Which two substances are among the four major types of organic
compounds made by living things?
A. Potassium
B. Water
C. Carbohydrates
D. Proteins

Answer:

The diameter of a mercury atom is 151 pm and the diameter of the planet Mercury is 4,879.4 km.

The final pressure in the container if the temperature remains constant is 68.3 kPa.

Given the following data;

To find the final pressure in the container if the temperature remains constant, we would use Boyle's Law:

Mathematically, Boyle's law is given by the formula;

[tex]P_1V_1 = P_2V_2[/tex]

Where;

Substituting the values into the formula, we have;

[tex]205[/tex] × [tex]4 =[/tex] [tex]12P_2[/tex]

[tex]820 = 12P_2\\\\P_2 = \frac{820}{12}[/tex]

Final pressure, P2 = 68.3 kPa

Therefore, the final pressure in the container if the temperature remains constant is 68.3 kPa.

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the answer is D hope it helps :)

Answer:

3

Explanation:

The velocity is basically the speed + the direction of an object put into one quantity, velocity.

hope this helps, if not see me in the comments...

HOPE THIS HELPS BRAINLIEST PLZZ

Answer:

195.199 grams

Answer:

concentration is the abundance of a constituent divided by the total volume of a mixture.

Explanation:

hope this helps <33

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and also can i have brainliest plz? :D

A shortcoming of Rutherford’s model of the atom is it did not account for the fact that atoms have equal numbers of protons and electrons. Therefore, option C is correct.

Ernest Rutherford, a scientist who was born in New Zealand, developed the Rutherford model to explain an atom. Rutherford oversaw the Geiger-Marsden experiment, which, after Rutherford's analysis in 1911, indicated that J. J. Thomson's plum pudding model of the atom was flawed, in 1909.

The first person to recognize an atom's nucleus was Rutherford. He attacked gold with -particles and discovered that there was positively charged material inside the atom as a result.

It did not explain the distribution of the atom's negatively charged electrons around its positively charged nucleus.

Thus, option C is correct.

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Answer:

C. 2

Explanation:

Is a "wave function that describes properties characteristic of no more than two electrons in the vicinity of an atomic nucleus or of a system of nuclei as in a molecule."

B: It has fewer than 10 total watersheds best describes

A watershed is the area of land where all of the water that falls in it and drains off of it goes to a common outlet. All the land drains water into rivers that drain into the Chesapeake Bay, where it enters the Atlantic Ocean.

The area that drains into a single river is the watershed for that river.

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Answer:

Chemical Properties

Explanation:

Answer: chemical properties

Explanation:  chemical bonds between atoms are formed or broken.

Answer:

answers below

Explanation:

Lithosphere/ Crust- made of large plates that move, average thickness is 30 km, average temperature is 25 degrees Celsius

Inner Core- made of solid iron, 1,200 km thick, 7,000 degrees Celsius

Outer Core- made of a dense liquid of iron and sulfur, 2,250 km thick, 4,000 degrees Celsius

Lower Mantle- made of solid rock, 2,200 km thick, 3,000 degrees Celsius

Asthenosphere/ Upper Mantle- made up of solid rock that flows due to plasticity, 720 km thick, 850 degrees Celsius

Answer:

C.) A meter

Explanation:

Taking into accoun the STP conditions and the ideal gas law, the correct answer is option e. 63 grams of O₂ are present in 44.1 L of O2 at STP.

First of all, the STP conditions refer to the standard temperature and pressure, where the values ​​used are: pressure at 1 atmosphere and temperature at 0°C. These values ​​are reference values ​​for gases.

On the other side, the pressure, P, the temperature, T, and the volume, V, of an ideal gas, are related by a simple formula called the ideal gas law:  

P×V = n×R×T

where:

Then, in this case:

Replacing in the expression for the ideal gas law:

1 atm× 44.1 L= n× 0.082 [tex]\frac{atmL}{molK}[/tex]× 273 K

Solving:

[tex]n=\frac{1 atm x44.1 L}{0.082\frac{atmL}{molK}x273K}[/tex]

n=1.97 moles

Being the molar mass of O₂, that is, the mass of one mole of the compound, 32 g/mole, the amount of mass that 1.97 moles contains can be calculated as:

[tex]1.97 molesx\frac{32 g}{1 mole}[/tex]= 63.04 g ≈ 63 g

Finally, the correct answer is option e. 63 grams of O₂ are present in 44.1 L of O2 at STP.

