The burning of 50.2 g of SiH 4 (MW= 32.8)at constant pressure gives off 3790 kJ of heat. Calculate A H for this reaction.(MW SIH4(g) + 202(g) → SiO2(s) + 2H20(t) O a. -47.2 kJ/mol rxn O b.-2476 kJ/mol rxn OC.-1520 kJ/mol rxn d. +4340 kJ/mol rxn e. -4340 kJ/mol rxn

Q: A student prepares a stock solution of BaF2 by dissolving 50.00g of a BaF2 in 1.00L of water. An add...

A: Given data,Mass of BaF2=50.00gVolume of water=1.00LMolarity of desired solution=0.100MVolume of desi...

Q: The burning of 20 g of SiH 4 (MW= 32.8)at constant pressure gives off 927 k) of heat. Calculate AH f...

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Q: the boiling point of a 6.95M solution of C12H22O11 in water? A. 100.0°C B.

A: Molarity = 6.95 M For very dilute solution,  Molarity = Molality  Using the Coligative property,  □T...

Q: 4. Calculate potentials after the addition of 10.00, 25.00, 50.00, and 50.10 mL of the reagent. Wher...

A: "Since you have asked multiple questions, we will solve the first question (4a) for you. If you want...

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Q: 4. Does growth of corals: Ca²+ + CO3²- → CaCO3(s) cause atmospheric CO2 to increase or decrease? Exp...

A: Growth of corals will decrease the atmosphere CO2

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A: Given :- number of moles of HX = 1.61 mol  Number of moles of NaX = 0.28 mol  Total volume = 1 L  Ka...

Q: H2 + N2 - N2 NH3

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Q: 15 Gaseous ethane (CH;CH3) reacts with gaseous oxygen gas (0,) to produce gaseous carbon dioxide (CO...

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Q: C2 H4 (9) + 302 (g) 2 CO2(g) + 2H2O(1) 2C2 H6 (g) + 702 (9) → 4 CO2(g) + 6H2O(1) 2H2 (g) + O2 (9) → ...

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Q: N(CH3)2 HO,

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Q: What is the empirical formula for a compound containing 59.72% Tin 16.10% sulfur and the remainder o...

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Q: Fumaric acid is an organic compound composed of 41.39% C, 3.47% H, and the rest oxygen. If 0.204 mol...

A: % of C = 41.39 % of H = 3.47 % of O = 100- 41.39 - 3.47 = 55.14

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A: Copper crystallizes in a face centered cubic structure. What is the mass of one unit.

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Q: What is the empirical formula for a compound containing 59.72% Tin 16.10% sulfur and the remainder o...

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Q: If 0.251 grams of MgO were added to 24.8 mL of HCl (density = 1g/mL), use the graph collected below ...

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Q: If 123 g of C10H16O are dissolved in 355 g of C6H6, what is the freezing point of this solution?

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Q: of chemical reactions? Select one: a.

A: Rate of chemical reaction is change in concentration of reactants per unit time interval.   

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Q: The rate at the start of the reaction is called

A: At the beginning of the reaction. i.e. time t =0, it is called initial rate.

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A: Hess law tells about the heat change takes place in a chemical reaction. 

Q: Balance

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Q: Give the IUPAC name of the following structure: HO.

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Q: Br H opp. Confiq at Stereoienten HI enunthomers R BS ienan H Br Br H Br diastereomers R Br meso form...

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Q: For each step in the reaction show the mechanisms. Each reactiond has at least one intermediate

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Group 14 Elements

The following elements come under group 14 of the periodic table.