A girl needs hellpp!

What is the most specific classification of Ca (NO3) 2

A) atom

B) compound

C) molecule

D) element

In a sealed gas-liquid system at constant temperature, eventually ... ? there will be no more evaporation. the rate of evaporation equals the rate of condensation. the rate of condensation decreases to zero.

Which element has three unpaired electrons in its p orbital?

A student came late to class and started her notes midway through the lecture. These are the notes she copied: -Small, rocky object -Not round, irregular shapes -1 km-900 km across -Make up a belt between Mars and Jupiter What should she title her

In the solid solution of a gold ring, which component is most likely the solvent? A. iron B. silver C. gold D. oxygen

And is the bending of rock layers due to stress

Predict the empirical formula of these compounds. a. C2N2. b. P4O10. c. N2O5. d. NaCl. e. C9H20. f. B2H6. g. K2Cr2O7. h. Al2Br6. i. C6H6. j. SiCl4

What happens when the cold finger is placed in the hot water? what direction did the heat travel from the hot water?

For a neutral Nitrogen, how many electrons are in the 2p electron orbitals?

A neutral atom has an atomic number of 20 and a mass number of 41; how many protons, neutrons, and electrons are found within the atom?

Which of the following are dwarf planets Ceres Nama is Eris Charon Haumea Makemake Pluto