1. If you have 25% radioactive parent atoms in a mineral crystal, and 75% daughter atoms, how many half-lives have passed?

Choose all of the examples where the act would increase the rate a solute will dissolve in a solvent. crushing up a sugar cube before putting it into your coffee putting the fruit punch mixture into cold water adding bath salts to a tub full of hot

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Parts per million (ppm) is a common way to express small concentrations of a solute in water. A sample of tap water that is 25 ppm Cl-Cl - contains 25 grams of Cl-Cl - for every 1,000,000 grams of water.

C.) Is heating of cobalt (ii) chloride crystals a chemical change or a physical change (Imk)

5. What is the name of the molecular compound PCI? A pentaphosphorous monochloride OB phosphorous pentachloride OC monophosphorous tetrachloride OD diphosphorous trichloride

What is the resultant molarity of 20mL of a 3.5M solution is diluted to 100mL? Will mark brainliest

The shape of molecules that contain only two atoms is

Standing near a campfire, you can feel heat. This is an example of a) acceleration b) conduction c) convection d) radiation

Find the mass in grams of 2.00*1023 molecules of C10H140

Choose the substance with the lowest surface tension. Choose the substance with the lowest surface tension. a) H2O b) (CH3) 2CO c) CH3CH2CH2CH3 d) C6H6 e) CH3OH