Answer:
Water isn't combustible. There is nothing you can add to it other than gasoline that will make it even remotely combustible. Now, through electrolysis, it can be broken down into hydrogen and oxygen, which could be burned in an internal combustion engine.
The Answers is D because cell division purpose is grow and repair
<h3>
Answer:</h3>
0.5 moles/L or 0.5 M
<h3>
Explanation:</h3>
- Molarity is the concentration of a solution in moles per liter.
- It is calculated by;
Molarity = Number of moles ÷ Volume
In this case;
Volume = 125 mL
Mass of sodium nitrate = 5.31 g
We are required to calculate the molarity of sodium nitrate
<h3>Step 1: Calculate the number of moles of sodium nitrate </h3>
Moles = Mass ÷ Molar mass
Molar mass of sodium nitrate = 84.9947 g/mol
Therefore,
Moles of NaNO₃ = 5.31 g ÷ 84.9947 g/mol
= 0.0625 moles
<h3>Step 2: Molarity of sodium nitrate </h3>
Remember;
Molarity = Moles ÷ Volume
Volume of NaNO₃ = 0.125 L
Therefore;
Molarity = 0.0625 moles ÷ 0.125 L
= 0.5 Moles/L or 0.5 M
Thus; the concentration of sodium nitrate is 0.5M
Answer:
Explanation:
Hello!
In this case, since the first law of thermodynamics allows us to understand how the energy behaves when heat and work are involved during a process, we can mathematically define it as:
Whereas Q is the heat added to the system, W the work done by the system and ΔU the change in the internal energy, we can notice that since 97.0 J of work are done on the system it would be negative and the given off heat is also heat due to the used convention; therefore the change in its internal energy turns out:
Best regards!
I would say that the first answer choice makes sense since the charge of Oxygen is +2. But I may be wrong, try it out!