The density of lead is 11.3 g/ml . The water level in a graduated cylinder initially at 217 ml rises to 286 ml after a piece of lead is submerged. What is the mass in grams of the lead?
How much energy (in calories) is needed to heat 12cm^3 of fat from room temperature (25C ) to its melting point (35C)? Specific heat of fat 0.45 cal/(g*C, and the density of fat is .94g/cm^3
when the equation C8H16+O2,CO2+H2O is correctly balanced using the smallest whole number coefficients, the coefficient of O2 is
A gas occupying a volume of 263 mL at a pressure of 0.970 atm is allowed to expand at constant temperature until its pressure reaches 0.541 atm. What is its final volume?
Draw a dot and cross diagram to show the bonding in CH2F2. Your diagram only needs to show the outer shell electrons.
which crystallizes in a metallic latticeNaMnO4KCLiClO4K2Cr2O7
The wheels on a particular moving car rotate 486 times per minute. Find the rotational period of the tires.
Find the frequency of small oscillations for a thin homogeneous plate if the motion takesplace in the plane of the plate and if the plate has the shape of an equilateral triangle andis suspended (a) from the midpoint of one side and (b) from the apex.
chemical equation for 3-nitroacetophenone using tin and hydrochloric acid
Which one of the following cells (Ch. 4) has the greatest surface-to-volume ratio? a. bacterium b. human red blood cell c. round, starch-storing cell in a potato d. frog egg e. ostrich egg
