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Answer:
d) Non-polar solvents
Related Questions
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What is the solubility in pure water of ba(io3)2 in moles per liter at 25 ˚c? [ksp (25 ˚c) = 6.0 10–10]?
HELP! How many grams of water are made from the reaction of 4.0 grams of hydrogen gas?
A chemistry student must write down in her lab notebook the concentration of a solution of sodium hydroxide. The concentration of a solution equals the mass of what's dissolved divided by the total volume of the solution. Here's how the student prepared the solution: The label on the graduated cylinder says: empty weight: 4.5 g She put some solid sodium hydroxide into the graduated cylinder and weighed it. With the sodium hydroxide added, the cylinder weighed 48.772 g. She added water to the graduated cylinder and dissolved the sodium hydroxide completely. Then she read the total volume of the solution from the markings on the graduated cylinder. The total volume of the solution was 152.3 mL. What concentration should the student write down in her lab notebook? Be sure your answer has the correct number of significant digits.
B) theoretical yield
C) percent yield
Answers
Answer:
A) actual yield
Explanation:
Theoretical yield is the amount of product expected based on the stoichiomety.
Percent yield is the actual yield over the theoretical yield.
Energy that is stored or released during a chemical reaction
b
Energy that is destroyed during a physical change
c
Energy that is released during a phase change
d
Energy that is created when a substance is being burned
Answers
Final answer:
Chemical energy is the energy that is stored or released during a chemical reaction. It exists within the chemical bonds of molecules and can be converted into other forms of energy.
Explanation:
Chemical energy refers to the energy that is stored or released during a chemical reaction. It is a form of potential energy that exists within the chemical bonds of molecules. When a chemical reaction takes place, these bonds are broken or formed, resulting in the release or absorption of energy.
For example, when a fuel such as gasoline is burned, the chemical energy stored in the hydrocarbon molecules is converted into heat and light energy. Similarly, during photosynthesis, plants convert sunlight into chemical energy in the form of glucose.
Learn more about chemical energy here:
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Explanation:
Chemical energy
Chemical energy is energy stored in the bonds of chemical compounds, like atoms and molecules. This energy is released when a chemical reaction takes place.
Usually, once chemical energy has been released from a substance, that substance is transformed into a completely new substance.
Answers
Answer:
113 km³
Explanation:
Step 1: Given data
Radius of the meteor (r): 3 km
Step 2: Calculate the volume (V) of the meteor
The meteor is spherical. Given the radius (r), we can calculate the volume of a sphere using the following expression.
V = 4/3 × π × r³
V = 4/3 × π × (3 km)³
V = 4/3 × π × 27 km³
V = 113 km³
The volume of the meteor is 113 km³.
Answers
Answer: The value of equilibrium constant for the net reaction is 11.37
Explanation:
The given chemical equations follows:
Equation 1:
Equation 2:
The net equation follows:
As, the net reaction is the result of the addition of first equation and the reverse of second equation. So, the equilibrium constant for the net reaction will be the multiplication of first equilibrium constant and the inverse of second equilibrium constant.
The value of equilibrium constant for net reaction is:
We are given:
Putting values in above equation, we get:
Hence, the value of equilibrium constant for the net reaction is 11.37
Answers
Answer:Homogeneous catalysts:NO(g), KI(aq.)
Heterogeneous catalyst:H₂(g) bonded to a metal surface,Pd(s) Coating
Explanation:
Homogeneous catalysis is a catalysis reaction in which the reactants as well the catalyst catalyzing the reaction are in the same phase that is, the catalyst and reactants have same phase.
In the examples NO(g) which acts as a catalyst for the oxidation of SO₂(g) to SO₃(g) is in the same gaseous phase as the reactant SO₂(g). So this is an example of homogeneous catalysis.
In the example KI(aq.) which acts as a catalyst for the decomposition of H₂O₂(aq.) is in the same aqueous phase as reactant H₂O₂(aq.). So this is an example of homogeneous catalysis.
Hence NO(g) and KI(aq.) are homogeneous catalysts.
Heterogeneous catalysis is a catalysis reaction in which the reactants and catalyst are in different phase . That is the catalyst and reactant do not have same phase.
In the examples H₂(g) bonded to a metal surface is an example of heterogeneous catalysis as the phase of H₂(g) and metal surface(s) are different hence this is an example of heterogeneous catalysis.
The Pd(s) acting as a catalyst for the conversion of noxious gas to less harmful gas is also an example of heterogeneous catalyst as the phase of Pd(s) and gases are different. Pd(s) is solid and the gases are gaseous in nature.
largest atomic radii.
Answers
Answer:
left to right across a period when it decreases and when it increases top to bottom in a group,
hope i helped