Just you think about it, a shower with hot water, you step out and it is cold, this happens because you have a enclosed space with the heat, so you get use to the heat, you step out it is cold. Hope this helped!
Answer:
Can you get a closer picture, then I can help! It looks like it says something on rain, hail and something else. I cant see it though! :)
Explanation:
Answer:
154 g
Explanation:
Step 1: Write the balanced decomposition equation
2 NaN₃(s) ⇒ 2 Na(s) + 3 N₂(g)
Step 2: Calculate the moles corresponding to 79.5 L of N₂ at STP
At STP, 1 mole of N₂ occupies 22.4 L.
79.5 L × 1 mol/22.4 L = 3.55 mol
Step 3: Calculate the number of moles of NaN₃ needed to form 3.55 moles of N₂
The molar ratio of NaN₃ to N₂ is 2:3. The moles of NaN₃ needed are 2/3 × 3.55 mol = 2.37 mol.
Step 4: Calculate the mass corresponding to 2.37 moles of NaN₃
The molar mass of NaN₃ is 65.01 g/mol.
2.37 mol × 65.01 g/mol = 154 g
Answer: it has ice in it and that makes the things you use with the cold pack colder
Answer:
Zn + H2SO4 → ZnSO4 + H. 2
Explanation:
