Answer: Gravity.
Explanation:
Newton realized that the reason the planets orbit the Sun is related to why objects fall to Earth when we drop them. The Sun's gravity pulls on the planets, just as Earth's gravity pulls down anything that is not held up by some other force and keeps you and me on the ground.
Sorry for the late response but for this question, the answer is 3 moles of water.
Answer:
A
Explanation:
Electrolysis has to do with the decomposition of a solution by the passage of direct current through it. Current enters and leaves the electrolyte via electrodes.
The positive electrode is called the anode while the negative electrode is called the cathode. Positive ions move towards the cathode while negative ions move towards the anode.
Cu^2+ moves towards the cathode and accepts two electrons to be deposited on the cathode as metallic copper. Also, Cl^- ions move towards the anode and gives up electrons to become oxidized to chlorine gas.
Hence in the electrolysis of CuCl2, copper is obtained at the cathode while chlorine gas is obtained at the anode. Hence 1 and 3 are correct statements.
Answer:
<h3>The answer is 563.75 g</h3>
Explanation:
The mass of a substance when given the density and volume can be found by using the formula
<h3>mass = Density × volume</h3>
From the question
volume = 125 mL = 125 cm³
density = 4.51 g/cm³
We have
mass = 125 × 4.51
We have the final answer as
<h3>563.75 g</h3>
Hope this helps you
the balanced chemical equation for decomposition of HgO is as follows
2HgO --> 2Hg + O₂
stoichiometry of HgO to O₂ is 2:1
number of HgO moles heated are - 3.00 g / 216.59 g/mol = 0.0139 mol
according to stoichiometry of reaction -
number of O₂ moles formed = 0.0139 mol/ 2 = 0.00695 mol
mass of O₂ to be formed - 0.00695 mol x 32.00 g/mol = 0.2224 g
but the actual yield = 0.195 g
percent yield = actual yield / theoretical yield x 100 %
percent yield = 0.195 g / 0.2224 g x 100 % = 87.7 %
answer is 87.7 %