Does salt affect how long an ice cube melts?I am just talking about normal salt, not special salt (if that exists).
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Answer:
Ice cubes with salt melt faster. When you add salt, it dissolves in the water of the ice cube. The freezing temperature of salt water is 32 degrees Fahrenheit lower than that of fresh water.
Related Questions
When you mix sulfur and iron, what do you get?
You have 10 fish,5 drowned,3 came back to many fish do you have now?
The enthalpy of a system is the same as its:A. specific heat.B. heat of reaction.C. heat of combustion.D. heat content.
The melting points of canola oil, corn oil, sunflower oil, and peanut oil are 10° C, -11° C, -17° C, and -2° C, If you cool a mixture of these oils to 5°C, which one can you separate easily?a. corn oil b. canola oilc. peanut oild. sunflower oil
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* Only two electrons can be assigned to an s orbital.
* three orbitals in a sub-layer p can accommodate two electrons, this sublayer can accommodate a maximum of six electrons.
* The five d orbitals of a sub-layer can accommodate a total of ten electrons.
hope this helps!
(3) more mass and greater penetrating power
(4) more mass and less penetrating power
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Answer is (1) - less mass and greater penetrating power.
Alpha particle is a ₂⁴He nucleus while beta particles are electrons. Hence, the mass of alpha particle is greater than the mass of beta particle. But, the penetrating power is higher in beta particle than alpha particle. Alpha particles can be blocked by few papers but beta particles can go through those papers.
Answer: A beta particle has less mass and greater penetrating power.
Explanation:
Penetrating power is the power with which a particle travels or pass through a substance.
Since, it is known that mass of an alpha particle () is more than the mass of a beta particle (
). So, a particle that holds less mass can move easily from one place to another.
Therefore, beta particle can move faster as it has only one electron as compared to 2 protons of an alpha particle. Hence, interaction of beta particles is less with the atoms or materials through which it passes.
Therefore, we can conclude that compared to the mass and the penetrating power of an alpha particle, a beta particle has less mass and greater penetrating power.
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Answer: Conduction, radiation and convection all play a role in moving heat between Earth's surface and the atmosphere. Since air is a poor conductor, most energy transfer by conduction occurs right near Earth's surface. ... During the day, sunlight heats the ground, which in turn heats the air directly above it via conduction.
HOPE THIS HELPS
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Sawing a board in half is a physical change not a chemical change the board doesnt change wood or whatever material it is is still would still be wood
If it were burned it would be a chemical change but its properties stay the same atomically so thats why its not a chemical change.
(B) increases the fraction of reactant molecules with a given kinetic energy.
(C) provides an alternate path with a different activation energy.
(D) lowers the enthalpy change in the overall reaction
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1. if you add negative catalyst then the rate of chemical reaction decreases
2. if you add positive catalyst then the rate of chemical reaction increases.
b) compound
c) isotope
d) proton
e) molecule
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Answer:
A
Explanation:
An element is a substance that cannot be broken down into simpler substances using ordinary chemical procedures. To disintegrate an element, procedures like nuclear reactions needed to be used.
In fact, it was thought of that the elements are indivisible during the days of Dalton, but advances in science and technology has shown that these elements could be broken down albeit not easily
Final answer:
An element is a substance that cannot be broken down into other substances by ordinary chemical methods. It is the basic unit of all matter. Examples of elements include gold, silver, and carbon.
Explanation:
A substance that cannot be broken down into other substances by ordinary chemical methods is called an element. This is because elements are the fundamental materials of which all matter is composed. For instance, gold, silver, and carbon are examples of elements. Unlike compounds, isotopes or molecules, an element is made up of the same type of atom and cannot be decomposed into simpler substances by any ordinary chemical processes.
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