Before free oxygen gas became abundant in the oceans and atmosphere, it reacted with a metal and produced what type of formations?

a. the ionosphere

b. the ozone layer

c. banded iron formations

d. stromatolites

Tell Whether or not each equation is balanced mark A if you think it is correct mark B if you think it is not balanced 1) 2Fe (OH) 3 → Fe2O3 + 3H20 2) 2Al (OH) 3→ Al2O3 + 3 H2O

A sample of gas occupies 7.80 liters at 425°C? What will be the volume of the gas at 35°C if the pressure does not change? 4.65 liters 3.65 liters 3.44 liters 7.65 liters 5.89 liters

1. What specifically are you looking for in the IR spectrum to determine if the reaction has given the desired product? 2. What specifically are you looking for in the NMR spectrum to determine if the reaction has given the desired product?

A vehicle of known mass accelerates along a straight path. according to newtons second law of motion, what caused this acceleration?

A single atom of platinum has a mass of 3.25 x 10^-22 g. What is the mass of 6.0 x 10^23 platinum atoms?

Where does Celsius boil

In physical changes, the atoms or molecules that compose the matter do not change their identity, even though the matter may change its appearance.

The electrolyte in a typical wet storage cell or battery is a mixture of water and A. lead. B. ammonium chloride. C. sulfuric acid. D. zinc.

Express 1.5 yards in cm

22. If one is traveling at 55 mi/h, how many meters will one travel in 42.3 minutes?