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Bond [772]
3 years ago
5

Which type of chemical reaction does this equation exemplify?

Chemistry
2 answers:
tatuchka [14]3 years ago
5 0
<span>combustion is the chemical reaction</span>
Svetradugi [14.3K]3 years ago
5 0
The chemical reaction that this equation exemplifies is Double Replacement. As in a double replacement reaction, the atoms of the compounds are switched and are displaced with other atoms of their respective elements to form new compounds.
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using information in titles of appendices b and c, calculate the minimum grams of propane, C3H8 (g), that must be combusted to p
Lubov Fominskaja [6]

<u>Given:</u>

Mass of ice = mass of water = 5.50 kg = 5500 g

Temperature of ice = -20 C

Temperature of water = 75 C

<u>To determine:</u>

Mass of propane required

<u>Explanation:</u>

Heat required to change from ice to water under the specified conditions is:-

q = q(-20 C to 0 C) + q(fusion) + q (0 C to 75 C)

  = m*c(ice)*ΔT(ice) + m*ΔHfusion + m*c(water)*ΔT(water)

  = 5500[2.10(0-(-20)) + 334 + 4.18(75-0)] = 3792 kJ

The enthalpy change for the combustion of propane is -2220 kJ/mol

Therefore, the number of moles of propane corresponding to the required energy of 3792 kJ = 1 mole * 3792 kJ/2220 kJ = 1.708 moles of propane

Molar mass of propane = 44 g/mol

Mass of propane required = 1.708 moles * 44 g/mol = 75.15 g

Ans: 75.15 grams of propane must be combusted.



4 0
4 years ago
What are the coefficients that will balance the skeleton equation​
lisabon 2012 [21]

Answer:

When the following equation is balanced, what is the coefficient for HCl? Mg(s) + HCl(aq) -> MgCl2(aq) + H2(g) . 2. What are the coefficients that will balance the skeleton equation below? AlCl3 + NaOH -> Al(OH)3 + NaCl.

5 0
3 years ago
Explain how science can help you make more informed decisions about buying products that make incredible claims.
LenaWriter [7]
You will know;
1. know what products are 
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7 0
3 years ago
A balloon with volume of 2.0l is filled with gas at 3 atmosphere. If the pressure were reduced to 0.5 atmosphere without the cha
solong [7]
Answer: 12L

Explanation:

To find the correct volume of the balloon, we can use the mathematical representation of Boyle’s law which states that a gas’s volume is inversely proportional to its pressure (as one increases the other decreases).

The equation for it is P1 * V1 = P2 * V2 where P1 and V1 represent the initial pressure and volume of the gas and P2 and V2 represent its changed temperature and volume.

In this case, the initial pressure of the gas inside the balloon is 3atm while its initial volume is 2.0L. Its pressure is then reduced to 0.5atm.

If we apply this information to the equation for Boyle’s law, we get
2L * 3atm = 0.5atm * V2.

Through arithmetic, we find that
6 = 0.5atm * V2
6/0.5atm = V2
12L = V2.

So, the volume of the balloon is 12L.

Hope this helps!
7 0
4 years ago
Words to equation and balancing
Flura [38]

Answer:

Pb(NO₃)₂ ₍aq₎ + 2 KI ₍aq₎  ------------> PbI₂ ₍s₎ + 2 KNO₃ ₍aq₎

Explanation:

Chemical Equation:

lead(II) nitrate: Pb(NO₃)₂

potassium iodide: KI

lead(II) iodide: PbI₂

Potassium nitrate: KNO₃

Pb(NO₃)₂ ₍aq₎ + KI ₍aq₎  ------------> PbI₂ ₍s₎ + KNO₃ ₍aq₎

Balancing the equation:

For balancing the equation all atoms of the elements on both sides of equation i.e reactants and products are equal.

So balancing the above equation we get:

Pb(NO₃)₂ ₍aq₎ + 2 KI ₍aq₎  ------------> PbI₂ ₍s₎ + 2 KNO₃ ₍aq₎

5 0
3 years ago
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