Which factor can decrease the rate of a chemical reaction? low activation energy high pressure low temperature high concentration of reactants

Which group on the Periodic Table has at least one element in each of the three phases of matter at STP?

Is texture physical or chemical property

What is an Element and how it different from a Atom?

Some isotopes of elements are unstable and decay into other, more stable isotopes over time. for example, it takes 153 years for half of a sample of silicon (si) atoms with 14 protons, 14 electrons, and 18 neutrons to decay.

The reaction of fluorine with ammonia produces dinitrogen tetrafluoride and hydrogen fluoride. 5 F2 ( g. + 2 NH3 ( g. N2F4 ( g. + 6 HF ( g. ( a. If you have 73.7 g NH3, how many grams of F2 are required for complete reaction? b.

What is the net ionic equation for AgNO3 (aq) + Na2SO4 (aq)

What does it take to prove a hypothesis false? O A. It is impossible to prove a hypothesis false O B. At least ten examples O C. One counterexample O D. A poorly stated question

We dissolve 5g of sugar, C12H22O11, in water to make 1L solution. What is the concentration of this solution expressed as molarity.

Explain how the molar mass of a gas affects the rate at which the gas diffuses and effuses

Wat is a redox reaction