The higher the altitude the colder the temperature? true or false.

A 64.35-g of an unknown metal sample at 100 (degree Celsius) is placed into a calorimeter that contains 55.0 g of water at 25.2 (degree Celsius). The final temperature of the metal and water is 29.7 (degree Celsius). a.

In the reaction, 2Na (s) + 2H2O (l) → 2NaOH (aq) + H2 (g), which of the reactants or products is in the gas phase? Na H2O NaOH H2

One of the following is not a factor which affect rates of reaction: a. Surface Area b. Temperature c. Concentration d. Pressure

A balloon has a volume of 1.75L at a temperature of 25 °C. what will be the volume of the balloon if you take it out into the winter cold air at - 15°C?

Using the chemical equation: 4NO2 (g) + O2 (g) + 2H2O (l) = 4HNO3 (aq) : Calculate the theoretical yield in grams of nitric acid when 2.0 moles nitrogen dioxide react with 2.0 moles of oxygen gas.

The town in the video stressed using locally made goods instead of imported goods. How could using locally made goods lower CO2 emissions?

Calculate the ΔHrxn for the following reaction: CH4 (g) + 2Cl2 (g) - - > CH2Cl2 (g) + 2HCl (g) Use the following reaction and given ΔH's: CH4 (g) + Cl2 (g) - - > CH3Cl (g) + HCl (g), ΔH = - 99.

Select all that apply to diffusion. A solid cannot diffuse in to another solid. Solids can diffuse in liquids. Liquids can diffuse in liquids. It is the process of intermingling atoms from one substance into another.

We are all familiar with the general principles of operation of an internal combustion engine: the combustion of fuel drives out the piston.

A first order reaction has a rate constant of 0.816 at 25 oC. Given that the activation energy is 22.7 kJ/mol, calculate the rate constant at 34 oC. (enter answer to 3 decimal places)