Which one of the following is not a balanced equation? explain why.
a. c3h8 (g) + o2 (g) → co2 (g) + h2o (g)
b. c3h8 (g) + 5o2 (g) → 3co2 (g) + 4h2o (g)
c.2mg (s) + o2 (g) → 2mgo (s)
d.4na (s) + o2 (g) → 2na2o (s)

Using the periodic table, complete the table to describe each atom. type in your answers.a ? b? c? d? e? f?

City a and city b had two different temperatures on a particular day. on that day, four times the temperature of city a was 8â° c more than 3 times the temperature of city b. the temperature of city a minus twice the temperature of city b was â’3â° c. what was the temperature of city a and city b on that day? city a was 5â° c, and city b was 4â° c. city a was 3â° c, and city b was â’1â° c. city a was 8â° c, and city b was â’3â° c. city a was 5â° c, and city b was â’5â° c.

When 225mg of anthracene, c14h10(s), was burned in a bomb calorimeter the temperature rose by 1.75k. calculate the calorimeter constant. by how much will the temperature rise when 125mg of phenol, c6h5oh(s), is burned in the calorimeter under the same conditions? (δch< (c14h10,s)=–7061 kj mol−1.)