Is rust a pure substance or a mixture? <3

If 40.0 g of water at 70.0°c is mixed with 40.0 g of ethanol at 10.0°c, what is the final temperature of the mixture?

DNA replication takes place

Describe, in detail, how to make 5.5 liters of a 2.5 molar HCl solution from a 10.5 molar HCl stock solution.

True or false. like poles of magnet attract each other while unlike poles repel each other.

What takes place among elements to form an ionic bond? A. One or more electrons are transferred. B. One or more electron shells are shared. C. One or more electrons are shared. D. One or more electron shells are transferred.

Which is a quantitative observation A. 15 m long B. red color C. rough texture D. strong odor

How many moles of Na are needed to produce moles of NaCl in the reaction below 2 Na + Cl2-->> 2 NaCl A. 2 moles B. 8 moles C. 1 mole D. 4 moles

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?