Copper has density of 8.96g/cm^3. A sample of impure copper is found to have a density of 7.20/cm^3. There are two possible impurities aluminum and or lead. Given that Aluminum has a density of 2.70g/cm^3 and lead has a density of 11.34g/cm^3, explain which is the most possible impurity in the sample

Which is a characteristic of mixtures?

If a 12-v battery is connected to a circuit that has a current of 3.0 a, what is the total resistance in the circuit? 36 ohms 4 ohms 0.25 ohms

Rocks, as they are compressed, begin forming mountains above the earth's surface when two continental plates converge. the continental crust increases in depth as the mountains grow above. the himalayan mountains formed at a convergent plate boundary in this manner. the rocks are smashed together causing them to due to the intense heat and pressure from the colliding plates and eventually forming rock. a) melt; igneous b) layer; sedimentary c) recrystallize; metamorphic d) melt into the earth's interior; metamorphic