<span>Compounds are composed of different elements in a fixed proportions. For example, 1 atom of oxygen (O) combines with 2 atoms of hydrogen (H) to form one molecule of water (H2O) compound. Similarly other numbers of atoms would produce other chemical compounds. Even adding 1 more atom of oxygen would convert the water (H2O) into hydrogen peroxide(H2O2). Even if we were only to list the ones we know there are over 20 million known compounds.
In order to list all possible compounds such a table would rapidly become combinatoric nightmare of such size that it would not be practical to use even with a computer database and it would consist of over 100 billion possible compounds containing only H, C, O and N.
Creating a table to handle all possible elements would mean a table of many trillions of compounds.</span>
Explanation:
We're using the chemical equation:
4P + 5O2 → P4O10
First convert grams of product to moles:
75g P4O10 x (1mol / 284 g) = 0.264 mol P4O10
Using the mole ratios, convert moles of product into moles of reactant needed:
0.264 mol P4O10 x (5 mol P / 1 mol P4O10) = 1.32 mol O2
Hi,
Chemistry is a branch of science that deals with the identification of the substances of which of which matters is composed.
I hope it helps!
The vascular cambium also known as the main cambium the wood cambium plural cambium is a plant tissue located between the xylem and the phloem
Answer:
c. The scientists’ calculations were incorrect; the energy totals should have been the same.
Explanation:
We must remember that energy can not be created nor destroyed according to the law of conservation of mechanical energy.
The total energy of a body remains a constant throughout its motion. For a body rolling down a ramp, the energy changes from potential to kinetic + potential and then to kinetic.
In all of these stages of its motion, the total energy of the glass marble remains constant.
