Analysis of a sample of a covalent compound showed that it contained 14.4% hydrogen and 85.6% carbon by mass. what is the empirical formula for this compound?

Which of the following statements include exact numbers? (Select all that apply.) There are 1000 mm in 1 m. Jane is 63 in tall. There are 453.59 g in 1 lb There are 60 minutes in1 hour. Viewing Saved Work Revert to Last Response Submit Answer

What is the Celsius temperature of 1 mole of a gas that has an average kinetic energy of 3,866 joules?

What units of measurement do scientists use?

Do molecules have protons?

Which of the following characteristics is NOT true of cold fronts? A. Violent weather such as thunderstorms occur along them. B. The temperature drops as they pass. C. Clear weather usually follows them. D. They move more slowly than warm fronts.

In the reaction A + B C, doubling the concentration of A doubles the reaction rate and doubling the concentration of B doubles the reaction rate.

How much more acidic is a solution with a PH of 5 than a solution with a PH of 8?

A sealed balloon is filled with 2.20 liters of helium gas at 20.0° C. If the pressure does not change, what is the temperature when the balloon expands to a volume of 2.60 liters? 16.9° C 23.6° C 25.1° C 73.3° C

If I have a molar concentration of Na2S2O3 of. 02M and a volume of. 001L. As well as a Molar Concentration of KI. 3M and H2O2 of. 1M. The equation of the reaction is 2S2O3+I3 - >3I+S4O6. The question is "How many moles of S2O3 are consumed".

Solid sodium reacts violently with water producing heat, hydrogen gas and sodium hydroxide. How many molecules of hydrogen gas are produced when 65.4g of sodium are added to water? 2Na (s) + 2H2O (l) - - >. 2NaOH (aq) + H2 (g)