The total mass of the protons in an atom of gold-198 is approximately(1) 79 atomic mass units
(2) 119 atomic mass units
(3) 198 atomic mass units
(4) 277 atomic mass units
Answers
Protons have a relative mass of 1
Gold-198 is a radioactive isotope of gold, which means it has a different number of neutrons, but the same number of protons and electrons
So the answer is (1) 79 atomic mass units
The total mass of protons in a gold-198 atom is about 79 atomic mass units. This calculation considers the 79 protons, each with a mass of approximately 1 amu.
The correct answer is option 1.
The total mass of protons in an atom of gold-198 is approximately 79 atomic mass units. This is determined by considering the number of protons in the nucleus, which is 79 for gold-198. Each proton has a mass of approximately 1 atomic mass unit (amu). Therefore, multiplying the number of protons by the mass of one proton yields the total mass of the protons.
In the case of gold-198:
Total mass of protons = Number of protons × Mass of one proton
Total mass of protons = 79 protons × 1 amu/proton
Hence, the total mass of protons in an atom of gold-198 is approximately 79 atomic mass units.
In summary, the calculation involves recognizing that the mass number of an isotope is the sum of protons and neutrons. In this specific case, gold-198 has 79 protons, and the total mass of its protons is around 79 atomic mass units.
Therefore, from the given options the correct one is 1.
For more such information on: mass
#SPJ6
Related Questions
What are 5 examples of gases found at home?
You are on an alien planet where the names for substances and the units of measures are very unfamiliar. Nonetheless, you obtain 69 quibs of a substance called skvarnick. You can trade this Skvarnick for gold coins, but the vendors all measure skvarnick units of sleps; not quibs. 9 sleps is equal to 6 quibs. If you have 14 quibs of skvarnick, how many sleps do you have? Round your answer to the nearest tenth (one decimal place). Type only the number; not the number and unit.
Which compound is an exception to the octet rule? H2O HCl CCl4 ClF3
What is the velocity of a 500 kilgram elevator that has 4000 joules of energy?
Answers
Answer: B). lithium and chlorine
Explanation: An ionic bond is formed between a metal and a non-metal by transfer of electrons from metal to non metal.
Electronic configuration of lithium:
Lithium atom will loose one electron to gain noble gas configuration and form lithium cation with +1 charge.
Chlorine atom has oxidation number of -1.
Electronic configuration of chlorine;
Chlorine atom will gain one electron to gain noble gas configuration and form chloride ion with -1 charge.
combine with
to form lithium chloride
Answers
Answer :
There are three processes involved in the conversion of ethane to ethanoic acid.
In first process, on the chlorination of the ethane in the presence of the sunlight or in the presence of U.V light, ethane converted into ethyl chloride.
In the second process, ethyl chloride react with the aqueous potassium hydroxide to give ethanol.
In the third process, ethanol react with an oxidizing agent (Alkaline potassium permanganate) to give ethanoic acid.
The reaction are shown below.
C2H6 + Cl2 ---> C2H5Cl + HCl
C2H5Cl+KOH-> C2H5OH+ KCl.
C2H5OH ----KMnO4 ---> CH3COOH.
Answers
Since height is a basic physical property of length, the height of a classroom ceiling is expressed in meters, or meters, or meters.
What is physical property of length?
There are some physical characteristics of matter, such as length, mass, volume, weight, and so forth, that are dependent on the amount or size of the substance.
As the size or amount of the matter changes, so do these qualities of matter and their values.
A quality of matter that is unrelated to a change in its chemical makeup is called a physical property.
Density, color, hardness, melting and boiling points, and electrical conductivity are a few common examples of physical qualities.
The physical characteristics include color, phase, odor, and boiling point. Reactivity with oxygen is not a physical quality because it depends on the chemical makeup of the thing.
Therefore, meter is used to express the height of your classroom ceiling.
Learn more about length here:
#SPJ2
Hope that helps!
Answers
Pumice rocks are formed due to the air that is trapped in between the rocks, a body of magma spurting out with dissolved gas under pressure. As the magma cracks through the Earth’s surface, the sudden pressure drop causes the gas to come out of the solution. The flash of gas form the vent slices the magma and blows it out as a molten lather. The lather hastily solidifies as it flies into the air and falls back to Earth as pieces of pumice.
Answer:
Pumice is formed by lava coming into contact with water. This occurs most often with volcanoes near or under water. When the hot magma comes into contact with the water, rapid cooling and rapid de-pressurization creates bubbles by lowering the boiling point of lava.
Explanation:
B. reactivity
C. volatility
D. physical properties
Answers
composition?