Answejust put my mum said i didnt have to do this question
Explanation:
becuase im cool like that
Answer:
Average atomic mass = 46.91466 amu
Explanation:
Step 1: Data given
Isotopes of titanium
46Ti = 70.900% ⇒ 45.95263 amu
48Ti = 10.000 % ⇒ 47.94795 amu
50Ti = 19.100 % ⇒ 49.94479 amu
Step 2: Calculate the average atomic mass of titanium
Average atomic mass = 0.7090 * 45.95263 + 0.10 * 47.94795 + 0.1910 * 49.94479
Average atomic mass = 46.91466 amu
Answer:
Lavoisier disproved the phlogiston theory. He demonstrated that there was an element called oxygen that played a major role in combustion. He also showed that the mass of products in a reaction are equal to the mass of the reactants. The phlogiston theory did not account for the weight changes found in fire. Lavoisier hypothesized that it was probably the fixation and release of air, rather than fire, that caused the observed gains and losses in weight.
Answer:
Evolution in the broadest sense explains that what we see today is different from what existed in the past. Galaxies, stars, the solar system, and earth have changed through time, and so has life on earth.Something that happened in the past is thus not "off limits" for scientific study. Hypotheses can be made about such phenomena, and these hypotheses can be tested and can lead to solid conclusions. Furthermore, many key aspects of evolution occur in relatively short periods that can be observed directly—such as the evolution in bacteria of resistance to antibiotics.Laws, like facts and theories, can change with better data. But theories do not develop into laws with the accumulation of evidence. Rather, theories are the goal of science.
Explanation:
