How many significant figures are in the measurement 40, 500 mg? a) two b) three c) four d) five

1.00-degree increase on the Celsius scale is equivalent to a 1.80-degree increase on the Fahrenheit scale. The temperature of a fluid increases by 48.0°C. What is this increase in degrees Fahrenheit? 49.8°F 48.0°F 26.7°F 86.4°F

If 21/825g hydrogen sulfate ion in 5litr water solotion, what the percentage of its ionization?

While driving your rental car on your trip to Europe, you find that you are getting 9.7 kilometers per liter of gasoline. What does this correspond to in miles per gallon?

Which of the following gives the molarity of a 17.0% by mass solution of sodium acetate, CH 3COONa (molar mass = 82.0 g/mol) in water? The density of the solution is 1.09 g/mL. a. 2.26 * 10^-6 M b. 0.207M c. 2.07M d. 2.26M e. 2.72M

Which is example of pure chemistry

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)