The density of the metal object=6.0
Given:
Volume of the metal object=1.5ml
Mass of the metal object=9.0g
To find:
Density of the metal object
<u>Step by Step Explanation:
</u>
Solution:
According to the formula, Density of the metal object can be calculated as
Where, m=mass of the metal object
=density of the metal object
v=volume of the metal object
We know the values of v=1.5ml and m=9.0g
Substitute these values in the above equation we get
=9.0/1.5
=6.0
Result:
Thus the density of the metal object is 6.0
Answer:
84.63924
Explanation:
one moles equals 40.30440
Answer: The molar concentration of 
in the solution is 0.2 M
Explanation:
Molarity of a solution is defined as the number of moles of solute dissolved per Liter of the solution.
where,
n= moles of solute =
= volume of solution in ml = 100 ml
As 1 mole of 
gives 2 moles of
Thus 0.1 moles of gives = 
moles of
The molar concentration of in the solution is 0.2 M
Answer:
The answer is
<h2>464 g</h2>
Explanation:
The mass of a substance when given the density and volume can be found by using the formula
<h3>mass = Density × volume</h3>
From the question
volume of solution = 80 mL
density = 5.80 g/mL
The mass is
mass = 80 × 5.8
We have the final answer as
<h3>464 g</h3>
Hope this helps you
The mass number of the element is 79 , atomic number is 34 and number of neutron is 45
<h3>What is Atomic Number ?</h3>
The number of proton which is used to separate one element from the other element is called Atomic Number. It is denotes as symbol Z.
What is Atomic Notation ?
The atomic number is the number of proton which is present in the nucleus of an atom. It is represented as 
.
where
X is the element
Z is the atomic number of that element.
A is the mass number of that isotope.
Now,
A = Z + N
79 = 34 + N
79 - 34 = N
45 = N
Thus from the above conclusion we can say that mass number of the element is 79 , atomic number is 34 and number of neutron is 45
Learn more about the Atomic Number here: brainly.com/question/487717
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