The densities for a few solids are listed below: Plastic 1.15 (g/mL) magnesium 1.74 (g/mL) aluminum 2.70 (g/mL) ice 0.917 (g/mL)
Which object will sink and which will float in chloroform (d = 1.48 g/mL)?

Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.

Balance and in which category does it fit in? single or double displacement or synthesis or decomposition? (a) k2 o → k + o2 (b) na + i2 → nai (c) cu(no3 )2 + naoh → cu(oh)2 + nano3 (d) kclo3 → kcl + o2 (e) ca(no3 )2 + hbr → cabr2 + hno3 (f) sn(oh)2 → sno + h2 o (g) p4 + n2 o → p4 o6 + n2 (h) fe + al2 (so4 )3 → feso4 + al (i) alcl3 + na2 co3 → al2 (co3 )3 + nacl (j) c3 h6 + o2 → co2 + h2 o

How many moles of sulfur dioxide are produced when 4.38 moles of oxygen completely react with iron (iv) sulfide