Answer:
7.8 moles are needed.
Explanation:
Given data:
Mass of oxygen produced = 125 g
Number of moles of mercury oxide needed = ?
Solution:
Chemical equation;
2HgO → 2Hg + O₂
Number of moles of oxygen:
Number of moles = mass/ molar mass
Number of moles = 125 g/ 32 g/mol
Number of moles = 3.9 mol
Now we will compare the moles of oxygen with mercury oxide.
O₂ : HgO
1 : 2
3.9 : 2×3.9 = 7.8 mol
Fibrous roots grow from the main stem of the plant, unlike the taproot.
Plants with a taproot system are usually deep rooted and have a primary root while fibrous roots are much shorter, and are densely packed fine roots.
Answer:
To be honest, I would say the best answer is the fact that flies move so you can't be sure if you counted a fruit fly or not. If this is a test i am sorry if you get it wrong, if its homework this is what I would've put.
Answer:
Its the second one
Explanation:
Only ten percent gets transformed to the next thing on the pyramid so it's the second one.
Answer:
Diploid
Explanation:
Sexually reproducing organisms are diploid (having two sets of chromosomes, one from each parent). In humans, only their egg and sperm cells are haploid.
