Please need help with this one

Answers

Answer 1

Answer:

op, here is a list of physical properties. Physical is things you can see.

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a block of aluminum has a density of 2.7 g/cm. if the block is cut in half, what will be the density of each half?

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2.7 is what i got to? Hope this helps have a good day

Final answer:

The density of each half of the aluminum block remains the same as the original block, 2.7 g/cm³. Density is an intrinsic property of a material and does not change when the amount of the material changes.

Explanation:

The density of a material remains constant regardless of the amount of that material. The density is an intrinsic property defined as mass divided by volume. When you cut a block of aluminum in half, you are halving both the mass and the volume. Since both are reduced by the same proportion, the ratio of mass to volume (i.e., the density) stays the same. Thus, the density of each half of the aluminum block remains 2.7 g/cm³.

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Nuclei of u-238 atoms are

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Nuclei of U-238 atoms are unstable and radioactive isotope of uranium . It decays naturally and emits alpha (α) particle.

What is Nuclei of uranium ?

The actinide series includes the metallic, silver-gray element uranium (U). It serves as the primary fuel for nuclear reactors and is also a component of nuclear weapons.

Since uranium has an atomic number of 92, its atomic structure consists of 92 protons and 92 electrons. The nucleus of U-238 contains 146 neutrons, but this number can range from 141 to 146. Due to its radioactivity, uranium constantly emits particles and transforms into new elements.

There is a recognized radioactive decay series for uranium. The most prevalent uranium isotopes are U-238 and U-235 (which has 143 neutrons). All three isotopes of uranium (U-238, 235, and 234) are present in nature, and variations from the typical composition are rarely greater than 0.01%.

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Nuclei of u-238 atoms are unstable and spontaneously emit alpha particles.

Which of the following are made of repeating sugar units? Choose all answers that are correct. A. proteins B. nucleic acids C. carbohydrates D. lipids