Answer:
ddndnndndndkzkaoaoowowjebd
Explanation:
nzndbdnxkskksksjsjsjsjsiisisjs
Answer:
6.57 L
Explanation:
First, calculate the <em>moles of hydrogen</em> produced, then use the Ideal Gas Law to calculate the <em>volume of hydrogen</em>.
Step 1. Write the <em>chemical equation</em>.
: 22.99
2Na + H₂O ⟶ 2NaOH + H₂
Step 1. Convert <em>grams of Na</em> to <em>moles of Na</em>
Step 2. Use the molar ratio of H₂:Na to convert <em>moles of Na</em> to <em>moles of H₂</em>.
Step 3. Use the Ideal Gas Law to calculate the <em>volume of hydrogen</em>.
<em>pV = nRT</em>
Answer: for an object or gas or liquid to float in another there must be a difference in density
Explanation:
Helium has a density of 0.18 kg/m³ and air has a density of 1.29 kg/m^³. If a balloon is filled with helium it will float in air due to density differences
Archimedes' principle states that the upward buoyant force that is exerted on a body immersed in a fluid, whether fully or partially submerged, is equal to the weight of the fluid that the body displaces
From the ideal gas law, PV = nRT, we can rearrange the equation to solve for T given the other parameters.
T = PV/nR
where P = 0.878 atm, V = 1.20 L, n = 0.0470 moles, and R = 0.082057 L•atm/mol•K. Plugging in our values, we obtain the temperature in Kelvin:
T = (0.878 atm)(1.20 L)/(0.0470 mol)(0.082057 L•atm/mol•K)
T = 273 K
So, the second answer choice would be correct.