Match the following rocks with the correct type obsidian intrusive igneous granite organic sedimentary conglomerate clastic sedimentary evaporite extrusive igneous coal metamorphic marble

What is the purpose of the salt bridge in a voltaic cell? A. It blocks the flow of electrons. B. It blocks the flow of positive and negative ions. C. It is a path for the flow of electrons. D. It is a path for the flow of positive and negative ions.

How many atoms of hydrogen are in 170 g of hydrogen peroxide (h2o2) ?

Which compound is an acid? A. HNO3 B. NH3 C. C2H4 D. KCl

Other than a base and a sugar unit, which of the following is a component of a nucleotide? sulfate group nitrate group phosphate group carbonate group

What is the temperature of a 1.59 L flask containing 0.175 mol of Ne at a pressure of 1.09 atm?

Which of the following equilibria would be impacted by a change in pressure? Select the correct answer below: H2 (g) + I2 (g) →2HI (g) NO (g) + O3 (g) →NO2 (g) + O2 (g) 2SO3 (g) →2SO2 (g) + O2 (g) CO (g) + H2O (g) →CO2 (g) + H2

A common stain remover is sold in concentrated form as 3M sodium hypochlorite (NaOCl). You need to create 400 milliliters of a 0.5M solution of sodium hypochlorite to fill a spray bottle. What volume of 3M sodium hypochlorite is needed? 15.0 mL 66.

A chemical reaction that takes in heat is called: exothermic endothermic a phase change

Which of the following lines (of latitude or longitude) would represent by 180 longitude? South Pole Equator Prime meridian North Pole International date line

63Ni decays by a first-order process via the emission of a beta particle. The 63Ni isotope has a half-life of 100. years. How long will it take for 65% of the nickel to undergo decay?