You have a block of dry ice (-40°C), an ice cube (-5°C) and alcohol (15°C). In which one do molecules move the fastest?

A. Ice Cube

B. Dry Ice

C. Water

D. Alcohol

When aqueous solutions of MgSO4 and Na2CO3 are mixed, does a precipitate form, and if yes, what is it?

Which is a better conductor of heat: air or a copper wire? Why?

Which of the following is not a symbol used in chemical equations?

Calculate the number of atoms per unit cell in each type of cubic unit cell. Enter three integers separated by commas (e. g., 1,2,3) in the following order: primitive cubic, body-centered cubic, and face-centered cubic.

To use the gas law constant R=0.0821 the unit for temp should be kelvin and the unit for pressure should be atmospheres True or false

14. Two or more substances that are together but do not combine to form a new, pure substance.

A solution of a compound with a known extinction coefficient of 23,100 M-1cm-1 has an absorbance of 0.735 in a 1.30cm path length, what is the concentration of the solution

Balance the following equation with the smallest whole number coefficients. Choose the answer that is the sum of the coefficients in the balanced equation. Do not forget coefficients of "one". RbOH + H3PO4 → Rb3PO4 + H2O

What is the temperature of 100 liter container having 1 mole of an ideal gas at a pressure of 20 kilopascals

5.2*10^26 molecules of ch4 in volume