When the initial concentration of crystal Violet is double, the rate of the reaction will rise up about four times the initial rate.
<h3>What is the rate of chemical reaction?</h3>
The rate of a chemical reaction refer to the rate of change in concentration of the reaction over the change in time. Introduction.
When you double the concentration the rate doubles. The rate is proportional to the square of the concentration of a reactant. When the rate is doubled the concentration rate goes up four times. The rate is not affected by the concentration of a reactant.
Learn more about rate of chemical reaction here.
brainly.com/question/24795637
Answer:
a)
is the mass of 1 mole of bricks.
b)
moles of bricks have a mass equal to the mass of the Earth.
Explanation:
a) Mass of brick = 4.0 kg
1 mole =
particles/ atoms/molecules
Mass of
bricks :
![=6.022\times 10^{23}\times 4.0 kg=2.4088\times 10^{24} kg\approx 2.4\times 10^{24} kg](https://tex.z-dn.net/?f=%3D6.022%5Ctimes%2010%5E%7B23%7D%5Ctimes%204.0%20kg%3D2.4088%5Ctimes%2010%5E%7B24%7D%20kg%5Capprox%202.4%5Ctimes%2010%5E%7B24%7D%20kg)
is the mass of 1 mole of bricks.
b)
Mass of the Earth = M = ![6.0\times 10^{27} kg](https://tex.z-dn.net/?f=6.0%5Ctimes%2010%5E%7B27%7D%20kg)
Mass of 1 mole of brick = m=![2.4\times 10^{24} kg](https://tex.z-dn.net/?f=2.4%5Ctimes%2010%5E%7B24%7D%20kg)
Let the moles of brick with equal mass of the Earth be x.
![m\times x=M](https://tex.z-dn.net/?f=m%5Ctimes%20x%3DM)
![x=\frac{M}{m}=\frac{6.0\times 10^{27}kg}{2.4\times 10^{24} kg}=2.5\times 10^3](https://tex.z-dn.net/?f=x%3D%5Cfrac%7BM%7D%7Bm%7D%3D%5Cfrac%7B6.0%5Ctimes%2010%5E%7B27%7Dkg%7D%7B2.4%5Ctimes%2010%5E%7B24%7D%20kg%7D%3D2.5%5Ctimes%2010%5E3)
moles of bricks have a mass equal to the mass of the Earth.
Answer:
- <em>2NaCl → 2Na + Cl₂, ΔH = 822 kJ </em>
Explanation:
The chemical <em>equation</em> for the <em>formation of NaCl</em> is:
- Na + (1/2) Cl₂ → NaCl , ΔH = - 411 kJ
That equation means that 1 mole of NaCl is formed by the reaction of 1 mole of Na and 1/2 mole of Cl₂, with a release of energy of 411 kJ.
The <em>decomposition</em> of <em>NaCl</em> is the inverse of the <em>formation</em> reaction; thus, you swift products and reactants and inverse the sign of the <em>change in enthalpy:</em>
- NaCl → Na + 1/2 Cl₂, ΔH = 411 kJ
Since you want the decomposition of 2 moles you multiply the equation and the ΔH by 2:
- 2NaCl → 2Na + Cl₂, ΔH = 822 kJ ← answer
I would think the answer would be C. Based off of what I've learned and heard. Sorry if it's not the correct answer though.
Toe? Do you mean which toe like feet or a different toe
Explanation: