An object has a mass of 180 kg and a volume of 90 m3. what is its density?

the copper anode is weighed before and after the electrolysis reation. if the copper anode is not completely dry when it is weighed after the electrolysis how would this affect the value of the faraday's constant calculated?

How does the movement of particles of matter change when matter goes from solid to liquid?

Desertification A. will typically increase the amount of erosion in an area B. does not have any effect on the level of vegetation C. decreases the amount of salt in the soil D. increases the ability of the land to support life

A rock has a mass of 13.0 g and displaces a volume of 3.9 mL of water in a graduate cylinder. What is the density of the rock? (write your number to 2 places after the decimal)

Why is science so hard.

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