Calculate the mass/volume percent of a NaCl solution in which 174 g of NaCl is dissolved in enough water to give a total volume of 1.25 L .

When the following equation is balanced using the smallest possible integers, what is the coefficent of oxygen gas? c7h16o(g) + o2(g) → co2(g) + h2o(g) -1 -5 -8 -16 -21

What is the density of the black hole

Working with si (metric) units for each of the following commonly used measurements, indicate its symbol. liter gram milliliter kilogram meter centigram milligram centimeter kilometer second millimeter milliseconds