Answer:
2.24 grams of CO2, assuming the reaction involves LiOH reacting with CO2.
Explanation:
0 grams, if you have a bottle of LiCO3 on the shelf.
Or should we assume we are reacting CO2 with a lithium compound?
We need to start with a balanced equation. That is why I added the perceptive, (but crass), remark of "get it from the shelf."
Here is one reaction that could be useful involving <em><u>lithium hydroxide</u></em>:
2LiOH + CO2 = Li2CO3 + H2O
This tells us that 1 mole of CO2 will produce 1 mole of Li2CO3. Lithium carbonate has a molar mass of 73.9 grams/mole. If we want 3.75 grams of the grimy stuff, we'll need (3.75g/73.9 g/mole) or 0.0508 moles of Li2CO3.
We'll need the same number of moles of CO2 to produce the Li2CO3, 0.0508 moles of CO2.
The molar mass of CO2 is 44 grams/mole. 0.0508 moles of CO2 is (0.0508 moles)*(44 grams/mole) = 2.24 grams of CO2.
If the reaction is different from the one I assumed here, do the same calculations using that balanced equation.
Answer:
Because a glass window is harder than a fingernail, a glass window would have a higher number on Mohs hardness scale
Explanation:
Answer:
1 mol of water is produced in those conditions.
Explanation:
The reaction to produce water between H₂ and O₂ is this:
2H₂ + O₂ → 2H₂O
We don't have the amount of hydrogen, so we have to think that is in excess.
Let's work with oxygen.
Ratio is 1:2
For 0.5 mole of oxygen, I will make the double of moles of water.
Observe a blue light be wavelength flame test during
Answer:
B) we will convert the 10 g of NaCl into moles.
Explanation:
Molarity is used to describe the concentration of solution. It tells how many moles are dissolve in per litter of solution.
Formula:
Molarity = number of moles of solute / L of solution
we will convert the 10 g of NaCl into moles.
Number of moles of NaCl:
Number of moles = mass/molar mass
Number of moles = 10 g/ 58.44 gmol
Number of moles = 0.17 mol
1 Kg = 1 L
Molarity = 0.17 mol / 2 L
Molarity = 0.085 mol/L
Molarity = 0.085 M
