Which has the highest rate of effusion oxygen or hydrogen

I. j Thompson's experiments provided evidence that an atom Is the smallest particle of matter Contains negatively charged particles Has a positive charge Has a negative charge

Which is more reactive: Magnesium or Potassium?

How can you use qualitative properties to identify a gas sample? A. Line spectra B. Flame test

Volume is an unreliable measurement because A. food expands or contracts in different temperatures. B. gas weighs less than liquid. C. there's no standard size of measuring cup or spoon. D. solids can't be measured accurately by volume.

What happens to air temperature as altitude increases? A: Air temp increases B: Air temp decreases C: Air temp stays the same D:Air temp depends on the amount of organisms in the area

Describe the preparation of 2.00 L of 0.100 M glycine buffer, pH 9.0, from glycine and 1.00 M NaOH.

Reducing the volume of a contained gas by one third, while holding temperature constant, causes pressure to A. be decreased by two thirds. B. be increased by two thirds. C. be decreased by one third. D. be increased by one third

What is the percent mass/volume of a solution having a mass of 65.00 grams and a volume of 600ml

This element has 3 electrons in its Lewis dot structure and is in the 3p orbital section.

In an exothermic reaction, energy is transferred from a. the reactants to the surroundings. c. one reactant to another. b. the surroundings to the reactants. d. the container to the chemicals.