Answer:
is a qualitative ordinal scale characterizing scratch resistance of various minerals through the ability of harder material to scratch softer material.
Explanation:
Here we have to get the amount of propane can be produced from the reaction of 1.7 moles of carbon (C).
1.7 moles of carbon will produce 0.425 moles of propane
In the reaction 8 moles of carbon is producing 2 moles of propane. Thus, mathematically,
8C → 2C₃H₈
Thus 8 moles of carbon produces 2 moles of propane
1.7 moles of carbon produces ×1.7 = 0.425 moles
Thus 1.7 moles of carbon will produce 0.425 moles of propane.
Thus the amount of propane will be prepared from the reaction of 1.7 moles of carbon is determined.
Answer:
1. alpha - decreased mass by 4 - decrease atomic number by 2
2. beta electron - no change - increase by 1
3 - beta positron - no change - decrease by 1
4. gamma - no change - no change
5. electron capture - no change - decrease by 1
Explanation:
There are five main types of radioactive decay, a process where the nucleus loses energy by emitting radiation, these radiation or type of radioactive decay are alpha particles, beta particles, positron or beta positron, gamma particles and electron capture.
The effect of these particles causes a change in the number of subatomic which leads to different atomic mass and atomic numbers after the decay -
1. alpha - decreased mass by 4 - decrease the atomic number by 2
2. beta electron - no change - increase by 1
3 - beta positron - no change - decrease by 1
4. gamma - no change - no change
5. electron capture - no change - decrease by 1
they move around and eventually come and join to make a solid
Answer:
Manganese (Mn)
Explanation:
We know it's manganese because we are told it is an electrically neutral atom. This means it has the same number of protons and electrons. If it has 25 electrons, it has 25 protons. Protons tell us the atomic number of the atom, which also tells us the name of the element. Manganese is element 25 on the periodic table.