Answer:
C) They show plants and animals that once existed but do not exist now.
Answer:
See the steps below (8,681.25 g of 
will be needed0
Explanation:
From the equation, 4 moles of H2 requires 1 mole of Fe3O4.
1st step: calculate the number of mole of 300 g of H2.
mole = mass/molar mass
Mole of 300 g H2 = 300/2 = 150 mole
Hence, 150 moles of H2 will require: 150/4 = 37.5 moles of Fe3O4.
Step 2: Use the mole of Fe3O4 to calculate the mass of Fe3O4
mass = mole x molar mass
mass of 37.5 mole Fe3O4 = 37.5 x 231.5 = 8,681.25 g
Hence, 8,681.25 g of Fe3O4 will be required to completely react with 300 g H2
Answer:
Proteins in a protein complex are linked by non - covalent protein - protein interactions. The process of complex formation comprises of steps namely : An encounter complex is formed that either proceeds towards final complex or dissociates again.
Explanation:
Proteins in a protein complex are linked by non - covalent protein - protein interactions. The process of complex formation comprises of steps namely : ... An encounter complex is formed that either proceeds towards final complex or dissociates again.
Earlier in the passage this question was provided for, you should be able to find the fallowing text: "The mantle, being made of rock, acts as a very effective insulator."
Answer: Mantle
