Which of the following instruments is used to measure air pressure?

a. Barometer

b. Thermometer

c. Anemometer

d. Hygrometer

In one experiment, 0.893 mol of NO is mixed with 0.519 mol of O2. Determine which of the two reactants is the limiting reactant. Calculate also the number of moles of NO2 produced.

Hydrogen gas explosive within range of 4%-75% v/v. Assuming that each student in your class produces 6 L of H2 and that the lab is not ventilated, is danger of an explosion? Show your calculations to back up your answer.

When do chemicals bond form

When you strike a match, what do you provide that enables the flame to appear? a. catalyst b. reactant c. product d. activation energy e. activated complex

Do you expect the aromatic hydrocarbons to react in a similar way to the cyclic alkenes, since the are both cyclic compounds and have double bond?

Organize the items listed into the proper sequence of events for gas exchange. a: O2 is transported to cells by circulatory system. b: O2 is drawn into the lungs during inhalation. c: Cells use O2 and generate CO2. d: CO2 is exhaled.

Research about the reaction of baking soda and vinegar

What mass (in mg) does 2.63 moles of nickel have? 3.56 * 105 mg 1.54 * 105 mg 2.23 * 104 mg 129 mg?

Given the propane molecule C3H8 (g) ! a) What is the balanced equation for the combustion of propane in O2? (20 pts.) b) What is the standard enthalpy change ΔH0 for the reaction at 25°C? (20 pts.

Which of the following happens during a chemical change? Check all of the boxes that apply. One atom or more changes into atoms of another element. New substances with different properties are formed. Solids, liquids, or gases may form.