Answer:
Astronomers study light from distant objects. ... Optical telescopes collect visible light. The three main types are reflecting telescopes, refracting telescopes, and catadioptric telescopes. Radio telescopes collect and focus radio waves from distant objects.
<h3><u>Answer;</u></h3>
= 13.8 moles
<h3><u>Explanation and solution;</u></h3>
- The equation for the reaction is;
<em>16HCl + 2KMnO4 ------> 2KCl + 2MnCl2 + 5Cl2 + 8H2O
</em>
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The equation is balanced and gives proper stoichiometry. This is a redox reaction involving HCl and KMnO4.
- According to stoichiometry of the reaction 2 moles of KMnO4 will produce 8 moles of H2O.
- That means 1 mol of KMnO4 will produce exactly 4 moles of H2O (since 8/2 = 4).
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Therefore, <em>3.45 moles of KMnO4, will produce;</em>
<em> 3.45 moles × 4 = 13.8 moles</em>
<em>Hence, when 3.45 moles of KMnO4 react, 13.8 moles of water will be produced.</em>
The electromagnet and the permanent magnet -- interact with each other as any two magnets do. The positive end of the electromagnet is attracted to the negative pole of the permanent magnetic field, and the negative pole of the electromagnet is repelled by the permanent magnet's negative pole
<span>1 mole of any substance contains 6.02 x 10^23 particles.
Hence 0.25 mole of any has will contain 0.25 x 6.02 x 10^23 molecules of that gas
They cannot contain the same no. of atoms as 1 molecule of CO2 contains 3 atoms, 1 molecule H2 contains 2 molecules, and 1 molecule of NH3 contain 4 atoms
1 molecule of any gas will occupy 22.4 L at STP
hence 0.25 mol of all of these gases accupy the same volume
all of these molecules have different molar masses. thus their g.f.w cannot be same
Your answer is that they will occupy the same volume, and the same number of molecules</span>
Answer:
Earth's average surface gravity is about 9.8 meters per second per second. When an object is tossed off a building top or a cliff apex, for instance, it accelerates toward the ground at 9.8 meters per second per second. The Moon's surface gravity is about 1/6th as powerful or about 1.6 meters per second per second,
Explanation: