Why is streak useful for identifying minerals?

Five-gram samples of copper and iron are at room temperature. both samples receive equal amounts of energy due to heat flow. the specific heat capacity of copper is 0.09 cal/g°c, and the specific heat capacity of iron is 0.11 cal/g°c.

Indicate whether each of the following substances would be more soluble in H2O or C6H14: (a) KI (b) C8H18 (c) grease (d) CH3 (CH2) 12OH (e) NaC2H3O2

Give two effects of acid rain

What are the two conclusions were made regarding to discovering of an electron

Dr. House took two liquids of different densities (p_1=1500 kg/m^3; p_2 = 500 kg/m^3) are poured together into a 0.1 m^3 tank filling it. If the resulting density of the mixture is 800 kg/m^3.

What changes occur in the nuclei of atoms involved in the reactions that fuel nuclear power plants?

Calculate the molar mass for HCN. 0.2703 g/mol 2.703 g/mol 27.03 g/mol 270.3 g/mol

This iron oxide mineral commonly has a reddish color and consistently has red streaks. What mineral is it?

Which of the following transitions would release energy? n=2->n=3 n=1 - > n=3 n=3 - >n=1 n=3->n=2

Which animal group actually saw a drop in the number of endangered and threatened species between 1995 and 2005? a Fish b. Reptiles c. Birds d. Mammals