Given the following data for a chemical reaction, determine whether it is a zero, first, or second order reaction, and then calculate the concentration at time 45 seconds. (Enter in units of M) Time(s) Concentration (M) 0.94 0.82 0.70 0.58 0 10.0 20.0 30.0 Remember that a zero order reaction has a linear plot of concentration versus time Submit Answer Incorrect. Tries 4/99 Previous Tries

Consider a bar of that has a mass of 2.22 x10^5. Knowing that the density of gold is 19.3 g/cm^3, what is the volume of this bar of gold

Which one of the following statements describes the gaseous state of matter? O a. The atoms or molecules do not have enough energy to move about and are in constant contact with each other. Neither the volume nor the shape of the matter can change. O b. The atoms or molecules do not have enough energy to move about but only contact each other when they randomly collide. The volume can change but the shape cannot. O c. The atoms or molecules are constantly in contact with each other and have enough energy to move about. The volume remains constant but the shape can change. Od. The atoms or molecules have enough energy to be constantly in motion but they are in constant contact with each other. The volume can change but the shape cannot. O e. The atoms or molecules have enough energy to be in constant motion and only contact each other when they randomly collide. Both the volume and shape can change.

Which of the following is a chemical property and NOT a physical property?    Group of answer choices   Surface Tension Density Flammability Malleability Color

When reading the volume of water in a burette or graduated cylinder, it is best to read the volume from Othe top of the meniscus O the bottom of the meniscus eye level O the top of the burette or graduated cylinder O the bottom of the meniscus and at eye level

What state of matter has an effectively indefinite shape but a constant volume?    Group of answer choices   Liquids Gases Solids Plasma None of these

A middle school student asks you why hot air rises. Explain in one to three sentences the reason that hot air rises. The students understands what density is, so you should include that in your explanation.