Which part of the nervous system is a gray, wrinkly organ made up of millions of neurons? A. nerves B. brain C. spinal cord D. eye wasn't exactly sure what category to put in

Answers

Answer 1

Answer:

The part of the nervoussystem is a gray, wrinkled organ consist of millions of neurons is the brain. Therefore, option B is correct.

What is nervous system ?

The nervous system is made up of the brain, spinal cord, and a sophisticated network of nerves. By this system, the body and the brain are transmitted. The brain performs every physical function. The spinal cord moves the brain through the back.

The brain and spinal volume unit are the organs of the central nauseous system. Since they are so vitally important, the brain and spinal cord, which are located in the dorsal body cavity, are protected by a bone shell.

Your entire body is controlled by your brain. Even when you sleep, it controls practically all of your behaviors and runs the show. For something the size of a wrinkled sponge of grey, it was really bad.

Thus, option B is correct.

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Answer 2

Answer: The answer to your question is b the brain

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The mass of an object is constant, but its weight may change depending on:

Answers

Answer:

gravity

Explanation:

your mass is the same on the moon as is on earth or underwater but your weight changes because of gravity

When the pressure that a gasexerts on a sealed container
changes from 53.0 atm to 35.2
atm, the temperature changes
from
°C to 12.0°C.

Please help I will give brainliest

Answers

Answer:

To determine the relationship between pressure and temperature in this scenario, we can use the ideal gas law.

The ideal gas law states that PV = nRT, where P represents pressure, V represents volume, n represents the number of moles of gas, R is the ideal gas constant, and T represents temperature in Kelvin.

Since we only have the initial and final pressures and temperatures, we can compare them using the ideal gas law equation by setting up the following ratio:

(P₁T₁) / (P₂T₂) = (V₁n₁R) / (V₂n₂R)

Since the volume, number of moles, and gas constant remain constant, we can simplify the equation:

(P₁T₁) / (P₂T₂) = 1

Now, we can substitute the given values into the equation:

(53.0 atm * T₁) / (35.2 atm * 12.0°C) = 1

To solve for T₁, we need to convert 12.0°C to Kelvin by adding 273.15:

(53.0 atm * T₁) / (35.2 atm * (12.0 + 273.15) K) = 1

Simplifying the equation further:

(53.0 atm * T₁) / (35.2 atm * 285.15 K) = 1

Now, we can solve for T₁:

(53.0 atm * T₁) = (35.2 atm) * (285.15 K)

Dividing both sides of the equation by 53.0 atm:

T₁ = (35.2 atm * 285.15 K) / 53.0 atm

Calculating the numerical value:

T₁ ≈ 189.5 K

Therefore, when the pressure changes from 53.0 atm to 35.2 atm, the temperature changes from approximately 12.0°C to 189.5 K.

Which compound has both ionic and covalent bonds?
(1) CO2 (3) NaI
(2) CH3OH (4) Na2CO3

Answers

The compound that has both ionic and covalent bonds is $\boxed{{\mathbf{4}}{\mathbf{.}}{\text{ }}{\mathbf{N}}{{\mathbf{a}}_{\mathbf{2}}}{\mathbf{C}}{{\mathbf{O}}_{\mathbf{3}}}}$ .

Further explanation:

The periodic properties are characteristics that are associated with the different elements found in the periodic table. The origin of different properties is the difference in the atomic structure of the different elements.

For a systematic study of the chemical and physical properties of different elements, they are placed in certain columns called groups and horizontal rows called periods. The rows of the table called periods and have metals on the left and non-metals on the right. The columns also called groups contains elements with similar chemical properties.

The ionic bond is a chemical bond between two atoms in which one atom donates its electron to another atom. While covalent bonds involve sharing of electrons between two atoms and reach a more stable electron configuration.

Compounds made from two elements can either have an ionic or covalent bond.

(i) If a compound is made between metal and a non-metal then the bond will be ionic.

(ii)If a compound is made between two non-metals then the bond will be covalent.

