How would you identify substances in a question

At a job interview, the most effective way to prove your proficiency to a prospective employer is to show that you have A. experience with on-line research. B. your own test equipment. C. membership in several professional organizations. D.

A change in the color or smell of a substance might suggest what?

Molarity of 82.6 g sucrose, C12H22O11, in 725 mL

What assumption is made about the reason for the change in mass after chewing the gum

What class of elements includes all of the elements that are gases at room temperature? A. Non Metals B. Metals C. Metalloids

If A is slowly added to a solution containing 0.0500 M of B and 0.0500 M of C, which solid will precipitate first? The solubility product constant for A2B3 is 2.30*10-8. The solubility product constant for AC4 is 4.10*10-8.

Research three different types of fire extinguisher and explain how these can be used to put out different fires, you must relate this to the fire triangle and the section that is removed

If a mineral has a daughter to parent ration of 3:1 (three daughter atoms for every one parent atom), how many half-lives have passed since the mineral formed?

What is true of the enthalpy value of an intermediate reaction? A. It always has a negative enthalpy value B. It is multiplied by 2 if the intermediate reaction is multiplied by 2 C. It is the same as the total enthalpy of reaction D.

Calculate the percent composition of the compound that forms when 222.6 g N combines completely with 77.4 g 0. calculate to the nearest tenth of a percent.