yatam.bcp

1. Which of the following bonds are the most polar, that is, have the greatest ionic character: H-Br, N-H, N-O, P-Cl? Why?
   
   
2. Write the Lewis symbols expected for Sn, Br- and S2-.
3. Predict the molecular geometry of nitrogen trichloride.
   
   
4. Nitrous oxide, N2O, is the familiar laughing gas used as an anesthetic in dentistry. Predict the shape of the N2O molecule.
5. Only one of the following molecules is polar. Which is it, and why? SF6, H2O2, C2H4?

What's science?

Plants absorb light energy and convert it into chemical energy.  If you shine only green light on a plant, do you think it will grow and convert the light into chemical energy? Explain your answer. 

What are 6 physical properties of a liquid?

What is a mole?

acid dissociation reaction for proton removal in water

Use the domain theory to explain why a permanent magnet can be used to pick up a paperclip even though a paperclip is not a magnet. 

what are molecular sieves?

How many molecules are in 0.21 moles of sulfur trioxide?

Select one:

1.3 x 10²³ molecules

0.21 molecules

7.8 x 10²³ molecules

4.7 x 10²³ molecules

2.2 x 10²² molecules

3.0 x 10²⁴ molecules

Is it true or false?

The Voting Rights Act of 1965 established a system of federal regulations to ensure Southern states couldn't discriminate against African American voters anymore.

What are molecules?

A crane lifts a 200 kg object to a height of 10 m in 5 s. Whatisits power output?

200W
1960W
3920W
19600W
98000W

Which of the following best describes what Life Science is?

A. The study of nonliving materials, including astronomy, chemistry, physics, etc.

B. The study of society and the relationships among individuals within a society

C. The study of living organisms and life processes, including biology, medicine, ecology, etc.

A crane lifts a 400 kg crate upward with an acceleration of 3.00 m/?. Determine the force on the crane.