Answer: The mass of the sample is 1264.800 kg.
Explanation:
Mass of the piece of copper = m
Volume of the copper price = ![130 L=130,000 cm^3](https://tex.z-dn.net/?f=130%20L%3D130%2C000%20cm%5E3)
![1 L= 1,000 cm^3](https://tex.z-dn.net/?f=1%20L%3D%201%2C000%20cm%5E3)
![Density=8.96 g/cm^3=\frac{Mass}{Volume}=\frac{Mass}{130,000 cm^3}](https://tex.z-dn.net/?f=Density%3D8.96%20g%2Fcm%5E3%3D%5Cfrac%7BMass%7D%7BVolume%7D%3D%5Cfrac%7BMass%7D%7B130%2C000%20cm%5E3%7D)
![m=Density\times Volume=8.96 g/cm^3\times 130,000=1,264,800 g](https://tex.z-dn.net/?f=m%3DDensity%5Ctimes%20Volume%3D8.96%20g%2Fcm%5E3%5Ctimes%20130%2C000%3D1%2C264%2C800%20g)
m = 1,264,800 g = 1,264.800 kg (1 kg = 1000 g)
The mass of the sample is 1264.800 kg.
<u>Answer</u><u>:</u>
Hydrocarbon and oxygen
<u>Explanation</u><u>:</u>
"a substance reacts with oxygen gas, it must involve O² as one of the reactants."
Using this, we can confirm Hydrocarbon and oxygen is a valid one.
Answer:
the relation of two different forms of the same substance (such as two allotropic forms of tin) that have a definite transition point and can therefore change reversibly each into the other — compare monotropy.
Answer: A photon of energy was released.
Explanation: The energy of the orbitals keep on increasing as the size of the orbitals keep on increasing or the value of n keeps on increasing.
The electrons absorb energy when they are irradiated or put at high temperatures and move to higher energy states. The electrons then get back to their ground state by releasing energy in the form of radiations. Thus when an electron move from n = 2 to shell n = 1, the absorbed energy is given off in form of photons of energy.
Energy is released or absorbed in the form of discrete packets of energy called as photons.
Answer:
<h3>The answer is 25 mL</h3>
Explanation:
The new volume can be found by using the formula for Boyle's law which is
![P_1V_1 = P_2V_2](https://tex.z-dn.net/?f=P_1V_1%20%3D%20P_2V_2)
where
P1 is the initial pressure
P2 is the final pressure
V1 is the initial volume
V2 is the final volume
Since we are finding the new volume
![V_2 = \frac{P_1V_1}{P_2} \\](https://tex.z-dn.net/?f=V_2%20%3D%20%20%5Cfrac%7BP_1V_1%7D%7BP_2%7D%20%20%5C%5C)
From the question we have
![V_2 = \frac{75 \times 1.5}{4.5} = \frac{112.5}{4.5} \\](https://tex.z-dn.net/?f=V_2%20%3D%20%20%5Cfrac%7B75%20%5Ctimes%201.5%7D%7B4.5%7D%20%20%3D%20%20%5Cfrac%7B112.5%7D%7B4.5%7D%20%20%5C%5C%20)
We have the final answer as
<h3>25 mL</h3>
Hope this helps you