Learn more about the ideal gas law:

Answer:

p=m/v

p equals density M equals mass and v = volume

Answer:

In the complete ionic equation, soluble ionic compounds and strong acids are rewritten as dissociated ions. write the ionic and net ionic equation for this equation: Ammonium Chloride + Sodium Hydroxide NH_4Cl + NaOH = NH_3 + H_2O + NaCl There are so many chemical reactions that occur around us that we classify them into different types.

Explanation:

Answer:

5

Explanation:

It requires 20 chracters to fill this answer

Answer:

It’s A

The indivisibility of an atom was proved wrong: an atom can be further subdivided into protons, neutrons and electrons. However an atom is the smallest particle that takes part in chemical reactions. According to Dalton, the atoms of same element are similar in all respects.

Answer:

i don't know if Im converting it to newtons or picograms

Explanation:

in newtons the coefficient is 8.5 and the exponent is 2. sorry if i'm wrong

Answer:

Respiratory because you use a lot of cellular respiration to bring oxygen into the body.

Nervous because signals are sent from our brain to our muscles.

Circulatory to help with breathing and movement of blood and oxygen

Explanation:

Hope this helps!

Answer:

20.1974

Explanation:

The Atomic mass will be the same for every isotope as the number of Neutrons changes, not the number of protons.

Neon has two major isotopes. Neon-20 and Neon-22. Out of every 250 neon atoms, 225 will be Neon-2(19.992 g/mol), and 25 will be Neon-22 (21.991 g/mol), then the average atomic mass of Neon20.1974

Atomic mass of an element can be defined as the total number of neutrons and protons present in the nucleus of an atom and the  atomic number is the number of protons present in  nucleus.

the average weight of an element is called as atomic mass while atomic number is total number of protons present in the central nucleus of the atom. Atomic mass is presented a symbolic representation of A where as atomic number is represented by the letter Z.

Atomic mass can not classified  which type of element where as Atomic number classify and identify the type of element, there are different types of isotopes of an element observed on the basis of their atomic mass where as isotopes only share the same atomic number.

Neon has two isotopes such as , N e 20, N e 21 and N e 22.The average atomic mass can be calculated as:

N e  Average atomic mass = [ 19.9924 (90.92 %)] + [ 20.9940 (0.257 %)] + [ 21.9914 (8.82 %)] a m u

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Answer:

30 gram

Explanation:

Hope this helps

Brainliest pls ❤️

Answer:

Windstorm Hope it helped brainiest plz and thank you have a great day!!!

Explanation:

Which of the following natural processes will NOT directly result in the formation of sedimentary rock?

B. Windstorm

Water has three states of matter namely gas, solid or ice form and liquid. Molecules in solid state are not able to move since they are tightly packed.

Molecules can move in liquid state and they moves easily in gaseous state.

Every substance have three states, that are gas, liquid and solid. In solid state, molecules are tightly packed and are unable to move apart. In liquid state, molecules have some space to move and motion of liquid is easy.

The movement of molecules in a substance depends on the space allotted for them or called the volume. More volume between molecules, easy to move apart.

Gaseous state is composed of molecules located far apart from each other and they diffuse easily. Therefore, motion in three states of water is different and moves faster in gaseous state.

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Answer: Hydrogen does not contain neutron, because its nucleus is smallest in size which cannot accommodate any heavier neutron. It also makes hydrogen atom unstable in nature.

Explanation:

Answer:

chemical properties

Explanation:

so EZ

Answer:

what

Explanation:

i d k what this question is

Answer:

0.51 J/g°C

Explanation:

Answer:

its not pulling up ? ;(

Explanation:

Answer:

I'll do it if you give brainlyest and some points