Which macromolecule is ring shaped

The table below shows some physical properties of two unknown samples. Physical Properties Sample Mass Solubility (in water) C 200 g 36 g/mL D 500 g 180 g/mL What would best support whether the two samples are of the same substance or not?

Which of the following [H+] values describes the most basic (alkaline) solution?

What is genes? & how are their identified when doing a dna test?

What is true of valence electrons? a) They exist in the outer orbital. b) they easily move from one orbital to another c) they have difficulty moving from one orbital to another d) they are always the lowest energy electrons of the atom

Is diamond cutting glass a physical or chemical property?

A 26.6 g sample of aluminum at 100.4 °C is added to 100.6 g of water at 21.5 °C in a constant pressure calorimeter. What is the final temperature of the water in °C? The specific heat capacity of aluminum is 0.903 J/goC.

Give the iupac name of the amine shown. spell out the full name of the compound.

Assuming Ideal Gas Law is applicable, calculate density, specific weight, and specific volume of air at 120 oF and 50 psia.

A tire at 21°C has a pressure of 0.82 atm. Its temperature decreases to - 3.5°C. If there is no volume change in the tire, what is the pressure after the temperature change?

How many molecules are in 12 grams of methane (CH 4) ?