Suppose now that you wanted to determine the density of a small yellow crystal to confirm that it is graphite. From the literature, you know that graphite has a density of 2.25 g/cm3. How would you prepare 20.0 mL of the liquid mixture having that density from pure samples of CHCl3 (d = […]

Proportion of Australians aged 25 years and over with high blood pressure, by age group, 1999-2000. Note: High blood pressure is defined as systolic blood pressure of 140 mmHg or more; or diastolic blood pressure of 90 mmHg or more; or receiving medication for high blood pressure. Source: AIHW analysis […]

What key revision to our understanding has made (at least some of) the icy moons of the outer planets in our Solar System promising targets for searches for life and evidence of past life? A) We have discovered evidence of organic molecules on the surface of some of the moons. […]

1) Any organism that causes disease is classified as a(n) pathogen. mechanical vector. antigen. biological vector. 2) Immunity that develops over time due to exposure to various antigens is termed adaptive immunity. innate immunity. coordinated immunity learned immunity. 3) The core of the immune system is made up of intact […]