Answer:
It is incorrect because sodium phosphate is a compound that has a single composition.
Explanation:
Sodium phosphate is a compound and not a mixture. It is made up of sodium and phosphate ions and they exists as just a single compound and not different entities.
The parts of a mixture exists separately and they retain their identities.
- In the compound a sodium phosphate we have 3 atoms, Na, P and Oxygen joined together in a definite grouping.
- The properties of the compound are different from the individual elements that makes them up.
If ALL individuals of a species were not able to have offspring, then that species would eventually become extinct.
If I'm not mistaken, it's 1:2. 1 mole of H2 = 2 moles of H. 1 mole of Cl2 = 2 moles of Cl.
Explanation:
from the graph study about oxygen content of Earth's atmosphere, we can understand that
1)
4 billions year ago = None, 3 billions year ago = Cyanobacteria and Archaea , 2 and 1 billions year ago = Bacteria and Green algae , 500 Ma = invertebrate fossils started to existence. Early land plants came in to existence around 398 MA that is Devonian. Dinosaurs are came in to existence during Triassic and Jurassic that is around 251 Ma. Man and animals are recent organism came under Holocene that is 11000 years ago.
2)
The first cells on the earth are anaerobic microorganisms, as the CO2 level is too high they survive by using CO2.
3)
Starting around 2.7 billion years ago, photosynthesis by Cyanobacteria and later plants , pumped “OXYGEN” in to the atmosphere. This caused the decline of anaerobic bacteria and allows the diversification of animals as seen in “CAMBRIAN” around 500 millions year ago.
Early vascular plants “CAPTURED” CO2 starting before the Carboniferous period that began around 350 millions year.Leading to lower temperatures and allowing and allowing the seed plants to outcompetes seedless plants.
Modern human activities has raised both “CO2 and METHANE” level in the atmosphere to over leading to higher temperature and extinction of other species.
<u>Answer: </u>
of volume needs to be pipetted out in the test tube.
<u>Explanation:</u>
We are given:
Mass of BSA to be formed = 
(Conversion factor: 
Volume of stock solution = 
(Conversion factor: 
It is also given that for the mass of BSA is 0.5 g, the volume used up is 1 mL
In order to have, 0.005 g, the volume of stock solution needed will be = 
Hence, of volume needs to be pipetted out in the test tube.
