A piece of metal weighing 15.442 g is placed in 49.7 ml of ethyl alcohol (d = 798 g/ml) in a graduated cylinder. the alcohol level increases to 51.8 ml. the best value for the density of the metal from these data is:

Which statement best describes the formula equation cl1 (g) + 2kbr (aq) - > 2kcl (aq) + br2 (i)

Which of the following is true about sea water? 1. Sea water is pure water (H20). 2. The salinity of sea water is negligible. 3. The chemical composition of sea water has great spatial variability. 4. Sea water is a solution.

An atom has six electrons in its valence shell. how many single covalent bonds would you expect it to form in most circumstances?

Why is it difficult to collect evidence about the sky

at a pressure of 405 kpa and a temperature of 200k the volume of a gas is 6.00cm^3. At what pressure will the new temperature and volume be 300k qnd 4.00cm^3?

Consider the following half-reactions: Half-reaction E° (V) I2 (s) + 2e - 2I - (aq) 0.535V 2H + (aq) + 2e - H2 (g) 0.000V Zn2 + (aq) + 2e - Zn (s) - 0.

Where did the longest tsunami form?

Calculate the number of H atoms in 0.190 mole C 6 H 14 O .

What fuel is produced by the electrolysis of water? chlorine gas hydrogen gas natural gas oxygen gas

Model describe how you would show j. j. thomson's model of the atom using small beads and clay