Atomic number of

**helium**, Z = 2 Rydberg constant, R = 1.097 × 10⁷ m⁻¹...1 Answers · Science & Mathematics · 22/09/2020

Who says anything about what happens at 0 K? 0 K cannot be achieved. But I would guess the answer to the question to be: because hydrogen has hydrogen bonds and

**helium**does not.1 Answers · Science & Mathematics · 19/06/2020

Given: Pi = 66.6 kPa Vi = 100 mL Vf = 250mL Ti = 20 oC = (20.0+273) K = 293 K Tf = 15.0 oC = (15.0+273) K = 288 K use: (Pi*Vi)/(Ti) = (Pf*Vf)/(Tf) (66...

1 Answers · Science & Mathematics · 22/05/2020

(767 L) x (–29.1 + 273) K / (17.9 + 273) K x (752 mmHg / 337 mmHg) = 1435 L

1 Answers · Science & Mathematics · 24/04/2020

((10.0 mol x 5.00 bar) + (5.00 mol x 20.0 bar)) / (10.0 mol + 5.00 mol) = 10.0 bar

2 Answers · Science & Mathematics · 04/10/2020

P = nRT / V = (0.0135 mol) x (62.36367 L mmHg/K mol) x (50. + 273) K / (0.224 L) = 1214 mmHg

2 Answers · Science & Mathematics · 11/03/2020

(4.40 atm) x (3.23 L) / (3.23 L + 9.43 L) = 1.12 atm

3 Answers · Science & Mathematics · 17/09/2020

**Helium**and Argon. They are both noble gases and their outer electron valence she's are completely filled with electrons.5 Answers · Science & Mathematics · 28/01/2020

Rate(He)/Rate(Cl₂) = √[MM(Cl₂)/MM(He)] = √(35.5×2/4.00) = 4.21 The answer: 4.21 (The third option)

1 Answers · Science & Mathematics · 01/06/2020

... trying to refer to an isotope of hydrogen with mass = 3 .. and an isotope of

**helium**with mass 3 .. it is a simple math problem tritium has 2 ...1 Answers · Science & Mathematics · 20/05/2020