How many significant figures are in 0.00044

The agent of mechanical weathering in which rock is worn away by the grinding action of other rock particles is call

Which element has the lowest electronegativity? calcium(ca) gallium(ga) selenium(se) bromine(br)

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.