Aballoon contains 1.00 mol helium gas at stp. what will the volume of the balloon be if the pressure increases to 2.00 atm? 11.2

a syringe contains 0.10 mol neon gas at stp. what volume does the syringe indicate? 2.24

a chemist adds 0.10 mol argon gas to the syringe. the pressure and temperature remain constant. what will be the volume on the syringe after the argon is added? 4.48 l

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