Answer:
Sound energy is a form of energy that can be heard by humans.
Ex- buzzing bee, balloon popping
Explanation:
1s^2 2s^2 2p^6
Neon is element number 10, so a neon atom has 10 electrons.
The <em>n </em>= 1 shell consists of one s orbital.
The remaining eight electrons fill the <em>n </em>= 2 shell. The <em>n</em> = 2 shell consists of an s subshell with a single s orbital and a p subshell with three p orbitals.
Each orbital can hold a maximum of two electrons.
Thus, there are two 1s electrons, two 2s electrons, and six 2p electrons.
Therefore, the orbital notation (or <em>electron configuration</em>) of neon is
1s^2 2s^2 2p^6.
Answer:
1. It is stoichiometric.
2. O2 is the limiting reactant.
3. 9.0 g of C2H6 remain unreacted.
4. 17.6 g of CO2.
5. 85.2%.
Explanation:
Hello there!
In this case, for the given chemical reaction:
We can see that:
1. It is stoichiometric and is balanced because the reactants yields the products according to the law of conservation of mass.
2. In this part, it is possible to calculate the moles of ethane by using its molar mass:
And the moles of oxygen by knowing that one mole is contained in 22.4 L at STP:
Thus, by calculating the moles of carbon dioxide product by each reactant, we can identify the limiting one:
Thus, since oxygen yields the fewest moles of CO2 product, we infer it is the limiting reactant.
3. In this part, we calculate the mass of C2H6 that actually react first:
Thus, the leftover of ethane (C2H6) as the excess reactant is:
4. Since 0.4 moles of carbon dioxide were produced, we use its molar mass to calculate the mass as its theoretical yield:
5. Finally, the percent yield is gotten by dividing the actual yield by the theoretical one:
Best regards!
False.
Heat speeds up the motion of particles when it is added to the object/substance the atoms loosen up and move/vibrate faster and more. But when subtracting heat from the object/substance, the atoms move/vibrate slower. This is called the Kinetic theory of matter.