Consider the reaction, C2H4 (g) + H2 (g) - C2H6 (8), where AH = - 137 kJ. How many kilojoules are released when 3.5 mol of CH4

reacts?

480 kJ are released

20 x 103 kJ are released

570 kJ are released

137 kJ are released

Why do alkaline earth metals always form 2 + ions

What unit of temperature is used in gas law calculations Kelvin Fahrenheit Celsius either Kelvin or Celsius

How many moles of sodium phosphate would be required to react with 1.0 mol of silver nitrate?

If the evidence you collect during experiments does not support your hypothesis, what should happen to that hypothesis.

If the actual yield of the reaction was 75% instead of 100%, how many molecules of no would be present after the reaction was over? express your answer as an integer.

1. What hypothesis could you propose about the relationship between the position of a type of atom in a molecule and the number of bonds that the atom forms? Explain your thinking.

The molality of a solution is a measure of - A - moles of solute per kilogram of solution B - moles of solute per liter of solution C - moles of solute per kilogram of solvent D - moles of solute per liter of solvent

Which technology has allowed for exploration beyond our solar system? A) space probe B) space station C) space shuttle D) space observatory

Which carbonate is most stable to heat? A. Sodium carbonate B. Copper (ii) carbonate C. Zinc carbonate

How many liters of 0.75 M solution can be made using. 336 moles of lead (II) oxide?