Which equation is NOT balanced? a. 2H2 + O2 → 2H2O c. Fe2O3 + 3H2 → 2Fe + 3H2O b. 4NH3 + 5O2 → 4NO + 6H2O d. 3H2 + 2O2 → 2H3O

How are estuaries connected to oceanic organisms? A. Estuaries provide a nursery grounds for oceanic organisms. B. Estuaries provide sunlight for oceanic organisms. C. Estuaries provide primary food for oceanic organisms. D.

All fossils were formed from. A) plants B) bones C) animals D) organisms

An iron bar at 200°C is placed in thermal contact with an identical iron bar at 120°C in an isolated system. After 30 minutes, both iron bars are at 160°C.

Give the percent yield when 28.16 g of co2 are formed from the reaction of 8.000 moles of c8h18 with 4.000 moles of o2. 2 c8h18 + 25 o2 → 16 co2 + 18 h2o

Precambrian rocks were primarily which type of rocks? A. igneous B. sedimentary C. metamorphic D. conglomerate

Which element could chlorine bond with to form an ionic compound? helium oxygen fluorine sodium

Given 4.8 moles of a gas in a 1.8 L container, if the temperature is found to be 31 degrees Celsius, what is the pressure of the gas? (The ideal gas constant is 0.0821 L · atm/mol · K and 1 atm = 760 torr.) 6.79 torr 66.55 torr 6.79 x 100 atm 6.

Write this number to two significant figures in scientific notation. Use the "^" character to indicate the exponent. 4.253

AN atoms nucleus contains it's protons and electrons true or false

What is the difference between parent geometry and actual geometry