<span>Answer: yes, when calcium hydroxide powder is placed into a hydrochloric acid solution, aqueous calcium hydroxide and water are formed.
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Explanation:
</span><span>1) Calcium hydroxide is a base whose chemical formula is: Ca(OH)₂</span>
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2) Hydrochloric acid is the acid with chemical formula HCl
</span><span>3) Acids and bases react in a double replacement reaction forming salt plus water: Acid + Base → salt + water
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4) The specific chemical equation for these reactants is:
</span><span>Ca(OH)₂ (s) + 2HCl(aq) → CaCl₂ (aq) + 2H₂O(l)</span>
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</span><span>5) CaCl₂ is calcium chloride, a salt, and H₂O is water
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Answer:
The correct answer is biosphere.
Answer:
90 neutrons
Explanation:
#neutrons = Atomic Mass - Atomic Number
= 170 - 80 = 90 neutrons
The given reaction is a double replacement reaction; option B.
<h3>What is a chemical reaction?</h3>
A chemical reaction is a reaction in which chemical changes occurs in the atoms of reactants which results in the formation pf products.
The given reaction is as follows:
- Ionic compound + Ionic compound ---> Ionic compound + Ionic compound
Since exchange of ions occur, it is a double replacement reaction.
Learn more about double replacement reaction at: brainly.com/question/5564504
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Solution :
The sun emits =
J of energy per second
= ![$4 \times 10^{26} \ kg m^2 s^{-3} $](https://tex.z-dn.net/?f=%244%20%5Ctimes%2010%5E%7B26%7D%20%5C%20kg%20m%5E2%20s%5E%7B-3%7D%20%24)
We know, ![$1 \ J =1 \ kg \ m^2 / s^2 $](https://tex.z-dn.net/?f=%241%20%5C%20J%20%3D1%20%5C%20kg%20%5C%20m%5E2%20%2F%20s%5E2%20%24)
, where C = ![$3 \times 10^8 \ m/s$](https://tex.z-dn.net/?f=%243%20%5Ctimes%2010%5E8%20%5C%20m%2Fs%24)
![$E=mC^2$](https://tex.z-dn.net/?f=%24E%3DmC%5E2%24)
![$J=M(M/s)^2$](https://tex.z-dn.net/?f=%24J%3DM%28M%2Fs%29%5E2%24)
Dividing both sides by 1 second
![$\frac{J}{s}=M \times m^2 s^{-3}$](https://tex.z-dn.net/?f=%24%5Cfrac%7BJ%7D%7Bs%7D%3DM%20%5Ctimes%20m%5E2%20s%5E%7B-3%7D%24)
Then, ![$4 \times 10^{26} \ J/s = M \times m^2 s^{-3} \times (3 \times 10^8)^2$](https://tex.z-dn.net/?f=%244%20%5Ctimes%2010%5E%7B26%7D%20%5C%20J%2Fs%20%3D%20M%20%5Ctimes%20m%5E2%20s%5E%7B-3%7D%20%5Ctimes%20%283%20%5Ctimes%2010%5E8%29%5E2%24)
![$M = \frac{4 \times 10^{26}}{9 \times10^{16}}$](https://tex.z-dn.net/?f=%24M%20%3D%20%5Cfrac%7B4%20%5Ctimes%2010%5E%7B26%7D%7D%7B9%20%5Ctimes10%5E%7B16%7D%7D%24)
![$M=4.44 \times 10^9 \ kg$](https://tex.z-dn.net/?f=%24M%3D4.44%20%5Ctimes%2010%5E9%20%5C%20kg%24)
Now according to the information, 99.3% hydrogen.
If 0.7 % of hydrogen produce =
J of energy per second
Then 1% of hydrogen will produce =
J energy per second
So, 100% of hydrogen will produce =
J energy per second
=
J energy per second
Mass of hydrogen undergo fusion in sun per second
![$E=mC^2$](https://tex.z-dn.net/?f=%24E%3DmC%5E2%24)
Similarly, ![$\frac{J}{s}=M \times m^2 s^{-3}$](https://tex.z-dn.net/?f=%24%5Cfrac%7BJ%7D%7Bs%7D%3DM%20%5Ctimes%20m%5E2%20s%5E%7B-3%7D%24)
![$5.714 \times 10^{28} \ J/s = M \times (3 \times 10^8)^2 \ m^2 \ s^{-3}$](https://tex.z-dn.net/?f=%245.714%20%5Ctimes%2010%5E%7B28%7D%20%5C%20J%2Fs%20%3D%20M%20%5Ctimes%20%283%20%5Ctimes%2010%5E8%29%5E2%20%5C%20m%5E2%20%5C%20s%5E%7B-3%7D%24)
kg
kg