Q6. 3
Q7. 3
Q8. pH
Q18. 3
Q19. 3
Q20. 4
Hope this helped??
Answer:
Parasites often show cospeciation because they must evolve with ther hosts.
Explanation:
The answer is B I believe
Answer:
Here's what I get.
Explanation:
There are many ways of classifying a reaction. Here are some that can apply to yours.
A. Combination or synthesis
Two or more elements combine to form a single compound.
B. Redox or reduction/oxidation
One element is oxidized, and another is reduced.
For example, the oxidation number of N is reduced from 0 to -3, and that of H is increased from 0 to +1.
C. Gas phase reaction
All reactants and products are gases (although the reaction is extremely slow without a solid catalyst).
D. Homogeneous
All substances are in the same phase (if you aren’t using a solid catalyst).
The main types of reaction are
- Decomposition
- Single displacement
- Double displacement
- Combustion
- Redox
Matter is made of very tiny particles. One mole of a substance contains a given amount of particles. This number is constant for all particles- 6.022×10^23<span> , and is called Avogadro's constant. To get the number of particles in 4g of butane, we need to calculate the number of moles represented by 4 g, then multiply by the Avogadro's constant (Since each mole has particles equivalent to the Avogadro's constant)
Therefore, if 1 mole = 58.1g
how many moles will be equal to 4g?
we cross multiply (4x1) divide by 58.1
equals 0.068847moles
multiply by Avogadro constant = 4.1466 x 10^molecules
But remember the question is not about the number of molecules in butane, its about the number of carbon atoms.
Since there are four carbons in butane, and each has </span> 4.1466 x 10^22 atoms
to get the number of atoms, we multiply by four
equals 1.6586 x 10^atoms