Which color has a higher frequency,

A. red light

B. blue light

Identify the solute with the lowest van't hoff factor.

In which of the following sets is the symbol of the element, the number of protons, and the number of electrons given correctly? F, 19 protons, 19 electrons Cs, 55 protons, 132.9 electrons Zn, 30 protons, 60 electrons In, 49 protons, 49 electrons

How many moles of methane, CH4, are present in 8.75 L at a pressure of 278.3 kPa and 843 K? (use R= 8.314 kPa•L•mol-1•K-1) Part B. How many grams of CH4 are present in the sample above?

What is always true of a combustion reaction? oxygen gas must be one of the reactants carbon monoxide will be produced the reaction absorbs energy one reactant must contain chlorine

What do scientists use to determine what the interior of a moon is like?

What is the enthaply of the reaction?

Which color has a higher frequency, A. red light B. blue light

what is the volume of 0.98 mol oxygen (O2) gas at 275 K and a pressure of 2.0 atm? (the universal gas constant is 0.0821 L*atm/mol*K)

Which element is classified as an alkali metal? Rb Sr Zr Cl

Which statements about a neutral atom are correct? Check all that apply. The positively charged particles in the nucleus are positrons. The radius of the electron cloud is twice as large as the radius of the nucleus.