Mass is the property of a physical body and the resistance to acceleration when a net force is applied on the body.
The atomic mass of sodium (Na) is = 22.98
The atomic mass of nitrate (N) is = 14.00
The atomic mass of oxygen (O) is = 15.99
The sodium nitrate (NaNO3) consists of the atomic masses of Na+N+(O)3 = 85 grams
Therefore, the mass of 6.5 mol of sodium nitrate is = 6.5 * 1 mol of NaNO3
= 6.5 * (85)
= 552.50 grams
Answer:
The period number tells which is the highest energy level occupied by the electrons.
Explanation:
- The period number (denoted by n) is the outer energy level that is occupied by electrons in an atom.
- The period number that an element is in, is the number of energy levels that the element has.
- When we move across a period from left to right in a periodic table the number of electrons in atoms increases within the same orbit.
Answer:
<u><em>1. The air boiled out of water as steam is rich in water vapor, </em></u><em><u>H₂O</u></em><u><em>(g)</em></u>
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<u><em>2. Benzene reacts with hydrogen in the presence of nickel catalyst at 180°C to give cyclohexane.</em></u>
Explanation:
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1. When water boils liquid water passes to gaseous phase.
Water in gaseous phase is named water vapor or steam.
This happens around 100ºC, depending on the atmospheric pressure.
The air that is around the boiling water will carry that steam, becomind an air rich in water vapor, H₂O(g)
2. Benzene has chemical formula C₆H₆.
It is a cyclic unsaturated hydrocarbon. Benzene contains 3 double bonds.
When unsaturated hydrocarbons are heated in the presence of nickel catalyst, the double bonds are broken, forming single bonds and adding the needed hydrogen to the chain: one to each carbon that had a double bond transformed into single bond.
Thus, the product of the catalytic hydrogenation of benzene, C₆H₆, is cyclohexane, C₆H₁₂
The image attached, taken fron the internet, can help you.
Explanation:
All the points that are given below are true to have been affecting the war theory positively. The untimely and unnatural death that were happening earlier was prevented after introduction of germ theory and keeping a check on the germs that were inflicting death.
Also the accidental discovery of X-Ray helped the soldiers to get an overview of what was happening inside the body. The nuclear power plants help generate atomic energy and brought in the concept of nuclear weapons so did happen with atoms as well which lead to development atom bombs that were very useful in wars