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When is heat of a reaction equal to the enthalpy change of the same reaction?
I'm pretty sure its when the pressure remains constant. When the pressure is constant: q=delta U + P delta V The equation for delta H is: delta H = delta U +P delta V Therefore, when pressure is constant: delta H = q I think...
What is the measurement used to describe how much energy is produced or used during a chemical change?
The free energy (delta G) is the measure of the amount of energy produced or consumed in a reaction. Enthalpy (delta H) is a measure of the amount of heat produced or consumed in a reaction. These two quantities can sometimes be the same. When they are not, the other missing component where heat can be consumed or produced is work.
Which of the following is a statement of Hess's law?
All the reactions in a path are added together.
Is a chemical symbol and an atomic symbol the same thing?
An atomic symbol is generally thought of as an element's symbol on the periodic table. For example, the atomic symbol for hydrogen is "H" and the atomic symbol for iron is "Fe." A chemical symbol most likely refers to different things present in the formulas and equations of chemistry. For example, in a chemical equation, the symbol for "yields" is the arrow: ---> Or the symbol for change is the greek letter delta, which looks like a little triange.
How can you predict the intermolecular forces that would be given a particular molecule?
That will depend on the electronegativity of the atoms involved and the size of the atoms that constitute the compound. There are 3 types of intermolecular forces. Firstly, we have the permanent dipole-permanent dipole interaction. The dipole-dipole interaction is a result of permanent dipoles that exist within the molecule. This is caused by the difference in electronegativity between the 2 atoms. When chlorine meets hydrogen, the highly electronegative chlorine will pull the electrons that is in the covalent bond towards itself, thus forming a delta+ charge at hydrogen and delta- over at chlorine. So, when one highly electronegative atom bonds with a way less electronegative atom, this interaction will occur. Secondly, we have the induced dipole-induced dipole interaction. When 2 atoms meet, electrons repel each other due to the close proximity. Thus, it forms a delta- charge at 1 end of the atom while leaving the other end with a delta+ charge. Plus, electrons move in orbitals, and there are times when they will congregate at one side of the atom. This movement of electrons causes delta- charge to occur at different parts of the atom. Larger atoms are more likely to go through this type of interaction because they have more electrons and hence a higher chance of having congregation. Thirdly, hydrogen bonding occurs when hydrogen (low in electronegativity) bonds with a highly electronegative atom, such as nitrogen, oxygen and fluorine. This causes the same effect as the permanent dipole-permanent dipole interaction, but is characterized by the interaction between hydrogen and a highly electronegative atom. Thus, if the molecule is constituted by these few atoms, such a intermolecular force is likely to act on it.
Does the word delta mean the same thing as difference when subtracting two numbers?
"Delta" is often used to mean "the difference" between two numbers, and that is the same as subtracting. When you subtract, the answer is called the "difference."
How do you say delta in French?
The Greek letter "Delta" is spelled the same in French.
What is the Dimension formula of impulse?
impulse=f*delta T here f= delta P(momentum)\delta T * delta T delta T cancel with delta T so, impulse will have same dimension as momentum i.e. ML/t
Why do they call it a river delta?
Because the "delta" is triangular in shape, the same shape as the ancient Greek letter "D" which is pronounced "delta".
Does delta and levee mean the same thing?
No; a delta is where a river meets the ocean, but a levee is a man made structure that is built along the edge of a river to keep the river from flooding.
If you double the amount of enzyme what happens to delta G?
enzymes dont affect the delta G, they only lower the activation energy. Therefore, the delta G stays the same
When is heat of a reaction equal to the enthalpy change of the same reaction?
I'm pretty sure its when the pressure remains constant. When the pressure is constant: q=delta U + P delta V The equation for delta H is: delta H = delta U +P delta V Therefore, when pressure is constant: delta H = q I think...
Compare the acceleration of a motorcycle that accelerates from 80 kmh to 90 kmh with the acceleration of a bicycle that accelerates from rest to 10 kmh in the same time?
Acceleration is the change in velocity divided by the time it takes to make that change;a= delta v/delta tAs you can see, the change in velocity for both vehicles is the same (10km/h), and the question states that they do it in the same amount of time. So the acceleration is the same;delta v1/delta t1 = delta v2/delta t2 = a.The fact that the motorcycle is already at a much higher speed is irrelevant.
What is a river delta a result of what?
a river delta is the end of the river because the beginning of the river is called the mouth. and the nile delta is north unlike the other rivers that flow south. rivers are the same
Is ipg the same as delta force?
No but they use the same centres and equipment
Airline what are the advantages of alliances to airline employees?
If an employee works for Delta (skyteam) and they wanted to fly to a place that delta doesn't, they could use and airline such as KLM (skyteam) with the same privileges Delta would have given them.
What is the reason if you are running an electric motor with a star delta starter but whenever it is switched to delta at the same instant its circuit breaker trips?
Check your Delta connections first if the phases is corresponding, and check your Circuit Breaker if it sufficiently rated.
