How is the relative abundance calculated?
Answers
Related Questions
What does a mid ocean ridge record?
A chemist who is performing this reaction starts with 160.1 g of NH4NO3. The molar mass of NH4NO3 is 80.03 g/mol; the molar mass of water (H2O) is 18.01 g/mol. What mass, in grams, of H2O is produced?
Highlight the basic points in Lewis and Langmuir theory of electrovalency
What do chemists measure concentration with?
Answers
Answer:
The time saved on a ten mile trip by traveling at 60 mph instead of 55 mph is 54 seconds
Explanation:
Velocity is a physical quantity that expresses the relationship between the space traveled by an object, the time used for it and its direction. So velocity is the change in position of a body over time:
The mile per hour (mph) is a unit of speed measurement that expresses the number of international miles traveled per hour.
From the definition of speed it can be deduced that the time it takes to travel a certain distance at a constant velocity is:
velocity*time=position
Then, if the position is 10 miles and the velocity is 55 mph:
time=0.1818 hours
If 1 hour is 60 minutes, the time can be expressed as:
time=0.1818 hours*60 minutes= 10.90 minutes
The position is now constant at 10 miles, but the speed is 60 mph. So the time it takes to travel that distance at that speed is:
time=0.166 hours
If 1 hour is 60 minutes, the time can be expressed as:
time=0.166 hours*60 minutes= 10 minutes
To calculate the time you will save, the subtraction of both times obtained is performed:
10.9 minutes - 10 minutes= 0.9 minutes
If 1 minute is 60 seconds, the time can be expressed as:
0.9 minutes*60 seconds= 54 seconds
The time saved on a ten mile trip by traveling at 60 mph instead of 55 mph is 54 seconds
Time = Distance/Rate
for 60 mph
Time = 10 miles/60 mph
= 0.1666 * 60 minutes = 10 minutes
for 55 mph
Time = 10 miles/55 mph
= 0.181818 * 60 minutes = 10.90 minutes
Answers
Answers
For the given chemical reaction, 15 moles of sulfur are required to produce 15 moles of sulfur dioxide.
What is the balanced chemical equation?
A chemical equation can be defined as a representation of a chemical reaction in the form of symbols of the substances. A chemical equation consists of contributing reactants in the reaction, formed products, and their physical states.
The chemical equation in which the number of atoms of each element is equal on both sides of the equation is called a balanced chemical equation.
The law of conservation of mass follows by a balancing of a chemical equation therefore, the total mass of the elements on the reactant side must be equal to the total mass of elements on the product side.
Given, the chemical equation is: S + O₂ → SO₂
From the above equation, we can say that one mole of sulfur produces one mole of sulfur dioxide.
Given the moles of the sulfur dioxide = 15 moles
The moles of sulfur required to make 15 moles of sulfur = 15 moles
Therefore, 15 moles of sulfur are required for the given conditions.
Learn more about the balanced chemical equation, here:
#SPJ6
1 mole S ------------ 1 mole SO₂
? mole S ----------- 15.0 mole SO₂
S = 15.0 * 1 / 1
= 15 moles of S
hope this helps!
Answers
b. weight of the atom.
c. mass of the atom.
d. sum of the protons and neutrons in an atom.
Answers
because two different elements can have the same weight or the sum of protons and neutrons can be the same
but what truely differs an element from another and changes its chemistry, is the proton number
Answers
In every day life work is a job while in scientific terms the work is a change in energy due to applied force and displacement.
Work(Job) -
In every day life, work means an specific job that is assigned to people.
For example: I work as account assistant in the company.
Work:
In scientific terms the work is a product of applied force and displacement. It is measured in Joule.
For example- the engine did the 10 J of work.
Therefore, in every day life work is a job while in scientific terms the work is a change in energy due to applied force and displacement.
To know more about Work,
Ex: I work at Family Dollars it's my job(That's my everyday working job)
Work(Scientific Term) - Means when force acting on body to break it down in simpler terms, Lets say that you have a marker in your hand and you drop it you've just done work as as said before "Force acting on a body".