The periodic table is based on an element'sa. atomic number.
b. atomic mass.
c. molecular size.
d. molecular mass.

Answers

Answer 1
Answer: The periodic table of the elements is arranged based on the elements' atomic numbers, starting with 1 (hydrogen) in the top left corner.

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Which of the following atoms would have the smallest atomic radius?

Answers

Answer:

Lithuim is the smallest

Explanation:

i hope this helps!!

What element is this? How do you know?

Answers

Atom is the most basic unit of matter. They are the general term used to describe pieces of matter. But a different kind of atom makes up an element.  A combination of atom of different elements creates a molecule. For example, you have water; it has a chemical formula of H2O. If you separate H from O, you have two atoms. Two atoms for hydrogen and one atom for oxygen. However, they are of different elements. And when you combine them to form H2O, you create a molecule.

 

The graph above compares three states of a substance.Which of the following choices would NOT be an appropriate label for the y-axis?


A. motion of particles.

B. density of particles.

C. randomness of particles.

D. kinetic energy of particles.

Answers

Answer: is C

Explanation:

Final answer:

The most appropriate label for the y-axis in a graph comparing states of substances would be related to changes that occur in different states of matter, such as kinetic energy or motion. The label 'density of particles' would not be appropriate, as it doesn't significantly vary between states.

Explanation:

The appropriate label for the y-axis on a graph that compares three states of a substance might typically be something directly related to those states, such as kinetic energy of particles, motion of particles, or randomness of particles. These labels reflect changes that occur in different states of matter. When substances change state, there are changes in the arrangement and motion of the particles.

By contrast, density of particles would not be an appropriate label. Density, in this sense, is not a property that varies significantly between different states of a substance. The density of a substance in its solid, liquid, or gaseous state does not refer to the density of the individual particles themselves, but to the density of the substance as a whole (mass/volume).

Learn more about Graph Labeling here:

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Einstein’s Theory of Relativity was built on the research and ideas of other scientists. The Theory of Relativity proposes that the speed of light is a constant.Which of the following statements explains why this is considered to be a scientific theory?

Scientists believe it is the best explanation because it is built on data and observations.

The majority of the scientific community voted on this theory over other possible explanations.

It is the best explanation because it supports the beliefs and opinions of most scientists.

It is a scientific law that has been supported by experimental data.

Answers

Einstein’s Theory of Relativity was built on the research and ideas of other scientists. The Theory of Relativity proposes that the speed of light is aconstant. The statement that explains why this is considered to be a scientific theory is that the majority of the scientific community voted on this theory over other possible explanations.

Answer:

The correct answer will be option-It is the best explanation because it supports the beliefs and opinions of most scientists.

Explanation:

Albert Einstein is known for his theory of relativity which states that energy is a converted form of mass to the square of the speed of light which is constant.

Albert Einstein was a theoretical physicist who used the facts and data from the papers of the previous physicist. Although he used the facts his theory became one of the important theory in the physics world as it explained the path of the light and the form in which it travels.

This theory is well accepted today as it was supported by the experiments and observation of the other works of different scientist. This led to the acceptance of the theory worldwide.

Thus, the selected option is the correct answer.

Which stage of grieving is actually a refusal to believe the event is occurring?A. denial
B. anger
C. bargaining
D. depression

Answers

That stage is the denial stage.

A graduated cylinder has 20 ml (cm3) of water placed in it. An irregularly shaped rock is then dropped in the graduated cylinder and the volume of the rock and water in the cylinder now reads 30 ml (cm3). The mass of the rock dropped into the graduated cylinder is 23 grams. a.) Find the volume of the rock dropped into the graduated cylinder.
b.) Find the density of the rock dropped into the graduated cylinder.

Answers

Answer:

\boxed {\boxed {\sf v=10 \ mL \ and \ d=2.3 \ g/mL}}

Explanation:

Answer:

Explanation:

A. Volume  

The volume was found using water displacement. Subtract the initial volume from the final volume.  

 final \ volume - initial \ volume

The graduated cylinder had 20 milliliters of water (initial volume).

After the rock was added, the graduated cylinder read 30 milliliters (final volume).  

Substitute the values in and subtract.

 30 \ mL- 20 \ mL

 10 \ mL

The volume of the rock is 10 milliliters.  

B. Density  

Density can be found by dividing the mass by the volume.

d=(m)/(v)

The mass of the rock is 23 grams. We just found the volume of 10 milliliters.

m= 23 \ g\nd= 10 \ mL

Substitute the values in and divide.

d=(23 \ g)/(10 \ mL)

d= 2.3 \ g/mL

The density of the rock is 2.3 grams per milliliter.

Answer:

Volume = 10 cm3

Density = 2.3g/cm3

Explanation:

volume:

30ml - 20ml = 10ml = 10cm3

density:

density = mass/volume

23/10

2.3g/cm3