Metal smelting plants are made to release and remove impurities from metal. The ore is removed through several different processes and in doing so releases the energy from such work and dust and minerals that are removed from the ore itself. Refer below \/ for the needed energy in these processes
carbon in the coal or charcoal used releases vast amounts of CO2 into the atmosphere which is causes a buildup in the ozone and sunlight when reflected off the earth and back into the carbon saturated ozone layer causes what we call the greenhouse effect. Carbon Dioxide is therefore referred to as a greenhouse gas
The molarity of H2SO4 is the number of moles in 1 L of solution.
The molarity is 2.0 mol/L
This means that there should be 2 moles in a 1 L solution to make up this molarity.
In this case we need to make up a 5 L solutions with that molarity. Then the amount of moles required are - 2 mol/L x 5 L = 10 mol
or is the conversion factor used to convert mole to particle.
<u>Explanation:</u>
The Avogadro's number named after the scientist "Amedeo Avogadrothe" and represented as <em>N</em> or <em>N </em>0. It is the number of constituent particles like atoms, molecules or ions which are present in one mole of salt or compound.
It is the dimensionless and international unit of amount of substance given as . The number of particles like atoms, molecules or formula units can be converted to moles by dividing the given particle value by Avogadro's number. . For example, if u want to convert molecules of into moles, then have to do as below,
The value of the Avogadro constant has been selected for all experimental purpose so that the mass of 1 mole of a chemical compound (in grams) is numerically equal to the average mass of one molecule of the compound.
Answer:
The percent abundance of oxygen-18 is 1.9066%.
Explanation:
The average atomic mass of oxygen is given by:
Where:
m: is the atomic mass
%: is the percent abundance
Since the sum of the percent abundance of oxygen isotopes must be equal to 1, we have:
Hence, the percent abundance of O-18 is:
Hence, the percent abundance of oxygen-18 is:
Therefore, the percent abundance of oxygen-18 is 1.9066%.
I hope it helps you!
Answer:
→A space heater warms a room⇒By converting electrical energy into heat energy.
→You eat dinner⇒Our body uses chemical energy to break down the food
→A radio plays⇒By converting electrical energy into sound energy in an electric radio. And by converting chemical energy into sound energy in a radio which runs with a cell.
Explanation: