He helped with the black people aswell anyways Rosa parks
George is the correct one; microorganisms are actually, in most cases quite helpful, from antibiotics to making bread, we have a lot of uses for microorganisms. Only a few like influenza are harmful.
Answer:
B. CH₅N
Explanation:
The combustion reaction of a compound CₐHₓNₙ with O₂ is:
CₐHₓNₙ + O₂ → a CO₂ + X/2 H₂O + n NO₂
Where 1 mole of CₐHₓNₙ with an excess of O₂ produce a moles of CO₂, X/2 moles of H₂O and n moles of NO₂
Thus, you need to convert the mass of CO₂ and H₂O to moles to find the C:H ratio and determine a possible empirical formula thus:
Moles CO₂ (Molar mass 44g/mol):
44g ₓ (1mol / 44g) = 1 mole CO₂ = 1 mole C
Mole of H₂O (Molar mass 18g/mol):
45g ₓ (1 mol / 18g) = 2.5 moles H₂O = 5 moles H
Thus, in the compound you have 5 moles of H per mole of C, and a possible empirical formula is:
B. CH₅N
The only structure that meet this C:H ratio
Answer:
Have you tried reading the questions first and then searching for them in the passage? I've started doing that when taking any standardized test and it's helped me a lot.
Also, if allowed by whomever is watching over you while you test, I highly recommend wearing a watch. It'll help you pace yourself (but try not to watch it obsessively because that's actually counterproductive)
Hope this helps
Explanation:
Answer:
The phospholipids in the plasma membrane are arranged in two layers, called a phospholipid bilayer. The water-hating tails are on the interior of the membrane, whereas the water-loving heads point outwards, toward either the cytoplasm or the fluid that surrounds the cell.
Explanation: