Answer:
The final temperature of the aluminum is 306°C
Explanation:
Have the follow:
The amount of heat is equal to:
Heat absorbed by the water = heat lost by aluminum
-q = qal
Answer:
39.1 g
Explanation:
In your case, 6.02⋅1023 atoms of potassium will be equivalent to one mole of potassium. Therefore, you can say that one mole of potassium has a mass of 39.1 g .
The concentration of hydronium ion, [H₃O⁺] = 1.3 × 10⁻⁶ M
<u>Explanation:</u>
HClO is a weak acid and it can be ionized and given by the equation as,
HClO + H₂O ⇄ H₃O⁺ + ClO⁻
Ka is given by the expression that the product of the concentration of products divided by the product of the concentration of the reactants.
= 2.9 ×10⁻⁸
Consider [H₃O⁺] = [ClO⁻] = x
[HClO] = 0.365 - x
Since Ka is very small, consider x <<<0.365, also it should be ignored.
Ka = 2.9 ×10⁻⁸ =
x² = 2.9 × 10⁻⁸ × 0.365
x = 1.3 × 10⁻⁶ M
Thus we can conclude 3rd Option as correct answer
Answer:
B) Earth and all the other planets orbit the Sun.
Explanation:
A) This one is basically what people used to think, that the sun and other planets orbited around Earth. We know now that this is not true.
C) We know that no planets orbit around Earth.
D) The Sun does not orbit around Earth, the Earth orbits around the Sun.