chemistry
The electron pairs in a molecule of NH3 form a tetrahedron. Why does the NH3 molecule have a trigonal pyramidal shape rather than a tetrahedral shape? Explain your answer. PLEASE HELP
Calculus
Total cost to manufacture q microwaves a day is C(q)=3q^2+q+48.What level of product gives the least average cost and Can a microwaves be produces for less than $30?
history
How was the civil rights movement of the 1950s and 1960s a continuation of the Reconstruction-era struggle for blacks to achieve equality?
history
How was the civil rights movement of the 1950s and 1960s a continuation of the Reconstruction-era struggle for blacks to achieve equality?
chemistry
Based on electronegativity values, which bond has the highest degree of ionic character: H--S Si--Cl Cs--Br?
science
How do you figure out if acceleration occurred. What would the equations look like?
science
you are riding your bike at 9km/h. ten minutes later; your speed is 6km/hr.
science
91km/h
science
What is the average speed of a car that travels 320km in 3.5 hours?
chemistry
Ammonia, NH3, can be made by reacting nitrogen with hydrogen. N2 + 3H2 = 2NH3 How many moles of NH3 can be made if 7.5 moles of H2 react with enough N2? Please help!
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