Enter the amount to be converted in the box to the left of the currency and press the convert button. To show Bangladeshi Taka and just one other currency click on any other currency. The Bangladeshi Taka is the currency in Bangladesh (BD, BGD). The symbol for BDT can be written Tk.
Mass, Size, and Density of the Universe. The mass density of visible matter (i.e., galaxies) in the Universe is estimated at 3e-28 kg/m^3 (3e-31 times the mass density of water). The radius of the visible Universe is estimated at 1.7e26 m (18 thousand million lightyears) plus or minus 20 percent or so.
the atomic mass carbon is 12.011 g/mol   12.011/mol = the mass of one atom    12.011/6.022x10 raised to the power of 23    this equals 1.994520093 x 10 raiseâ¦d to the power of -23    this is the mass of one atom of carbon in grams.