An atom's mass number equals the number of

Answers

Answer 1

Answer:

Together, the number of protons and the number of neutrons determine an element's mass number: mass number = protons + neutrons. If you want to calculate how many neutrons an atom has, you can simply subtract the number of protons, or atomic number, from the mass number.

Explanation:

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Related Questions

Which is a characteristic of an atom?

Atoms are the largest unit of matter.

Atoms can be seen by the naked eye.

Atoms come in different varieties.

Atoms are created in the Earth’s core.

Answers

Answer:

its atomic number

Explanation:

which is defined as the number of units of positive charge (protons) in the nucleus. For example, if an atom has a Z of 6, it is carbon, while a Z of 92 corresponds to uranium.

Answer:

C. Atoms come in different varieties


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Which element is the most reactive?

Answers

Answer:

Cesium

Explanation:

Cesium is second from the bottom of this group, has 6 shells of electrons, and it matches the features of a reactive atom, making it the most reactive element.

list of elements whose name is derived from scientist names​

Answers

Answer:

Curium,Bohrium,Einsteinium,Lawrencium,Seaborgium,Ferminium

Explanation:

How many molecules are there in 3.00
moes of NH₃

Answers

No of moles=3mol

Now

No of molecules:

[tex]\\ \sf\longrightarrow No\:of\;moles\times Avagdro\:no)[/tex]

[tex]\\ \sf\longrightarrow 3(6.022\times 10^{23})[/tex]

[tex]\\ \sf\longrightarrow 18.066\times 10^{23}[/tex]

[tex]\\ \sf\longrightarrow 1.8066\times 10^{22} molecules [/tex]

Homeostasis in a constantly changing environment is a process known as

Answers

The Excretory system

What is the periodic table?

Answers

Answer:

 A Chart Of The Chemical Elements That Displays Them In Rows Horizontally In Order Of Increasing Atomic Number And Vertically According To Similarity Of The Chemical Properties Of Their Atoms.

how many grams of Zn are there in 0.54 mol of Zn

Answers

Answer:

35.3052 grams of zinc are there in 0.54 mol of zn.

What happens to the molecules of Nitrogen as it goes through deposition?

Answers

Nitrogen is often a limiting nutrient in many ecosystems because
A) there is much less nitrogen in the atmosphere than carbon.
B) elemental nitrogen is very rapidly used by most organisms.
C) nitrogen availability is being reduced by pollution due to fertilizer use.
D) most organisms cannot use nitrogen in its elemental form.

what is the difference between cyclic compound and straight chain compound in hydrocarbons reaction​

Answers

Explanation:

Cyclic Hydrocarbons

A cyclic hydrocarbon is a hydrocarbon in which the carbon chain joins to itself in a ring. A cycloalkane is a cyclic hydrocarbon in which all of the carbon-carbon bonds are single bonds. Like other alkanes, cycloalkanes are saturated compounds. Cycloalkanes have the general formula CnH2nCnH2n. The simplest cycloalkane is cyclopropane, a three-carbon ring.

What is the mass grams that are in 1 molecule of H2?

Answers

One MOLE of hydrogen atoms contains the same number of atoms as the number of hydrogen molecules in one MOLE of hydrogen molecules, i.e., Avagadros number. However, one mole of hydrogen atoms has a mass of 1 gram while one MOLE of hydrogen molecules has a mass of 2 grams
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How many atoms of oxygen in the chemical formula 2Ca(ClO2)2?

Answers

Answer:

Calcium Nitrate is made up of three different elements and contains a total of nine atoms. This compound's formula is Ca(NO3)2. There is one calcium atom, two nitrogen atoms, and there are six oxygen atoms in calcium nitrate

What did Fermi mean when he said, "The reaction is self-sustaining"?

The reaction reached critical mass.
A spontaneous chain reaction had been accomplished.
The nuclear reaction was out of control.
The nuclear reaction could be controlled and maintained.

Answers

Answer:

The nuclear reaction could be controlled and maintained.

Explanation:

People had initiated a self-sustaining nuclear reaction--and then stopped it. He had released the energy of the atom's nucleus and controlled that energy.

Fermi's achievement in setting off the first self-sustaining nuclear chain reaction from his design of an atomic pile led to a new Age of the Atom. The controlled release of nuclear energy was now a reality

is it possible to convert molecule to molecule?

Answers

Answer:

yes, it's possible to covert molecule to molecule

Explanation:

Converting between molecules and moles is done by either multiplying by or dividing by Avogadro's number.

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Need this answered immediately. 50 points.

