Balance the equations by inserting coefficients as needed.

Chemistry

1 answer:

drek231 [11]3 years ago

4 0

Answer:

first one is already balanced

2. MgN2+6HCl->3MgCl2+2NH3

Explanation:

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Barium nitrate is combined with sodium phosphate. When the balanced net ionic equation is constructed for this reaction, the sto

alexandr1967 [171]

The complete equation for this reaction is,

Ba(NO3)2 + Na2PO4 = 2NaNO3 + BaPO4

Among the compounds present in the reaction, Barium Nitrate, Sodium Phosphate and Sodium Nitrate are soluble ionic compounds. Hence, they will completely ionize into ions. Only BaSO4 is insoluble which becomes the precipitate. Ionic equation is:

Ba2+ + 2NO3- + 2Na+ + PO42- = 2Na+ +NO3- + BaPO4

Cancel like ions,

Ba2+ + PO42- = BaPO4.

Thus, the stoichiometric coefficient of Barium ion is 1.

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3 years ago

Complete combustion of 4.20 g of a hydrocarbon produced 12.9 g of CO2 and 6.15 g of H2O. What is the empirical formula for the h

umka21 [38]

We calculate first the number of moles of CO2 and H2O produced by dividing the given masses by the molar masses of CO2 and H2O.
moles CO2 = (12.9 g CO2) x (1 mole CO2 / 12 g CO2) = 1.075 moles.
moles H2O = (6.15 g H2O) x (1 mole H2O / 18 g H2O) = 0.36 moles
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C1.075H0.72O2.5
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3 years ago

SiS2 is a _____ compound

Lerok [7]

Answer:

SiS2, silicone disulfide, is a linear, nonpolar compound.

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A sample of methane collected when the temp was 30 C mmHg measures 398 mL. What would be the volume of the sample at -5 C and 61

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<h2>Question </h2>

A sample of methane collected when the temp was 30 C and 760mmHg measures 398 mL. What would be the volume of the sample at -5 C and 616 mmHg pressure

<h2>Answer:</h2>

434.32mL

<h2>Explanation:</h2>

Using the combined gas law:

$\frac{PV}{T}$ = k