z Which die following lists of asems are in order ecREASING first ionization Con

Question

z Which die following lists of asems are in order ecREASING first ionization Consider the reaction berween and Hckaroto apueous chloride a hydrogen gas. How many liters of hydrogen gas at STP will be producod when 12.15 reacts with an A) 160 L B) 200 L c) 224L. Di 112 L E) 100 What is the density of oxygen gas in g per liter, at 2s "Cand 0.850 atm? A) 0.901 c) 1.11 D) 0.750 E) 0.556 A wavelength ofred light is measured at 65s nm. What is this measurement in cm? A) 655 10 om C) 6.55 cm B) 000655 cm D) 6.55 x 10 cm When 87,7 is added to 73,84I, the result should be reported with significant figures. when 87.7 is divided by 73,841 the result should be reported with significant figures A) 4.3 B) 4A CO a T

Explanation / Answer

2) (B) Li<O<N<F

3) (D)

24.3 g of Mg wil produce H2=22.4L

12.15 gof Mg will produce 22.4 x 12.15 / 24.3 = 11.2 L

4) (C)

Density d = PM/RT = 0.850 atm x 32 g/mol /0.082 L atm mol-K- x 298 K = 1.11 g/L

5) (D)

1 nm = 10-7 cm

655nm = 655 x 10-7 cm

6) (A)

In addition and subtraction answer should be reported upto same decimal places as that of term with least decimal places

In multiplication and division answer is reported to same significant figures as possesed by least precise term.

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