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Answer:

a

b

d

c

a

Explanation:

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Answer:

Hey if its up tomorrow I can I can’t rn sorry :(

Explanation:

Imagine you are combining carbon and oxygen in a chemical reaction. If some of the carbon forms carbon monoxide instead of carbon dioxide, this would decrease the reaction's _____ of CO2.
A) total energy

B) C:O ratio

C) actual yield

D) theoretical yield

Answers

A- total energy
Hope this helps

3. A sample of gas has a volume of 364 mL at a temperature of 25 ᴼC. What will the volume be if the temperature is changed to 100 ᴼC while the pressure is kept constant?

Answers

Answer:

1027.9 mL, its easy

Explanation:

what's is the most stable oxidation state for chromium and iron

Answers

Chromium exhibits a wide range of possible oxidation states, where the +3 state is the most stable energetically. The +3 and +6 states are the most commonly observed in chromium compounds, whereas the +1, +4 and +5 states are rare.

when a candle burns both physical and chemical changes take place at identify these changes give another example of a familiar process in which both the chemical and physical changes takes place. ​

Answers

Answer:

So, the melting of wax and vapourisation of melted wax are physical changes. Chemical Changes : The wax near flame burns and gives new substances like carbon dioxide, carbon soot, water vapour, heat and light. LPG is another example of a familiar process in which both the chemical and physical changes take place.

write insoluble or soluble solution for the following mixtores
1
2
3
4
5

Answers

Gasoline in water = insoluble

acetone in nail polished = soluble

salt in alcohol = soluble

oil in vinegar = insoluble

tawas in water = soluble...

Sorry if i am incorrect......

please help!!!!!!! thank you :)

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what do you need help with?
i don’t see anything

A chunk of sulfur has a volume of 8.33 cm3. What is the mass of this sulfur? (Density of sulfur = 2.07 g/cm3.)

Answers

Explanation:

equations to note:

density= mass/volume

mass= volume *density

volume= mass/density

you have a volume- 8.33cm3

you have a density- 2.07 g/cm3

Answer:

8.33cm3 * 2.07g/cm3=  17.24g

mass= 17.24g

I want the C answer plss help meee

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Answer:

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Due to the fact that electrons are delocalized in graphite, it is a good conductor of electricity. Carbon atoms in graphite form hexagonal layers and are in covalent bonds with three other carbon atoms. Due to this non-bond electron configuration, each carbon atom conducts electricity in the form of a delocalized electron.

PLEASE HELP!!!!! i give a lot of points!!!!

Answers

Answer:

I think it s the third one

BTW yw if it's correct

One of the following species is not isoclectronic. A. PO4³-B. BrO4- C. H2SO4 D. XeF4 E. CCl4​

Answers

Answer:

फ्य्फ्य्क्ज्य्य्क्सुग्किग्क्सिगिदित्फ

Latisha runs a plant nursery. Which field of science would best help Latisha
learn how to grow plants?
O A. Life science
B. Space science
C. Earth science
D. Physical science

Answers

Answer:

A. Life science

Explanation:

Life science deals with organisms and plants are organisms.

C.5A What is the symbol of the atom shown below?*
8 points
8 electrons
8 protons
8 neutrons
N
c

Answers

..........................

What is "plant food"?

Answers

Answer:

Plant food is the sugars created via photosynthesis. The sugar created is glucose which can be used by the plant for energy and also to make other things like starch and cellulose.

Explanation:

Plant food is the sugars created via photosynthesis. The sugar created is glucose which can be used by the plant for energy and also to make other things like starch and cellulose. I hope this helps : )

Calculate the volume of an object with a density of .85 g/mL and a mass of 212 g.

Answers

Density=0.85g/mLMass=212g

[tex]\\ \sf\longmapsto Volume=\dfrac{Mass}{Density}[/tex]

[tex]\\ \sf\longmapsto Volume=\dfrac{212}{0.85}[/tex]

[tex]\\ \sf\longmapsto Volume=249.4mL[/tex]

Answer:

[tex]249.41 \: ml[/tex]

Explanation:

[tex]volume = \frac{mass}{density} \\ = \frac{212g}{0.85 \: g \: {ml}^{ - 1} } \\ = 249.41 \: ml[/tex]

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What state does a gas turn into if it reaches it freezing point?
O Solid
O Liquid
Gas
O None of the above

Answers

Answer:

Solid

Explanation:

According to Wikipedia

Deposition is the phase transition in which gas transforms into solid without passing through the liquid phase. Deposition is a thermodynamic process. The reverse of deposition is sublimation and hence sometimes deposition is called desublimation.

What type of decay is illustrated by the equation below?
A. alpha decay
B. beta decay
C. positron emission
D. electron capture

Answers

B. beta decay

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Answer:

Beta Decay (B)

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