Why isn't air travel based on hydrogen popular today? A. Hydrogen is very expensive B. Hydrogen is difficult to find C. Hydrogen is flammable and dangerous D. Hydrogen is too cold for travelers to stand on long trips

The rate of a reaction is measured by how fast a reactant is used up or how fast a product is formed. True or False?

Which equation represents a neutralization reaction? 1. Na2CO3 + CaCl2 - > 2NaCl + CaCO3 2. NaCl + AgNO3 - > NaNO3 + AgCl 3. Ni (NO3) 2 + H2S - > NiS + 2HNO3 4. H2SO4 + Mg (OH) 2 - > MgSO4 + 2H2O

What formation is favored by the addition of heat.

Atom behaves electrically neutrol. Why?

Who discovered Fluoride?

Draw every stereoisomer for 1,2-difluoro-1,2-dimethylcyclopentane. use wedge-and-dash bonds for the substituent groups, and be sure that they are drawn on the outside of the ring, adjacent to each other.

Suppose an ice cube weighing 36.0 g at a temperature of 10°C is placed in 360 g water at a temperature of 20°C. Calculate the temperature after thermal equilibrium is reached, assuming no heat loss to the surroundings.

Why can't all the mixtures be classified as solutions? A. Not all mixtures are heterogeneous B. Not all mixtures are homogeneous C. Not all mixtures have solutes and solvents D. Mixtures are made of only one substance.

Which of the following is a homogeneous mixture? A) Molten ironB) Stainless steelC) Trail mixD) Water

State the general relationship between temperature of the water and the amount of the salt that will dissolve in the water