Which of the following orbitals is the largest in size?

A. 2s

B. 4s

C. 1s

D. 3s

E. all s orbitals are the same size

Which is an example of a heterogeneous catalyst? amylase catalytic converter food preservatives amino acids

What are Lewis dot Structures?

E. solid copper sulfide and silver nitrate react to form copper (ii) nitrate and solid silver sulfide. write a balanced chemical equation that describes the reaction. identify the oxidation number of each element in the reaction.

In the pie chart below, which of the following represents the amount of Earth's water located in the oceans? A pie chart with part A representing 2%, part B representing. 8%, part C representing. 2% and part D representing 97%.

Which compounds are electrolytes? (1) C2H5OH and H2SO4 (2) C2H5OH and CH4 (3) KOH and H2SO4 (4) KOH and CH4

3. Write the mathematical relationship of ideal gas law?

Consider the reaction 4FeS2 + 11O2 → 2Fe2O3 + 8SO2. If 8 moles of FeS2 react with 15 moles of O2, what is the limiting reactant? FeS2 Fe2O3 O2 SO2

What happens in a double replacement reaction

Identify the oxidizing agent and the reducing agent in the following reactions: (i) 8NH3 (g) + 6NO2 (g) = > 7N2 (g) + 12H2O (l) (ii) Zn (s) + AgNO3 (aq) = > Zn (NO3) 2 (aq) + Ag (s) (unbalanced)

Visible light is the A. highest energy level on the electromagnetic spectrum. B. only part of the electromagnetic spectrum that can be seen by humans. C. lowest energy on the electromagnetic spectrum.