Answer:
The exposure time that equals 750 is 3.4 hr
Explanation:
The given formula is:
![[tex]T=.0002*x^{2} -.316*x+127.9](https://tex.z-dn.net/?f=%5Btex%5DT%3D.0002%2Ax%5E%7B2%7D%20-.316%2Ax%2B127.9)
[/tex]
In the formula:
T= exposure time
x= carbon monoxide present in ppm
So, to calculate the exposure time when carbon monoxide is 750ppm, you should replace the "x" by 750.
![[tex]T=.0002*750^{2} -.316*750+127.9](https://tex.z-dn.net/?f=%5Btex%5DT%3D.0002%2A750%5E%7B2%7D%20-.316%2A750%2B127.9)
[/tex]
T=3.4hr
The mass of the solute required is 250.25 g.
<h3>What is the mass of the solute?</h3>
We know that the number of moles of the solute can be used to obtain the mass of the solute that is required. We can now try to find the mass of the solute that is required.
Concentration of the solution = 0.350M
Volume of the solution = 6.5 L
Number of moles of the solute = 0.350M * 6.5 L
= 2.275 moles
We now have the mass of the solute as;
2.275 moles * 110 g/mol
= 250.25 g
Th measured mass of the solute that we would have to use is 250.25 g.
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Missing parts;
A chemist wants to make 6.5 L of a .350M CaCl2 solution. What mass of CaCl2(in g) should the chemist use?
Earth takes in thermal energy from the Sun in a process called thermal radiation.
Sunlight strikes Earth's surface at different angles. This angle is called the angle of insolation.
<h3>What is thermal energy?</h3>
Thermal energy refers to the energy contained within a system that is responsible for its temperature.
Earth takes in thermal energy from the Sun in a process called thermal radiation.
Sunlight strikes Earth's surface at different angles. This angle is called the angle of insolation.
Learn more about thermal energy here:
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Answer:
What is the specific heat for the aluminum wire?
0.82
What is the specific heat for the steel wire?
0.47
What is the specific heat for the lead pellets?
0.25
Explanation:
Answer:
.00352mol/L
Explanation:
molarity (concentration) = number of moles / volume of solvent (in L)
M = .99g / 56.108g/mol / .5L
M = .0176mol / .5L
M = .00352mol/L
