Select the one that most likely has the highest rate of effusion Oxygen (O2) or hydrogen (H2) :

Bubba falls out of a plane flying over his peanut field. What will be bubba speed after falling for 8 seconds?

A substance is 35.7% carbon by mass. how much carbon could be recovered from 769 g of the substance?

Gold is called king of metals

Which two types of matter are pure substances? A homogenous mixtures and elements B solutions and compounds C elements and compounds D mixtures and elements

A 16.0 mL sample of a 1.04 M potassium sulfate solution is mixed with 14.3 mL of a 0.880 M barium nitrate solution and this precipitation reaction occurs: K 2 S O 4 (aq) + Ba (N O 3) 2 (aq) →BaS O 4 (s) + 2KN O 3 (aq) The solid BaS O 4 is collected,

What type of energy is associated with random motion of the particles in a sample of gas

Consider the compound Al (NO3) 3 and answer the following questions: What is the name of this compound? What is the molar mass of this compound? Explain how you calculated this value.

Which oxide is Mn2O3?

The ease with which a raw material can be molded, flattened, or bent is known as its? a. malleability, b. ductility, c. elasticity. d. resilience

19 The coefficients in a balanced chemical equation represent (l) the mass ratios of the substances in the reaction (2) the mole ratios of the substances in the reaction (3) the total number of electrons in the reaction (4) the total number of