A sample of gold has a volume of 2 cm3 and a mass of 38.6 grams. What is the density of this sample? HINT: Use the formula D=m/v

Which real-world scenarios below represent physical and chemical changes? -running a car -exploding fireworks -mixing water and powdered drink mix -combining oil and vinegar to make salad dressing -taking aspirin for a headache -diluting bleach with water-digesting dinner-spreading peanut butter on bread

Ageologist determines that a sample of a mineral can't be scratched by a steel nail but can be scratched by a masonry drill bit. based on this information, the sample mineral has to be softer than a. orthoclase. b. fluorite. c. apatite. d. corundum.

What is the ph of a 0.0010 m hno3? 1.0 3.0 4.0 5.0