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padilas [110]
3 years ago
10

How do heater meals work?

Chemistry
1 answer:
drek231 [11]3 years ago
8 0

Answer:

The patented TRUE-TECH Self-Heating Technology is a simple combination of food grade iron and magnesium powder, salt, and water. When the contents of the water pouch are poured over the heater pad, the Food Heater releases enough heat to warm-up a pre-cooked meal 100 degrees Fahrenheit in approximately 10 minutes.

Explanation:

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(03.03 MC)
Anit [1.1K]

Answer: C

Explanation: Picture attached.

7 0
2 years ago
The vapor pressure of water is 23.76 mm Hg at 25 °C. A nonvolatile, nonelectrolyte that dissolves in water is sucrose. Calculate
MrRissso [65]

Answer : The vapor pressure of solution is 23.67 mmHg.

Solution:

As the relative lowering of vapor pressure is directly proportional to the amount of dissolved solute.

The formula for relative lowering of vapor pressure will be,

\frac{p^o-p_s}{p^o}=\frac{w_2M_1}{w_1M_2}

where,

p^o = vapor pressure of pure solvent  (water) = 23.76 mmHg

p_s = vapor pressure of solution= ?

w_2 = mass of solute  (sucrose) = 12.25 g

w_1 = mass of solvent  (water) = 176.3 g

M_1 = molar mass of solvent (water) = 18.02 g/mole

M_2 = molar mass of solute (sucrose) = 342.3 g/mole

Now put all the given values in this formula ,we get the vapor pressure of the solution.

\frac{23.76-p_s}{23.76}=\frac{12.25\times 18.02}{176.3\times 342.3}

p_s=23.67mmHg

Therefore, the vapor pressure of solution is 23.67 mmHg.

7 0
3 years ago
According to the following balanced equation, 2 formula units of Iron (III) Oxide (Fe2O3) can be formed by reacting 4 atoms of i
-Dominant- [34]
You have to use Avogadro's number (6.02x10^23 molecules/mole) to find the number of moles each reactant starts off with.
moles of Fe and O₂:
12 atoms/(6.02x10^23 atoms/mole)=1.99x10^-23 mol Fe
6 molecules/(6.02x10^23 molecules/mole)=9.967x10^-24 mol <span>O₂
</span>Then you find the limiting reagent by finding how much product each given amount of reactant can make.  Which ever one produces the least amount of product is the limiting reagent.
amount of Fe₂O₃ produced:
<span>(1.99x10^-23 mol Fe)x(2mol/4mol)= 9.967x10^-24mol Fe</span>₂O₃<span> 
</span>(9.967x10^-24 mol O₂)x(2mol/3mol)= 6.645x10^-24 mol Fe₂O₃<span> 
</span>since oxygen produces the leas amount of product, oxygen is the limiting reagent.  since we know that oxygen is the limiting reagent we can use the amount of product formed with oxygen to find the amount of iron used.
6.645x10^-24 mol Fe₂O₃x(4mol/2mol)=1.329x10^-23 mol Fe consumed
<span> find the amount left over by subtracting the original amount of Fe by the amount consumed in the reaction.
</span>1.993x10^-23-1.329x10^-23= 6.645x10^-23mol Fe left
 find the number of atoms by multiplying that by Avogadro's number.
<span>(6.645x10^-23mol)x(6.02x10^23 atoms/mol)=4 atoms
</span>therefore 4 atoms of Fe will be left over after the reaction happens.

I hope this helps.
8 0
3 years ago
Read 2 more answers
Which of these solutes raises the boiling point of water the most?
Vlad [161]
I think the answer would be Ionic sodium phosphate (Na3PO4) because it has the greatest boiling point elevation.
7 0
3 years ago
Read 2 more answers
What happens ????????
ivolga24 [154]
Correct me if I wrong but I think it's "c"
5 0
3 years ago
Read 2 more answers
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