From the following symble,
(28/14) si^-4 this atom contains 14 protons?

If a reaction has g of -136kj at 110°c, will it be spontaneous at this temperature (110°c)? yes or no

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.)

The chart shows the bid provided by four contractors to complete a job. which contractor is the most cost-effective?