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Verizon [17]
3 years ago
9

Benzene, C6H8, has an enthalpy of fusion = 10.19 kJ/mol. Calculate the amount of energy which is needed to change 88.0 g of soli

d benzene at 5.53°C into liquid benzene, also at 5.53°C?
Chemistry
1 answer:
Mandarinka [93]3 years ago
5 0

Answer: About 10,200 Joules of heat is required to transform 80.0 g of solid benzene at 5.53°C into liquid benzene, also at 5.53°C.
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Physical and chemical properties of a piece of cooked chicken and a glass of kool-aid
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6 0
3 years ago
28. Which statement is INCORRECT regarding radiation?
mash [69]

Answer:

Radiation is energy. It can come from unstable atoms that undergo radioactive decay, or it can be produced by machines. Radiation travels from its source in the form of energy waves or energized particles. There are different forms of radiation and they have different properties and effects.

Related information in Spanish (Información relacionada en español)

On this page:

Ionizing and non-ionizing radiation

Electromagnetic spectrum

Types of ionizing radiation

Periodic Table

Non-Ionizing and Ionizing Radiation

There are two kinds of radiation: non-ionizing radiation and ionizing radiation.

Non-ionizing radiation has enough energy to move atoms in a molecule around or cause them to vibrate, but not enough to remove electrons from atoms. Examples of this kind of radiation are radio waves, visible light and microwaves.

Ionizing radiation has so much energy it can knock electrons out of atoms, a process known as ionization. Ionizing radiation can affect the atoms in living things, so it poses a health risk by damaging tissue and DNA in genes. Ionizing radiation comes from x-ray machines, cosmic particles from outer space and radioactive elements. Radioactive elements emit ionizing radiation as their atoms undergo radioactive decay.

Radioactive decay is the emission of energy in the form of ionizing radiationHelpionizing radiationRadiation with so much energy it can knock electrons out of atoms. Ionizing radiation can affect the atoms in living things, so it poses a health risk by damaging tissue and DNA in genes.. The ionizing radiation that is emitted can include alpha particles, beta particles and/or gamma raysHelpgamma raysA form of ionizing radiation that is made up of weightless packets of energy called photons. Gamma rays can pass completely through the human body; as they pass through, they can cause damage to tissue and DNA.. Radioactive decay occurs in unstable atoms called radionuclides.

Explanation:

8 0
3 years ago
Describe two other “medicinal” uses for metals.
dedylja [7]

Answer:

Please see "Explanation" for a description of how and why these two metals work in the medical field.

1. Platinum (Pt) is used in chemotherapy.

2. Nickel (Ni) used in medical tools and equipment.

Explanation:

Two chemotherapy agents contain the heavy metal Platinum. Those agents cause crosslinking in DNA, making it impossible for the dividing cancer cell to duplicate it's DNA, eventually leading to the death of that cancer cell. Platinum allows the DNA's bases to magnetically crosslink, and without platinum, there wouldn't be enough magnetic energy to cause this.

Nickel-containing stainless steel is also widely used in manufacturing medical devices, pharmaceuticals and vaccines, where the highest standards of hygiene and sterility are essential.

3 0
3 years ago
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777dan777 [17]
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