Answer:
Noble gas is Ne
Explanation:
Let's make the expression for the Ideal Gases Law at STP
Temperature = 273K
Pressure = 1 atm
1 atm . 1.409L = n . 0.0821 L∙atm/mol∙K . 273K
1.409 L.atm / (0.0821 L∙atm/mol∙K . 273K) = n
0.0628 mol = n
Let's calculate the molar mass to find out the noble gas
1.269 g / 0.0628 m = 20.2 g/m
BE CAREFUL BECAUSE THIS ARE WRONG IN THE STATEMENT.
12.69 g
14.09 L
Hey there!
The atomic mass is the sum of the protons and electrons.
The charge of an atom is the difference between protons and electrons.
So, the number of protons is p, and p - 11 = -1.
Add 11 to each side and get p = 10. The atom has 10 protons.
The atom has 10 protons and 8 neutrons, the sum of the two is the atomic mass.
10 + 8 = 18
The atom has an atomic mass of 18.
Hope this helps!
The net force = -5 N
The direction : to the left(negative sign)
<h3>Further explanation
</h3>
Net force : the sum of all forces acting on an object
Force is a vector quantity that has both magnitude and direction,
We agree that the move up and to the right is a positive sign, while down and to the left is a negative sign.
The direction of the force (horizontal motion) is to the right (+32 N), and to the left (-37 N), so the net force :
Answer:
Cells are the "building blocks for all living things." Without cells, we couldn't survive. Cells do many important things. Some of the things they can do are taking in food nutrients, frame our bodies, and change the food nutrients into energy.
