Which of these equalities is correct? a. 1 g = 1000 kg b. 1 cm = 100 m c. 1 l = 1000 ml d. 1 mm = 10 cm

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

For the reaction shown, calculate how many moles of no2 form when each of the following completely reacts. 2n2o5(g)→4no2(g)+o2(g) part a 1.0 mol n2o5 express your answer using two significant figures. nothing mol m o l request answer part b 5.4 mol n2o5 express your answer using two significant figures.