Density is given by the equation D=m/V, were D is density, m is mass in grams, and V is volume in cubic centimeters.
In this problem, we have density and we have mass so we can plug into the equation and solve for V.
38.6=270.2/V
<em>*Multiply both sides by V*</em>
38.6V=270.2
<em>*Divide both sides by 38.6*</em>
V=7
The volume of the gold nugget is 7cm3.
Hope this helps!!
You have to do a report :
![\frac{E_f}{E_i} = \frac{47,5}{125} = 0,38](https://tex.z-dn.net/?f=%20%5Cfrac%7BE_f%7D%7BE_i%7D%20%3D%20%20%5Cfrac%7B47%2C5%7D%7B125%7D%20%3D%200%2C38)
So
the truck efficiency is 38%.
Answer:
Initially
of nitrogen dioxide were in the container .
Explanation:
Volume of the container at low pressure and at room temperature =![V_1=3.4 L](https://tex.z-dn.net/?f=V_1%3D3.4%20L)
Number of moles in the container = ![n_1](https://tex.z-dn.net/?f=n_1)
After more addition of nitrogen gas at the same pressure and temperature.
Volume of the container after addition = ![V_2=5.11 L](https://tex.z-dn.net/?f=V_2%3D5.11%20L)
Number of moles in the container after addition=![n_2=2.28\times 10^{-2} mol](https://tex.z-dn.net/?f=n_2%3D2.28%5Ctimes%2010%5E%7B-2%7D%20mol)
Applying Avogadro's law:
(at constant pressure and temperature)
![\frac{V_1}{n_1}=\frac{V_2}{n_2}](https://tex.z-dn.net/?f=%5Cfrac%7BV_1%7D%7Bn_1%7D%3D%5Cfrac%7BV_2%7D%7Bn_2%7D)
![n_1=\frac{V_1\times n_2}{V_2}=\frac{3.4 L\times 2.28\times 10^{-2} mol}{5.11 L}](https://tex.z-dn.net/?f=n_1%3D%5Cfrac%7BV_1%5Ctimes%20n_2%7D%7BV_2%7D%3D%5Cfrac%7B3.4%20L%5Ctimes%202.28%5Ctimes%2010%5E%7B-2%7D%20mol%7D%7B5.11%20L%7D)
![n_1=1.51\times 10^{-2} mol](https://tex.z-dn.net/?f=n_1%3D1.51%5Ctimes%2010%5E%7B-2%7D%20mol)
Initially
of nitrogen dioxide were in the container .
Answer:
I think it the carbon 14 which is a half life of 5730 because in 4.5billion years ago I don't think any human being existed on earth I'm not sure I hope that I helped you and good luck .
✡ Answer: 1.23*10^2 ✡
- - Add a decimal at the end (to the right) and count till you get to the first number.
So now you have 1.23
- - Now you always want to times it by 10 to the power of how many times you moved it over, in this case, 2
Final answer: 1.23*10^2
✡Hope this helps✡