Select the equations that are correctly balanced.

a. H2O + 2O2 → H2O2

b. Fe2O3 + 3H2 → 2Fe + 3H2O

c. Al + 3Br2 → AlBr3

d. CaCO3 → CaO + CO2

How to remove a musty smell from a wool coat?

The Kelvin temperature of a sample of 678 cm3 ammonia gas is doubled, what is the new volume?

The hormones released by the endocrine system are transported through your body by the? A. digestive system B. excretory system C. circulatory system D. respiratory system

How many moles of H2 would be contained in 4.0 L of the gas at 202.6 kPa and 127°C?

A gas has a pressure of 3.16 atm at STP. I have decided to transfer it to a container that is 3 times larger than the original volume. What is a possible value for Pressure?

At equilibrium, a. the forward reaction rate is lower than the reverse reaction rate. b. the forward reaction rate is higher than the reverse reaction rate. c. the forward reaction rate is equal to the reverse reaction rate. d.

Given the balanced equation representing a reaction: 4Al (s) + 3O2 (g) - - >2Al2O3 (s) Which type of chemical reaction is represented by this equation? (1) double replacement (2) single replacement (3) substitution (4) synthesis

A helium balloon has a volume of 735 mL when it is at ground level. The balloon is transported to an elevation of 5km, where the pressure is only 0.8atm. At this altitude the gas occupies a volume of 1286mL.

If a mixture contains 75% of one compound and 25% of its enantiomer what is the e. e

White light, which consists of all frequencies, forms which type of spectrum?