Which of these are a body fossil A. dinosaur nest B. shrimp burrow C. leaf imprint D. claw print

The ionic bond of sodium chloride is formed when

The atomic mass of hydrogen-1 is 1.008 and the atomic mass of helium-4 is 4.003. Find the difference in grams between 4 moles of hydrogen and one mole of helium. A) 4.81 x10-26 g B) 0.029 g C) 1.7 x 1022 g D) 0 grams

What is the main difference between a longitudinal wave and a transverse wave?

what is the difference between the orbital model and electron cloud model? explain which one is a better representation?

What is the average speed vavg of the molecules in the gas? express your answer numerically to three significant digits?

Which of the following is a precipitation reaction? a. 2 LiI (aq) + Hg2 (NO3) 2 (aq) →Hg2I2 (s) + 2 LiNO3 (aq) b. NaCl (aq) + LiI (aq) → NaI (aq) + LiCl (aq) c. HCl (aq) + KOH (aq) → KCl (aq) + H2O (l) d.

How many outmost electrons do lithium and potassium have

Which of the following is a heterogeneous mixture Air Salt water Steel Soil I think it's soil but I'm not positive

When 40.5 g of Al and 212.7 g of Cl2 combine in the reaction: 2 Al (s) + 3 Cl2 (g) - -> 2 AlCl3 (s) b) How many moles of AlCl3 are formed?

Which factor does not influence the rate of a chemical reaction? A. the concentration of reactants B. the surface area of reactants C. the presence of a catalyst D. the volume of the container in which the reaction occurs