Which sentences describe describe disadvantages of burning fossil fuel? (more than one can be selected) a. burning fossil fuels contributes to climate change b. burning fossil fuels takes place inside expensive fuels cells. c. fossil fuels aren't widely available, but pure hydrogen is. d. fossil fuels are non renewable.

According to the vsepr theory what is the shape of a molecule that has a central atom valence three other items with no lone pairs of electrons

22. a flask containing 450 ml of 0.50 m h2so4 was accidentally knocked to the floor. how many grams of nahco, do you need to put on the spill to neutralize the acid according to the following equation: h2so4(aq)+2 nahcos(aq) na,so(aq) +2 h20()+2 co2(g) d) 38 g a) 2.3 g b) 9.5 g c) 19 g

Acm ruler with main graduations from 1 to 10 from left to right there are 10 secondary graduations between each of the main graduations there is a line that begins. at the left end of the ruler 10 secondary graduations to the left of the “1 main graduation the right end of the line ends on the eighth secondary graduation to the right of 3 how long is the line