Describe in one sentence how fireworks get their color.

If heat was added at a constant rate to the solid substance, why did the temperature remain at 16 Celsius for approximately 6 minutes?

Use Hess's Law and equations B and C to find the enthalpy change for equation A. A) 2 C2H4 + H2O à C4H9OH ΔH = ? B) 2 C2H4 + 6 O2 à 4 CO2 + 4 H2O ΔH = - 2822.2 kJ C) 4 CO2 + 5 H2O à C4H9OH + 6 O2 ΔH = 1534.7 kJ

What concentration of ethanol is the most effective bactericide?

How many valid electron dot formulas-having the same number of electron pairs for a molecule or ion-can be written when a resonance structure occurs?

Which property of gases allows them to be stored at high concentrations in a bottle of air freshener?

The heart is an example of which level of organization within an organism? O cell organ tissue organ system O O

NaOH+HCl--> NaCl+H2O what is the total number of grams of H2O produced when 116 grams of the product, NaCl, is formed?

Is a sample of liquid nitrogen more dense than a sample of nitrogen gas

You have a balloon containing 1 L of air at STP in a vacuum chamber. What will the volume of the balloon be when you reduce the pressure by half and increase the temperature to 373 K?

Which method will correctly determine whether the forces on an object are balanced or unbalanced? A. Multiply the forces in the horizontal direction by the forces in the vertical direction. B.