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mash [69]
4 years ago
6

Kendra conducts an experiment. She mixes two chemicals, resulting in a chemical reaction. Based on Kendra's

Chemistry
1 answer:
kondaur [170]4 years ago
3 0

Answer: It changed in identity and properties.

Explanation:

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If kc = 0.143 at 25°c for this reaction, predict the direction in which the system will shift if the initial concentrations of c
GenaCL600 [577]
The equation is as follows:
Cyclohexane (C6H12) ⇔ Methyl cyclopentane (C6H12)
The equilibrium constant Kc = 0.143 >>> (1)
Qc is the reaction quotient 
where; If Q = K >>>> No shift left or right >>> (2)
Q > K >>>> Reaction shifts left >>> (3)
Q < K >>>> Reaction shifts right >>> (4) 
And in our equation; Q = 0.3 / 0.4 = 0.75 >>> (5) 
From (1), (3) and (5), Q > Kc 
∴ the reaction shifts left

3 0
3 years ago
What is the volume, in liters, of 2.00 moles of hydrogen at STP?
Ber [7]
The volume of one mole of any gas at STP is 22.4 L. So, at STP, the volume of 2.00 moles of hydrogen gas would be (22.4 L/mol)(2 mol H2) = 44.8 L.
8 0
3 years ago
What is the mass of 4.2 mol of the element iron (Fe)?Answer in units of g.
lbvjy [14]

Answer:

2.35 *10^2 g

Explanation:

4.2 mol Fe *55.845 g/1 mol = 234.549 > 2.35 *10^2 g

8 0
3 years ago
A scientist is studying a chemical reaction. She predicts that after the reaction the product will have less chemical potential
Nady [450]
Hello!

A reaction where the products have less chemical potential energy than the reactants had originally is called an exothermic reaction. Although the scientist didn't observe light or sound, an observation that would support her prediction is the rise in temperature after the reaction has completed. Exothermic reactions release energy in the form of heat, and the temperature would rise in an exothermic reaction.

Have a nice day!
3 0
4 years ago
Why would an unstable radioactive isotope (nuclide) emit a beta particle (high energy electron)?
sasho [114]

Answer:

A)It has too many neutrons

Explanation:

Electrons are emitted from the nucleus when a neutron is converted to a proton, an electron and a neutrino. This process is popularly known as beta emission. It reduces the neutron-proton ratio of a nuclide. The neutrino is a particle of zero mass and zero charge that carries off the excess energy and balances spins.

The loss of an electron from the nucleus occurs when there are too many neutrons in the nucleus. The process of beta emission usually reduces the number of neutrons in an atom thereby decreasing the neutron-proton ratio.

4 0
3 years ago
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