i need help ASAP ! Please

Answer:

23, B

Explanation:

The mass of an atom is determined by the number of Protons + Neutrons. Here, if we assume the units is AMU (Which means the mass unit for a proton and neutron would be basically 1), the answer would be 11 + 12 = 23 AMU, which is B.

Answer:

B) 23

Explanation:

Relative Mass = number of protons + number of neutrons

Relative Mass = 11 + 12

Relative Mass = 23

Answer:

Boiling occurs when a liquid changes to a gas below its surface as well as at the surface. The temperature at which a liquid boils is called its boiling point. The opposite of vaporization is called condensation. Sublimation occurs when the surface particles of a solid gain enough energy that they form a gas.Boiling occurs when a liquid changes to a gas below its surface as well as at the surface. The temperature at which a liquid boils is called its boiling point. The opposite of vaporization is called condensation. Sublimation occurs when the surface particles of a solid gain enough energy that they form a gas.Boiling occurs when a liquid changes to a gas below its surface as well as at the surface. The temperature at which a liquid boils is called its boiling point. The opposite of vaporization is called condensation. Sublimation occurs when the surface particles of a solid gain enough energy that they form a gas.Boiling occurs when a liquid changes to a gas below its surface as well as at the surface. The temperature at which a liquid boils is called its boiling point. The opposite of vaporization is called condensation. Sublimation occurs when the surface particles of a solid gain enough energy that they form a gas.

Answer:

Zirconium, Zr, 40

Explanation:

Protons can be found by looking at the atomic number. Neon's atomic number is 10, so just multiply 10 by 4 and you get 40.

Answer:

Explanation:

A. It can be greater than the atomic number

Answer:

Whats the sentence

Explanation:

Answer:

Atoms form chemical bonds to satisfy the octet rule and to become stable.

Got it right on Edg. 2020, hope this helps!

Answer:

1×10^-1 N

I took the quiz

Answer:

A

Explanation:

I just took the test.

Answer:

A. intermolecular forces.

Answer:

CO2 is classified as a compound

Explanation:

Answer: I am actually studying about Stars, so I got you.

3. As the temperature of a star Increases, it's luminosity increases.

As the temperature of a star decreases, it's luminosity decreases.

4. Hot and Bright. The bigger the star, the hotter it gets is from what I learned.

Answer: As the temperture of a main sequence star increases, the luminosity increases, vice versa

Cool and bright

Explanation:

Speed in excess of 100 km/h, which is 208.8 km / h

Linear motion consists of 2: constant velocity motion with constant velocity and uniformly accelerated motion with constant acceleration  

• An equation of uniformly accelerated motion  

[tex]\large {\boxed {\bold {x=xo+vo.t+\frac {1} {2} at ^ 2}}}[/tex]

vt = vo + at  

vt² = vo² + 2a (x-xo)  

x = distance on t  

vo / vi = initial speed  

vt / vf = speed on t / final speed  

a = acceleration  

I think it's not chemistry but physics

Δx = 290 m

vf = 0⇒stop

Δt = 10 s

We use the formula in the question

[tex]\tt \Delta x=\dfrac{1}{2}(vf+vi)\Delta t\\\\290=\dfrac{1}{2}(0+vi).10\\\\vi=58~m/s=\boxed{\bold{208.8~km/h}}[/tex]

Answer:

Explanation:

Glucose  has    6  number  of  carbon  atoms,  12  atoms  of  oxygen  and   6  atoms  of  oxygen

The  total  number  of  glucose  atom is  24  atoms

The  atom  of  hydrogen is twice  that  of   carbon  

that  is (6.02 x10^22) x2=1.204 x10^23atoms

the  number  of  moles  of  hydrogen  is   solved  as   follows

1mole  =  6.02x10^23 atoms  what   about  1.204 x10^23=

{(1.204x10^23)/(6.02 x10^23)}=0.2moles

The  moles  of  glucose

1   atom  of   glucose=  6.02 x10^22  x4 =2.408 x10^23  atoms

moles= { (2.48 x10^23)/(6.02  x10^23)}=0.41moles

Hope this helped :)

Answer: +2

Explanation: Formula of oxide is MgO, because oxidation state of Mg in MgCO3 is +2.

Answer:

5s

Explanation:

The 4d sublevel is filled next, after the 5s sublevel.

Answer:

I think....I'm not sure......the plats of earth shifting?

