Express each number in decimal notation (i.e., express thenumber without using scientific notation).(a) 6.022 * 1023 (number of carbon atoms in 12.01 gof carbon)(b) 1.6 * 10-19 C (charge of a proton in coulombs)(c) 2.99 * 108 m/s (speed of light)(d) 3.44 * 102 m/s (speed of sound)

7. Carryout the following conversions. (a) 25.0 m to km

Having obtained the volume of a flask (25.00 cm³), the student emptied the flask, dried it, and filled it with an unknown liquid whose density she wished to determine. The mass of the stoppered flask when completely filled with liquid was 47.867 g. The mass of the empty stoppered flask was 26.192 g. Find the density of the liquid. (in g/cm³) (a) First we need to find the mass (in g) of the liquid by determining the difference. mass of liquid = g (b) The density of a pure substance is equal to its mass divided by its volume: density = mass volume Since the volume of the liquid equals that of the flask, we know both the mass and volume of the liquid and can easily find its density. Calculate the density (in g/cm³) of the unknown liquid. density of liquid=

Calculate the mass of ammonia (NH;) that contains a trillion (1.0 × 102) hydrogen atoms. Be sure your answer has a unit symbol if necessary, and round it to 2 significant digits. ?