 2 more answers
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