What is a glass rod used for in chemistry and biology laboratory?

Evaluate each scenario described to determine the direction of heat flow.

At a certain temperature the vapor pressure of pure heptane C7H16 is measured to be 454. mmHg . Suppose a solution is prepared by mixing 102. g of heptane and 135. g of chloroform CHCl3 .

When of the following best describes the influence of latitude on climate

2. Convert 6.578 x 1023 atoms of magnesium to moles. 6.578 x 1023 atoms x mol atoms

A sample of gas occupies 7.80 liters at 425=C2=B0C? What will be the volume = of the gas at 35=C2=B0C if the pressure does not change?

Write the electron configurations of cu2 + and ag+. is each electron configuration consistent with the color you observed for each cation? explain.

Does a precipitate form when a solution of sodium acetate and a solution of ammonium sulfate are mixed together?

How many grams of NaCl are in 150 mL of 3.36 M NaCl

One atom of silicon can properly be combined in a compound with A. four atoms of calcium. B. one atom of chlorine. C. two atoms of oxygen. D. three atoms of hydrogen.

8) Rubidium [Kr]5s has an atomic radius of 248pm. Tin, another period 5 element, has an atomic radius of 140pm. What would the correct atomic radius for xenon be? Xenon is also in Period 5 and a noble gas.