4. Methods scientists use to determine if a change was physical or chemical

What is a sentence for classify

What is the difference between the carbon allotropes diamond and graphite

Human fat has a density of 0.918 g/cm3. How much volume (in cm3) is gained by a person who gains 10.5 lb of pure fat?

Aspirin is 60.00% carbon, 4.48% hydrogen and 35.35% oxygen. What is the empirical formula for asprin?

How many milliliters of calcium, with a density of 1.55 g/mL, are needed to produce 98.5 grams of calcium hydroxide in the single-replacement reaction below? Show all steps of your calculation as well as the final answer. Ca + H2O → Ca (OH) 2 + H2

Consider the polymerization of styrene in toluene at 60°C initiated by di-t-butylperoxide for a solution containing 0.04 mol of initiator and 2 mol of monomer per liter. The initial rates of initiation, Ri, and propagation, RP, are found to be 1.

Which of the dollowing isotopes have 8 neutrons in the nucleus? 0-15 0-17 C13 O C14

Click the DeltaH is an Extensive Property button within the activity, and analyze the relationship between the two reactions that are displayed.

The fundamental unit used to measure mass is?

What are some ways population size is limited within an ecosystem?