Explanation:

Answer:

because Electrons are not little balls that can fly

Explanation:

Fluorine atoms = 1.517 x 10²³

The mole is the number of particles contained in a substance

1 mol = 6.02.10²³

Moles can also be determined from the amount of substance mass and its molar mass

[tex]\large{\boxed{\boxed{\bold{mol=\frac{mass}{molar\:mass}}}}[/tex]

Proust stated the Comparative Law that compounds are formed from elements with the same Mass Comparison so that the compound has a fixed composition of elements

[tex]\tt mass~F=\dfrac{4.Ar~F}{MW~C_2F_4}\times mass~C_2F_4\\\\mass~F=\dfrac{4.19}{100}\times 6.3=4.788~gr[/tex]

[tex]\tt =\dfrac{4.788}{19}=0.252[/tex]

[tex]\tt 0.252\times 6.02\times 10^{23}=1.517\times 10^{23}[/tex]

Answer:

You will be 27 years old (✿◠‿◠)

Answer:

Order: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune

Inner Planets: Mercury, Venus, Earth, Mars

Outer Planets: Jupiter, Saturn, Uranus, Neptune

Explanation:

.

Answer:

D10 is answer

Explanation:

Magnetism can result from unpaired electrons in a given ion of an element, depending on the spin states of the electrons and d10 is fully filled

The d 10 is the d shell configurations which is most likely to be the best magnet.

Configurations are defined as the way that parts are joined together to form the computer system. The arrangement of electrons scattered throughout the orbital shells and subshells is depicted by the electron configuration of an atom. Divide the periodic table into pieces to represent the atomic orbitals, the areas where electrons are stored, in order to determine an electron configuration. The s-block is represented by groups one and two, the d-block by groups three through twelve, the p-block by groups thirteen to eighteen, and the f-block by the bottom two rows.

Depending on the spin states of the electrons and whether or not d10 is completely filled, magnetism can emerge from unpaired electrons in a specific ion of an element.

Thus, the d 10 is the d shell configurations which is most likely to be the best magnet.

To learn more about configurations, refer to the link below:

https://brainly.com/question/13410673

#SPJ2

Answer:

THE LAST ONE

Explanation:

Answer:

2

Explanation:

because 100÷50=2m÷v=d

Answer:

I hope this helps! Can I have Brainliest plz :)

Explanation:

Explanation:

A.

AgNO₃ + KCl → AgCl + KNO₃ (Already Balanced)

B.

H₂O + SO₃ → H₂SO₄ (Already balanced)

C.

2KI + Cl₂ → 2KCl + I₂

D.

2NaHCO₃ → Na₂CO₃ + H₂O + CO₂

E.

Zn + 2HCl → ZnCl₂ + H₂

F.

BaCl₂ + Na₂SO₄ → BaSO₄ + 2NaCl

G.

C₃H₈ + 5O₂ → 3CO₂ + 4H₂O

H.

2Al + 3CuCl₂ → 2AlCl₃ + 3Cu

Answer:

A

Explanation:

The answer is A) because the A container has tightly packed molecules but not as tight as C so that means A is liquid, and C is a solid which makes B a gas

Answer:

The answer would be A

Explanation:

because in the first picture Liquid could be in many shapes like If I put water in my water bottle it would be the same shape as the water bottle.

In the third picture, the solid molecules will always be so close to each other like they will be stick to each other.

In the second picture, It will be separate always, as it cant stick to each other.

I hope I helped you!!!!

:)

Answer:

mass

Explanation:

The amount of kinetic energy an object has, depends on its mass and its speed.

Answer: motion

Explanation:

I just took the quiz in edging

Answer: type of mutation that causes the replacement of a single base nucleotide with another nucleotide of the genetic material, DNA or RNA. The term point mutation also includes insertions or deletions of a single base pair.

Explanation:

Answer:

Mutation is important as the first step of evolution because it creates a new DNA sequence for a particular gene, creating a new allele.  

Explanation:

Mutations put new DNA combinations into a population

Answer:

Poorly insulated attics, windows not being insulated in the winter

Explanation:

One reason is so we do not get cold in the winter and the reason we have a home is to protect us from the weather or put a shelter above us. Second reason is so we don't get hypothermia in the winter time.

Answer: 1.04 is the density.                   Explanation: Just like a solid, the density of a liquid equals the mass of the liquid divided by its volume; D = m/v.    52.0/50.0=

Answer:

Point a becuse it is the closest to -5*

Explanation:

Answer:

-5

Explanation:

Negative numbers get you confused.

- = Negative

5 = Number

You know 5 right?

I I I I I - 5

5 is a really less number already.

If you add a negative it will be double small.

Now lets figure out the problem:

What is the freezing point on this graph?

-5 is the smallest number

5 is bigger than -5

15 is bigger than 5 and -5

25 is bigger than all the numbers.

I know what your thinking. 25 is totally not the answer. Its the biggest number. Freezing is a very low number. What number is the lowest out of -5, 5, 15, 25. You see -5.

Therefore, -5 is freezing.