Answer:
15 mL of O₂.
Explanation:
The balanced equation for the reaction is given below:
2H₂O —> 2H₂ + O₂
From the balanced equation above,
2 mL of H₂O reacted to produce 2 mL of H₂ and 1 mL of O₂.
Next, we shall determine the volume of H₂O needed to produce 30 mL of H₂. This can be obtained as follow:
From the balanced equation above,
2 mL of H₂O reacted to produce 2 mL of H₂.
Therefore, 30 mL of H₂O will also react to produce 30 mL of H₂.
Thus, 30 mL of H₂O is needed for the reaction.
Finally, we shall determine the volume of O₂ produced from the reaction. This can be obtained as follow:
From the balanced equation above,
2 mL of H₂O reacted to produce 1 mL of O₂.
Therefore, 30 mL of H₂O will react to produce = (30 × 1)/2 = 30/2 = 15 mL of O₂.
Thus, 15 mL of O₂ were produced from the reaction.
how many grams are in 5.12 moles of Al
Answer:
138.14547456
Explanation:
How many moles Aluminium in 1 grams? The answer is 0.037062379468509.
We assume you are converting between moles Aluminium and gram.
You can view more details on each measurement unit:
molecular weight of Aluminium or grams
The molecular formula for Aluminium is Al.
The SI base unit for amount of substance is the mole.
1 mole is equal to 1 moles Aluminium, or 26.981538 grams.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between moles Aluminium and gram.
Answer:
[tex]\boxed {\boxed {\sf About \ 138 \ grams \ of \ aluminum}}[/tex]
Explanation:
To convert from moles to grams, we must use molar mass.
This can be found on the Periodic Table, so look for the symbol for aluminum: Al
Al: 26.981538 g/molWe can use this number as a ratio.
[tex]\frac { 26.981538 \ g \ Al} { 1 \ mol \ Al}[/tex]
Multiply by the given number of moles: 5.12
[tex]5.12 \ mol \ Al *\frac { 26.981538 \ g \ Al} { 1 \ mol \ Al}[/tex]
Multiply. The moles of aluminum will cancel.
[tex]5.12*\frac { 26.981538 \ g \ Al} { 1}[/tex]
[tex]138.145475 \ g \ Al[/tex]
Round. The original measurement of moles has 3 significant figures, so our answer must also have 3 sig figs.
For the number we calculated, that is the ones place. The 1 in the tenth place tells us to leave the 8.
[tex]138 \ g \ Al[/tex]
There is about 138 grams of aluminum in 5.12 moles.
Which force is equal but opposite to the one shown?
Answer:B
Explanation:
A simple circuit with a battery connected to a buzzer by electrical wires is placed on a table. When the buzzer sounds, the table begins to ratte. Which form of energy makes the table rattle?
chemical
ОО
electrical
heat
mechanical
Answer:
Mechanical
Explanation:
mechanical energy:
energy that an object has
because of its motion or
position