The mass number of an atom is obtained by totalling up the number of protons and neutrons there are for that atom.
The new volume of the bag will be 789.5 mL.
<u>Explanation:</u>
As per the Charles law, at constant pressure the volume of the gas is directly related to its temperature in Kelvin (K). That is as the temperature increases, the gas expands and vice-versa.
V1 = 250 ml
V2 = ?
T1 = 19° C
T2 = 60° C
Now we have to rewrite the equation to get the new volume as,
V2 =
=
<em> </em>= 789.47 ≈ 789.5 ml.
So the new volume of the bag will be 789.5 mL.
Answer:
18 km
Explanation:
To know the distance, you need to be clear in the concept of distance.
According to the physics, the distance is a measurement that refers to the fact of how much an object has move from one point to another.
In this case, we have a person named Steve and he's walking through several points.
To calculate the distance that he moved, you just need to sum all the values of distance. In this case, it's not neccesary to do calculations regarding the components of the x or y axis, because we are not talking about displacement, where it actually counts. But in this case, we just need all the covered distance that Steven walked since the beggining.
So, no more talk, let's do calculations:
D = 5 + 2 + 9 + 2 = 18 km
So the final answer would be:
<h2>
Distance = 18 km</h2>
Hope this helps
Answer:
Your answer will be *iron* as it is a element its number is 26
Answer: 58.305torr
Explanation:
We shall solve this using Raoult law.
Mathematical expression is;
Ptotal=XaPa + XbPb
Where Xa, Xb and Pa Pb are the mole fraction and vapor pressure of each component. we shall now solve this by steps
STEP1: Find the mole of benzene and Toluene;
Mole= mass÷molar mass
For toluene:
Mass= 398g
Molar mass= 92.1g/mol
Mole= 398÷92.1 =4.32mol
For benzene:
Mass=734g
Molar mass= 78.1g/mol
Mole= 734÷78.1 = 9.398mol
STEP2: Find the mole fraction of each component:
Let Xb be mole fraction for benzene
Let Xt be mole fraction for toluene.
Therefore; nB+nT = X
nB and nT are the mole of component B and T
X= 4.32+9.398= 13.718
Mole fraction for Toluene;
Xt= nT÷X
4.32÷13.718= 0.315
Mole fraction for benzene;
Xb= nB÷X
9.398÷13.718= 0.685
STEP3: Find the total total pressure;
We will use Rauolt law.
Ptotal= XbPb + XtPt
Pt = 22torr
Pb = 75torr
Therefore Ptotal is;
(0.315×22) + (0.685×75) = 6.93+51.375= 58.305
Therefore the total pressure is 58.305torr