Can someone answer pls
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Related Questions
When magnesium is ignited in air, the magnesium reacts with oxygen and nitrogen.The reaction between magnesium and nitrogen is represented by the unbalanced equation below.Mg(s) + N2(g) --> Mg3N2(s)51 Balance the equation in your answer booklet for the reaction between magnesium and nitrogen, using the smallest whole-number coefficients. [1]52 In the ground state, which noble gas has atoms with the same electron configuration as a magnesium ion? [1]53 Explain, in terms of electrons, why an atom of the metal in this reaction forms an ion that has a smaller radius than its atom. [1]
Which is an example of a chemical change?mixing of poster colors formation of clouds metal corroding in salt water sugar dissolving in water separating salt from seawater
How many molecules are found in 0.589 moles of N2?
Which substrate, enzyme pair from the citric acid cycle is INCORRECT? A) Isocitrate, isocitrate dehydrogenase B) Succinyl CoA, succinate dehydrogenase C) Fumarate, fumarase D) Oxaloacetate, citrate synthase E) Citrate, aconitase
B.) melting ice
C.) condensing steam
D.) dissolving ammonium nitrate in water
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Answer:
C.) condensing steam
Explanation:
Exothermic reactions are chemical reaction which energy is released to the environment in the form of heat . The overall energy of the reactant is greater than the energy of the product. The higher in energy of the reactant causes a release of heat to the environment. In exothermic reactions, enthalpy change is usually negative and is accompanied by the loss of energy in the form of heat or light.
Condensation is the change of water vapor to liquid . The conversion is an exothermic reaction as energy is release to the environment in the form of heat. The water vapor molecules has higher energy than liquid. The changes of water vapor to liquid causes a loss in energy of the water vapor. As the water vapor loss more energy, heat is been release to the surrounding.
All other reaction are endothermic in which heat is absorb from the environment except for condensation of steam.
The event that is an example of an exothermic reaction is condensing steam. The answer is letter C. An exothermic reaction is one in which there is a release of heat during the reaction. Dissolving sugar in water, melting ice and dissolving ammonium nitrate in water are all examples of an endothermic reaction.
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Answer:
The correct answer is option C.
Explanation:
The radioisotopes in the Earth's interior are not in pure form and exhibit various entrenched impurities and are interspersed. Thus, when a neutron is discharged by a decaying atom, its occurrences of hitting another atom of radioisotope in order to continue the chain reaction becomes lower in comparison to the man-made nuclear reactor. In this manner, the radioactive chain reaction in the interior of the Earth is not well-sustained.
Answer: C
Explanation:
Atoms that undergo fission aren’t concentrated enough to sustain a chain reaction.
red
black
white
platelets
round
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Answer:
A.
Explanation:
The amount of mass always stays the same, matter cannot be created nor destroyed, it can only change forms. Thus, the answer is A.
In a chemical reaction the total mass of all the substances taking part in the reaction remains the same. Also, the number of atoms in a reaction remains the same. Mass cannot be created or destroyed in a chemical reaction.
I hope this helps..
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Answer:
Explanation:
A chemical change, as the name suggests, must result from a change in the chemical makeup and new substances are produced. A very common example is metal rusting.
A physical change can be observed without a change in chemical composition. No new substances are produces. Ripping paper and an ice cube melting are physical changes.
A rubber band stretching is a physical change. No new substances are made and the chemical makeup remains the same.
Answer:
physical
Explanation:
this is a physical action to create a change. does not involve chemicals or elements