(1) In ${\mathbf{C}}{{\mathbf{O}}_{\mathbf{2}}}$ , oxygen(O) and carbon(C) are nonmetals. They form a covalent compound, and bond present in ${\mathbf{C}}{{\mathbf{O}}_{\mathbf{2}}}$ will be covalent bond.

(2) In NaI, sodium (Na) is metal and iodine (I) is a nonmetal. They will form an ionic compound, and bond present NaI will be ionic.

(3) In ${\mathbf{C}}{{\mathbf{H}}_{\mathbf{3}}}{\mathbf{OH}}$ , carbon(C) hydrogen(H) and oxygen(O) all are nonmetal atoms they will form a covalent compound, and bond present in will be covalent.

(4) In ${\mathbf{N}}{{\mathbf{a}}_{\mathbf{2}}}{\mathbf{C}}{{\mathbf{O}}_{\mathbf{3}}}$ , sodium(Na) is metal, carbon(C) and oxygen(O) are nonmetals atoms. The bond form between sodium and carbon will be ionic. Also, the bond formed between carbon and oxygen is covalent as both carbon and oxygen are nonmetals. Therefore, ${\text{N}}{{\text{a}}_{\text{2}}}{\text{C}}{{\text{O}}_{\text{3}}}$ has both covalent and ionic bond.

Hence the correct option is 4.

Learn more:

1. Calculate number of solutes: brainly.com/question/8054051.

2. How many moles of Cl are there in 8 moles of CCl4: brainly.com/question/2094744

Answer details:

Grade: High School

Subject: Chemistry

Chapter: Chemical bonding.

Keywords: Ionic bond, covalent bond, metal, nonmetal, NaI, CO2, Na2CO3, and CH3OH.

Final answer:

Na2CO3 (sodium carbonate) contains both ionic and covalent bonds.

Explanation:

The compound with both ionic and covalent bonds is Na2CO3 (sodium carbonate).

Na2CO3 contains ionic and covalent bonds because it is formed from the reaction between a metal (sodium) and a polyatomic ion (carbonate). The bonds between the sodium and oxygen atoms in the carbonate ion are ionic, while the bonds within the carbonate ion (between carbon and oxygen) are covalent.

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An atom that is electrically neutral containsa. more electrons than protons.
b. more neutrons than electrons.
c. an equal number of neutrons and protons.
d. an equal number of protons and electrons.

Answers

D. I wouldn't bother much with B and C since neutron doesn't necessarily has to be in the picture. So, why D? reasons being, an atom will not be electrically neutral if it exists as an ion. In other words, the no. of electrons have to be the same with the no. of protons.

A 4.00 mL aliquot of a 0.15 M HCl solution is diluted to a final volume of 25.00 mL. What is the molarity of this first dilution solution? Then a second dilution was made by taking 7.50 mL of the first dilution and diluting it to 50.00 mL. What is the molarity of this second dilution?

Answers

Final answer:

The molarity of HCl after the first dilution is 0.024 M and after the second dilition, it is 0.0036M.

Explanation:

The problem at hand is a solution dilution problem in the field of Chemistry, usually tackled by the use of formula M1V1=M2V2, where M1 and V1 are the original molarity and volume, and M2 and V2 are the molarity and volume after dilution. In the first dilution, applying this formula gives (0.15 M)(4.00 mL) = (M2)(25.00 mL), solving for M2 gives a value of 0.024 M. The second dilution would similarly have the equation (0.024 M)(7.5 mL) = (M3)(50.0 mL), which gives M3 approximately 0.0036 M. Hence, the molarity of the first dilution would be 0.024 M and the molarity of the second dilution would be 0.0036 M.

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I really dont know but it would be useful to use chegg it really help you find the answer in a proper manner

Which of the following statements is true? Atoms of isotopes of an element have different numbers of electrons. Atoms of isotopes of an element have different numbers of neutrons. Atoms of the same element all have the same mass. Atoms of isotopes of an element have different numbers of protons.

Answers

Answer:

atoms of isotopes of an element have different numbers of neutrons.

Explanation:

isotopes have the same number of protons, but different numbers of neutrons.

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