# Posts by veronique

Total # Posts: 6

**Algebra**

In how many ways can 8 new teachers be assigned to 14 classes at a school, if each must be in a different class?

**Algebra**

If the universal set is {a, b, c, d, e}, A = {a, d} and B = {b, e, d}. Find the following sets: A∩B^c

**Chemistry**

The balanced reaction equation for the combustion of heptane, C7H16, is given below. If the reaction produced 37.5 g CO2, how many grams of heptane were burned?

**chemistry**

Automotive air bags inflate when sodium azide, NaN3, rapidly decomposes to its component elements: 2NaN3(s)→2Na(s)+3N2(g) a)How many moles of N2 are produced by the decomposition of 1.60mol of NaN3? b)How many grams of NaN3 are required to form 14.0g of nitrogen gas? c)...

**Science**

Which changes temperature more rapidly, land or water?

**math**

I am a prime number between 40 and 50. If you add one to me, the sum of the prime factors of that composite number is 11. What number am I?