Which elements can join with other elements to form covalent bonds? Check all that apply.

beryllium (Be)

carbon (C)

cesium (Cs)

hydrogen (H)

iodine (I)

nitrogen (N)

A number of beakers have different concentrations of a solution. Which statement best describes the most concentrated solution? It has the largest volume. It has the most solute for a given volume. It has the greatest amount of solute.

Which structures are haploid? select all that apply. which structures are haploid? select all that apply. gametophyte spores zygote egg sporophyte?

How many Moles of NAOH are present in 2.50L of 0.300 M NaOH?

Why are organisms with albinism hard to find in nature?

Which halogen is the most easily oxidized?

How many liters of radon gas would be in 3.43 moles at standard temperature and pressure (273 K and 100 kPa) ? A. 100 L B. 76.83 L C. 6.53 L D. 6.99 L

Which of the following equations describes a single-replacement reaction? A. 2N2O5 (g) = O2 (g) + 4NO2 (g) B. 2Na (s) + Cl2 (g) = 2NaCl (s) C. Cl2 (g) + 2Kl (s) = 2KCl (s) + l2 (g) D. H2 (g) + Br2 (g) = 2HBr (g)

What is the kinetic energy of the emitted electrons when cesium is exposed to UV rays of frequency 1.50*1015Hz1.50*1015Hz? Express your answer in joules to three significant figures.

Using your knowledge of symbols, determine which compound listed must contain both copper and oxygen. a. glucose, C6H12O6 b. chalcopyrite, CuFeS2 c. malachite, Cu2CO3 (OH) 2 d. calcite, CaCO3

Molecules move most slowly in: solids liquids gases compounds