<u>Question 1</u>
The formula mass of methanol is 
g/mol.
Therefore, in 5.0 grams of methanol, there are 
moles.
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<u>Question 2</u>
The formula mass of copper(II) carbonate is 
g/mol.
This means that in 9.0 grams of copper(II) carbonate, there are 
moles.
Using Avogradro's number, there are 
molecules.
<u>Question 3</u>
The formula mass of cyclohexane is 
g/mol.
So, 3.0 grams of cyclohexane is the same as 
moles.
<u>Question 4</u>
The formula mass of benzene is 
g/mol.
This means that 4.00 moles of benzene has a mass of 
grams.
<u>Question 5</u>
1000 atoms of calcium is the same as 
moles.
This is equal to 
grams.
Answer:
Explanation:
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In this case, since the combustion of the hamburger released 335.4 kcal of energy and that energy is received by the calorimeter, we can write:
And the heat of the calorimeter is written in terms of the temperature change and the calorimeter constant:
Thus, given the released heat by the hamburger due to its combustion and the temperature change, Cv for the calorimeter turns out:
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Answer:
8.28 MPa
Explanation:
From the question given above, the following data were obtained:
Radius (r) = 2×10¯³ m
Force applied (F) = 104 N
Pressure (P) =?
Next, we shall determine the area of the nail (i.e circle). This can be obtained as follow:
Radius (r) = 2×10¯³ m
Area (A) of circle =?
Pi (π) = 3.14
A = πr²
A = 3.14 × (2×10¯³)²
A = 3.14 × 4×10¯⁶
A = 1.256×10¯⁵ m²
Next, we shall determine the pressure. This can be obtained as follow:
Force applied (F) = 104 N
Area (A) = 1.256×10¯⁵ m²
Pressure (P) =?
P = F / A
P = 104 / 1.256×10¯⁵
P = 8280254.78 Nm¯²
Finally, we shall convert 8280254.78 Nm¯² to MPa. This can be obtained as follow:
1 Nm¯² = 1×10¯⁶ MPa
Therefore,
8280254.78 Nm¯² = 8280254.78 Nm¯² × 1×10¯⁶ MPa / 1 Nm¯²
8280254.78 Nm¯² = 8.28 MPa
Thus, the pressure exerted on the wall is 8.28 MPa
Answer:you could forget to charge the wireless charger but I have one and there’s never a problem so you probably don’t have to worry
Explanation:
