Mass of a proton =...........

Answers

Answer 1

Answer:

Explanation:

A proton has a mass of approximately 938 MeV/c2, of which the rest mass of its three valence quarks contributes only about 9.4 MeV/c2; much of the remainder can be attributed to the gluons' QCBE.


Related Questions

What can you infer is causing the cryosphere to change?

Answers

Answer:

Explanation:

The cryosphere—the portion of the Earth's surface where water is in solid form for at least one month of the year—has been shrinking in response to climate warming. ... The important outcome, however, is the change and the response the human social system (infrastructure, food, water, recreation) will have to that change.

The cryosphere the portion of the Earth's surface where water is in solid form for at least one month of the year has been shrinking in response to climate warming.

What is cryosphere ?

The cryosphere includes all of the earth's frozen water, including glaciers and sea ice.

The lithosphere is the solid part of the earth made up of rocks, minerals, and other elements except the ocean. It is the  part which present in the outer part of the earth which includes the brittle upper portion of the mantle and crust. The part of  planet where living things can be found from the upper part of the atmosphere to the lower of the oceans and pools that are thermal and made up of the parts of earth where life present in all ecosystem is known as biosphere.

The atmosphere is the thin layer of gases that covers the outer part of the planet. It gives us the many different climates, or broad way of  weather conditions around the world. The hydrosphere includes all of the water on earth from the oceans to glaciers and underground water and it can be liquid, vapour, or ice.

Therefore, the cryosphere the portion of the Earth's surface where water is in solid form for at least one month of the year has been shrinking in response to climate warming.

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A dog has a mass of 19 kg. What is the mass of the dog in grams,expressed in scientific notation

Answers

Answer: 1.9 x 10^4

Explanation:

A dog has a mass of 19 kg. The mass of the dog in grams, expressed in scientific notation, is 1.95 × 10⁴ g.

What is mass?

Mass is the quantity of matter in a physical body. The product of the compound's molar mass and the substance's moles are defined as mass.

Measuring units to determine the size, weight, or quantity of any object. Seven fundamental measurement units are utilized in daily life and across the globe.

These units of measurement are the meter, which is used to measure distance, and the second, which is used to measure. Grams and kilograms are the measuring units that are used to measure the quantity of a solid item.

The mass of the dog in grams is:

1 kilogram = 1000 grams

19.5 kg × (10³ g/1 kg) = 1.95 × 10⁴ g.

Thus, the mass of the dog in grams is 1.95 × 10⁴ g.

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radium 226 has a half life of 1600 yers. suppose we have a 300g sample. how much remains after 200 years

Answers

Answer:

[tex]A=275.1g[/tex]

Explanation:

Hello.

In this case, since the radioactive decay is computed via:

[tex]A=A_0*2^{-\frac{t}{t_{1/2}}[/tex]

For the initial amount of Ra-226 (300 g), once 200 years have passed, the remaining mass is:

[tex]A=300g*2^{-\frac{200years}{1600years}}\\\\A=275.1g[/tex]

This is, considering that the half-life is 1600 years, it means that the mass of Ra-226 is decreased.

Best regards.

All of the following changes to a metal are physical changes except_____.


bending

melting

rusting

polishing

Answers

Answer:

D)Polishing..

Answer:

Wouldn't it be rusting

Explanation:

Melting and bending are physical changes so is polishing. so rusting is the only choice, for metal to rust wouldn't it need a chemical change.

Describe the function of a cilia.

Answers

Answer:

hope it helps..

Explanation:

'Motile' (or moving) cilia are found in the lungs, respiratory tract and middle ear. ... These cilia have a rhythmic waving or beating motion. They work, for instance, to keep the airways clear of mucus and dirt, allowing us to breathe easily and without irritation.

Answer: to keep airway clear of mucus and dirt allowing us to breathe easy

Explanation:

Which is not a compound?
a. carbon dioxide gas
b. oxygen gas
c. silicone dioxide
d. water

Answers

Answer:

The answer is b oxygen gas b/c its an element

Explanation:

Calculate the density of an
object with a mass of 20 g
and a volume of 2.3 mL.

Answers

Answer:

8.7g/mL

Explanation:

I used the density formula to solve. d=m/v= 20g/2.3mL

Answer:

8.7 g/ml

Explanation:

the formula for density is D = M/V

Which of the following is a process that changes the composition of rocks from one material to another? (3 points) a Erosion b Deposition c Physical weathering d Chemical weathering

Answers

Answer:

ERosion i think

Explanation:

Answer:  

Deposition

Explanation:

I hope you have a nice day(:

How much MmHg are in 30.0 psi

Answers

Answer:

1551.45 MmHg

hope this helps :D

30 pound-force peer square inch is equal to 1551.45


In chemistry lab, a student measured the density of liquid ethanol is 0.789 g/mL. Represent its density in units of 1b /in3? (2.54 cm = 1 in., 2.205 lb = 1 kg)
A. 9.09 x 10+ 1b / in
B.4.42 x 10-1b / in?
OC.2.85 x 10-2 16 / in
D. 0.106 16 / in?
O E.5.86 x 10" 16/in3​

Answers

Answer:

Option C is correct option = 2.85×10⁻² lb/in³

Explanation:

Given data:

Density in g/mL = 0.789

Density in lb/in³ = ?

Solution:

It is given that,

2.54 cm = 1 in

2.205 lb = 1 kg   thus,

1 mL = 1 cm³

0.789 g/cm³ × 1 kg/ 1000 g × 2.205 lb/1 kg × (2.54 cm / 1in)³

2.85×10⁻² lb/in³

The density of liquid ethanol is 0.789 g/mL, which is equivalent to 0.0285 lb/in³.

A student measured the density of liquid ethanol to be 0.789 g/mL and we want to convert it to lb/in³. We will need a series of conversion factors.

What is a conversion factor?

A conversion factor is an arithmetical multiplier for converting a quantity expressed in one set of units into an equivalent expressed in another.

Step 1: Convert 0.789 g/mL to lb/mL

We will use the following conversion factors:

1 kg = 1000 g.1 kg = 2.205 lb.

0.789 g/mL × (1 kg/1000 g) × (2.205 lb/1 kg) = 1.74 × 10⁻³ lb/mL

Step 2: Convert 1.74 × 10⁻³ lb/mL to lb/in³

We will use the following conversion factors:

1 mL = 1 cm³.1 in = 2.54 cm.

1.74 × 10⁻³ lb/mL × (1 mL/1 cm³) × (2.54 cm/1 in)³ = 0.0285 lb/in³

The density of liquid ethanol is 0.789 g/mL, which is equivalent to 0.0285 lb/in³.

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How would a descriptive model of Earth's layers be categorized?
a. abstract model
b. prototype model
c. concrete model
d. conceptual model​

Answers

It’s b hope that helped

A descriptive model of Earth's layers can be categorized as prototype model. Hence, option B is correct.

What is a descriptive model?

A descriptive model describes a system or other entity and its relationship to its environment.

The Earth has different compositional and mechanical layers. Compositional layers are determined by their components, while mechanical layers are determined by their physical properties.

The outermost solid layer of a rocky planet or natural satellite. Chemically distinct from the underlying mantle.

Hence, option B is correct.

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Convert 2.6 x 106 mL to L.

Answers

Answer:

0.2756 L

Explanation:

0.2756 L

How many protons does Hydrogen contain?

Answers

Answer:

1

Explanation:

Hydrogen contains 1 proton

which statement describes how technology has increased our information on Mars?
A. The Curiosity rover found sulfur compound in rocks.
B.The Curiosity rover located methane in soil samples.
C. The Curiosity rover detected carbon in organic molecules.
D. The Curiosity rover discovered helium in underground pockets.

Answers

Answer:

Either D or C. I'm so sorry if I got you the wrong answer

Answer:

c

Explanation:

If you added an excess of sodium phosphate dodecahydrate to 4.512 g barium chloride dihydrate, how many grams of barium phosphate could you synthesize

Answers

Answer:

3.35g of Ba3(PO4)2

Explanation:

The balanced chemical equation is given as;

3 BaCl2 + 2 Na3PO4 → 6 NaCl + Ba3(PO4)2

Fro the reaction;

3 mol of BaCl2 (624g) reacts wth 2 mol of Na3PO4 (327.88g) to form 1 mol of Ba3(PO4)2 (601.93g)

Since Na3PO4 is in excess, the limiting reactant is; BaCl2. It would determine how much of Ba3(PO4)2 is formed.

624g of BaCl2 = 601.93g of Ba3(PO4)2

4.512g of BaCl2= xg of Ba3(PO4)2

x = 4.512g * 601.93g / 624g

x = 3.35g of Ba3(PO4)2

The mass of barium phosphate synthesized is 3.612 g.

The equation of the reaction is;

3 BaCl2.2H2O + 2 Na3PO4.12 H2O → 6 NaCl + Ba3(PO4)2 + 14H2O

Molar mass of barium chloride dihydrate = 244.26 g/mol

The number of moles of barium chloride dihydrate =  4.512 g/244.26 g/mol

= 0.018 moles

From the balanced reaction equation shown;

If 3 moles of barium chloride dihydrate yields 1 mole of  barium phosphate

0.018 moles of  barium chloride dihydrate yields 0.018 moles × 1 mole/3 moles

= 0.006 mole of barium phosphate

Mass of barium phosphate = 602 g/mol × 0.006 mole

= 3.612 g

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What was the average speed of the truck for this trip?

Answers

Answer:

31.67 mph

Explanation:

To calculate the average speed of the truck, we must first obtain the total distance travelled by the truck followed by the total time taken for the truck to cover the distance travelled.

The following data were obtained from the question include:

Total distance) = 30 + 45 + 50 + 65 = 190 miles

Total time = 1 + 2 +1 +2 = 6 hours

Average speed =.?

Average speed = Total distance / Total time

Average speed = 190 /6

Average speed = 31.67 mph

Therefore, the average speed of the truck is 31.67 mph

Which of the following compounds is the MOST polar?

H−Br

H−F

H−Cl

H−I

Answers

H-F because it has the largest difference in electronegativity which is 2, so it’s the most polar.

What is another name for radioactive dating?

Answers

Answer:

radioisotope dating is another name

Answer:

Radiometric dating

Explanation:

hope that helps

The reaction below shows how the potential energy changes during a
chemical reaction. What does the red arrow show?

Answers

Answer:

Option C. Change in enthalphy is negative, the reaction is exothermic.

Explanation:

In the profile diagram given in the question above, we can see clearly that the energy of the reactant (Hr) is higher than the energy of product (Hp).

Hence, the enthalpy change (ΔH) will be negative i.e

Enthalpy change (ΔH) = Energy of product (Hp) – Energy of reactant (Hr)

ΔH = Hp – Hr = negative (–) [since Hr is higher than Hp]

A reaction in which the enthalpy change (ΔH) is negative is termed exothermic reaction.


When an atom is trying to obtain stability, what part(s) of the atom change(s)?

Answers

It gains stability by gaining/losing electrons

Which of the following contribute(s) to most of the mass of an atom?
Question 6 options:

A)

Neutrons only

B)

Protons and neutrons

C)

Protons and electrons

D)

Protons only
Question 7 (5 points)
In a certain chemical reaction, the bonds of the products contain more energy than the bonds of the reactants. For the reaction to occur, which of the following best describes what occurred?
Question 7 options:

A)

Energy was released, so the reaction is endothermic.

B)

Energy was released, so the reaction is exothermic.

C)

Energy was added, so the reaction is endothermic.

D)

Energy was added, so the reaction is exothermic
Question 8 (5 points)
A solution
Question 8 options:

A)

is a single-phase homogeneous mixture.

B)

must contain water.

C)

is always a liquid.

D)

can contain more than two phases.
Question 9 (5 points)
Which of the following is true of alloys?
Question 9 options:

A)

They can only be composed of metals.

B)

They must be held together by chemical bonds.

C)

They're liquid solutions.

D)

They must contain a metal.
Question 10 (5 points)
Which of the following best describes an atomic number? An element's identity is defined by its atomic number; this means it represents the number of
Question 10 options:

A)

electrons in the element.

B)

neutrons in its nucleus.

C)

protons plus neutrons in its nucleus.

D)

protons in its nucleus.

Answers

Answer:

1.

B) protons and newtrons

2.

D)

3.

C)

4.

A)

Subscripts are used in a chemical formula to show the number of atoms of each element.
True or False.
If endothermic means that the temperature increases and exothermic means it decreases, it 64 degrees to 64 degrees (it stayed the same) endothermic or exothermic?

Answers

False exothermic creates heat endothermic create cold

Answer:

The answer is none of them.

Explanation:

I did the study guide...Also, if it has no change, it is neither.

Where is the north pole of the bar magnet, based on the magnetic field lines
shown?

Answers

Answer:On the Right End

Explanation: Trust me I just got it wrong on APEX to answer it for y’all On the right end is the correct answer

Answer:

Right end

Explanation:

Just did the quiz

i need help please help me now please

Answers

The answer is C, balanced

Imagine there is technology that allows scientists to see all of the movement of molecules inside living things. A scientist points this machine at the stem of a vascular plant and sees glucose molecules being transported to various parts of the plant. The scientist is looking at the movement of molecules through

the xylem.
the phloem.
the roots.
the cuticle.

Answers

Answer: C

Explanation: I looked it up lol

5) A pure substance which can be decomposed by a chemical change is a

A) mixture
B) compound
C) metal
D) nonmetal

Answers

it’s b compound sksjdhshkaks
The answer would be (B), a compound. By definition, a chemical compound is a substance that is made up of at least two atoms from more than one element. A chemical change involves a change in chemical identity: In decomposition, a substance with its unique chemical identity is broken down into constituent substances that have their own, unique chemical identities.

A new element was discovered. It’s average atomic mass was found to be 245.6 amu. Isotope #1 has a mass of 243.2 amu; isotope #2 has a mass of 244.9 amu; isotope #3 has a mass of 247.2 amu. Which isotope is most likely to be the most abundant?

A
Isotope 1

B
Isotope 2

C
Isotope 3

D
They all contribute the same amount

Answers

Answer:

B. Isotope 2

Explanation:

Isotopes can be defined as the atom of an element that has the same number of protons but different number of neutrons. This ultimately implies that, the isotopes of an element have the same atomic number (number of protons) but different atomic mass (number of nucleons).

Basically, the atomic mass of any chemical element found in the periodic table is equal to the weighted average of all its isotopes. Therefore, the isotope with the closest mass to the weighted average would be the most abundant.

In this scenario, a new element was discovered with an average atomic mass of 245.6 amu.

Isotope #1 has a mass of 243.2 amu.Isotope #2 has a mass of 244.9 amu.Isotope #3 has a mass of 247.2 amu.

Hence, the isotope which is most likely to be the most abundant is isotope #2 that has a mass of 244.9 amu because it is closest in mass to the relative atomic mass (weighted average) of 245.6 amu.

30 POINTS
Why would a scientist revise a model? (choose the best answer)
Group of answer choices

to cover up evidence from a previous experiment

to show off to other scientists

to add unnecessary details to the model

in order to better explain what is happening during a phenomenon

When modeling it is important to (pick two)
Group of answer choices

show beginning, middle and end if it fits the phenomenon

only use one color

make sure there is only drawings and nothing written

use zoom in bubbles to show the unobservable

Which of the following is NOT a limitation of a model
Group of answer choices

inaccurate colors

the type of material used to create the model

a messy model

shapes that are an approximation

Answers

Answer:

First Question: in order to better explain what is happening during a phenomenon

Second Question: show beginning, middle and end if it fits the phenomenon; use zoom in bubbles to show the unobservable

Third Question: the type of material used to create the model

Explanation:

First Question: You would not revise a model to "cover up evidence," that's scientifically immoral and should not be done, and showing off to other scientists is not the point of revising something.

Second Question: You should use more than one color to differentiate different parts of the model, but don't overwhelm it with color. There should be some labels in the model, so some writing is necessary.

Third Question: Inaccurate color representation does not technically limit a model unless color scheme is important, so this could be an answer, but not likely. A messy model limits a model because it makes it hard to read. Approximating shapes is a limitation because it portrays an incorrect representation of what system the model is of. The type of material used to create the model is most likely the right answer.

A element is having atomic number 82. find the number of its protons and electrons

Answers

Answer:

The number of its protons and electrons are 82 each

Explanation:

Atomic no of an element = 82

Atomic no = No of protons

⇒ No of protons = 82

Electrons are negatively charged particle and Protons are positively charged particles.

No of electrons = 82

Hence, the element is Lead with 82 protons and electrons

what is the name of CH3CH2CH2C(O)CH2CH3

Answers

Answer:

1-methoxypropane

Explanation:

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Rank lead, phosphorus, and barium in order of increasing ionization energy.A) Pb < P < Ba B) Ba < P < Pb C) Pb < Ba < P D) Ba < Pb < P why are Some substances allowed to cross the cell membrane while other substances are not? Californians called many migrants "Okies because1.)the migrants worked in the fruit-picking industry.2.)the migrants were old and ready to retire.3.)Californians wanted to discriminate against them.4.)Californians wanted to welcome them. What is the density of a 15 g object that has a volume of 6 cm?? A local park currently has 150.04 square meters of grassy area. The members of a community group have proposed the followingchanges to the way the park land is used Clearing dead trees and shrubs would allow for 37 51 square meters of additional grassy area. Removing an unused picnic pavilion would allow for 82.70 square meters of additional grassy area. Updating and expanding the playground would reduce the grassy area by 54 19 square metersHow many square meters of grassy area would the park have if all of the community group's proposals were applied? An environmental engineer is tasked with determining whether a power plant cooling system is heating the water it uses more than allowed by environmental regulations. They measure water temperatures at the cooling system input and the cooling system output for several different days in several different seasons. A list containing these measurements is below:Sample Input Temp (deg F) Output Temp (deg F)1 57.6 65.1 2 68.9 74.4 3 68.1 74.7 4 47.7 55.4 5 48.1 51 6 67.2 71.9 7 69.9 79.2 8 48.1 57.2 9 35 41.4 10 56 61 11 44.3 50.8 12 65 70.5 13 48.3 56.9 14 54.9 61.7 15 60.4 67.3 Do a statistical analysis on this data to determine if the temperature change between the input and output of the cooling system is different than 6 degrees.1. What does your analysis indicate?a. The cooling system changes the temperature of the water by an amount different than 6 degrees.b. The cooling system changes the temperature of the water by 6 degrees.2. What is the P-Value associated with your decision above?a. 0.001b. 0.026c. 0.049d. 0.070e. 0.110f. 0.131g. 0.148h. 0.201i. 0.278j. 0.289 Por la maana yo _____ a clases.asistsasistsasisitenasisitenasistesasistesasistimosasistimosasistoasistoasiste A country with a very small population is concerned about its birthrate. Whatmight the country do in order to raise its crude birthrate?A. Provide little or no prenatal health careB. Raise rates of educationC. Provide health care and job training for women with childrenD. Make contraception easier to obtain 4. Is the expression (10x + 5 - 6x - 2) equivalent to (5x + 1 - (x - 2))? [True or False]Prove this using algebra - Show work]. Why is it important to understand how different body systems interact when developing a training plan? Using the image in the previous question, calculate the amount of force that the truck applied to the car if the truck was accelerating at a rate of 5 m/s21. What formula would you use?2. Calculate the force of the truck hitting the car, use the correct unit for force: 3. Which law of motion supports your answer? On a roller coaster when does the car have potential kinetic energy and when is energy transferred? 5. Drew had $48 in his savings account. Eachweek he added $8 to his account. Stacie had$87 in her account. Each week she took $5out. After how many weeks will they have thesame amount of money in their savingsaccounts? Read the passage. First,identify two themes,Then, identify the evidence from the passage that best supports each theme.Now that Mia was a seventh grader, she could officially try out for the swim team. Mia didn't have much experience, but she had always dreamed of being a swimmer. Tryout week arrived, and Mia did her best. 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Check the four best answers.shivers down the spinea belief that the narrator is unreliablea contradictory urge both to continue reading or watching and to stopconfidence that everything will work out in the endpleasure in unspeakable things such as blood and goreexcitement in knowing that you are safe What two properties of life can be connected to each other? Explain how Try Flocabulary.com. It is learning rap songs. I think it would help ya'll a little bit. How is the simile used in this sentence? Please help will give brainliest if correct, Thank you! -17 + 20 + (-3)SOMEBODY HELP ME PLS ASAP