Help a girl out, please!!!!!

Help A Girl Out, Please!!!!!

Answers

Answer 1

Answer:

The answer will be Number C that is positively and part of the nucleus

Answer 2

Answer:

Part C best describes a proton, as it is positively charged and part on the nucleus


Related Questions

PLSSSS HELP WILL GIVE BRAINLIEST!!!!!!!!!

Answers

Answer:

72.2 moles of water is spilled

Explanation:

as moles=mass/mr

so mr of water is 16+2=18

13000/18=72.2

for the second one you can work out the moles of o2

by using moles= number of particles /6.02*10^23

so 4.65*10^26/6.02*10^23

so i got 772.4 on my calculator  to work out the amount of mass

u use the equation mass=moles*mr

so 777.2*16=12435g of oxygen gas

hope it helps :)

Answer:

ask someone else I will help later

Atoms are attracted to each other because____

A) electrons are attracted to protons because they have opposite charges
B) magnets pull them together
C) the protons are attracted to each other because they have the same charge
D) they have some energy

SOMEONE PLEASE HELP:/!

Answers

Answer:

A

Explanation:

Opposite charges attract therefore the electrons of one atom would be attracted by the nucleus (which contains protons). This heavily relies on a property called electronegativity. Which deals with the level of attraction a nucleus (the protons in the nucleus) have for electrons of other atoms.

PLEASE ANSWER! WILL GIVE A LOT OF POINTS! NEEDS EXPLANATION! NO LINKS OR I'LL REPORT!! PLEASE

distilling ethanol from a wine to determine the percentage of alcohol in a wine uses what type of property

physical property
bonding property
homeowner's property​

Answers

Answer:

Bonding property

Explanation:

Distillation deals with boiling solutions. Therefore the boiling point has a major part to play. Boiling point of a substance deals with the type of bonds present. For example water has hydrogen bonding which is a weak intermolecular force therefore the boiling point of water isn't that high. If we were to focus on an ionic compounds the boiling point would be higher because ionic compounds have ionic bonding which are stronger bonds which therefore requires more energy to break those bonds therefore a higher boiling point.

In this case for the ethanol to distill the property it's focusses on is the bonds. The strength of the bonds really.

2P(s) + X(g) ↔ P2X(g) at 20°C, Keq= 4.0 Initially, 2.0 moles of P(s) and 1.0 mole of X(g) are put into a 1.0L flask and allowed to react until they reach equilibrium. The molarity of P2X (g) present at equilibrium is: a. 1.0 M b. 0.8 M c. 0.4 M d. 0.1 M

Answers

Answer:

b. 0.8 M

Explanation:

Based on the reaction, Keq is defined as:

Keq = 4.0 = [P2X] / [X]

As P is a pure solid, its concentration is not taken into account

The initial concentration of X is 1.0mol/L = 1M, the equilibrium concentrations are:

[X] = 1M - X

[P2X] = X

Where X is the reaction coordinate

Replacing:

4.0 = X / 1-X

4.0 - 4.0X = X

4.0 = 5.0X

0.8M = X = [P2X]

Right answer is:

b. 0.8 M

HELP ME PLEASE ILL MARK U THE BRAINLIEST

Answers

Answer:

pentene-alkanes-C5H10

octane-alkanes-C 8H 18

butene-alkene-c4h8

decane-alkane-c10h22

Cholesterol has a formula of C27H46O. What is the mass in grams of one molecule of cholesterol?

Answers

The molar mass of cholesterol = 386.654 g/mol = 387 g/mole

3.2 mg cholesterol x 1 g/1000 mg x 1 mole/387 g x 6.02x1023 molecules/mole = 5.0x1018  molecules.

The mass in grams of one molecule of cholesterol, C27H46O is 6.43×10⁻²² g

Avogadro's hypothesis

6.02×10²³ molecules = 1 mole of Cholesterol

But,

1 mole of Cholesterol = 387 g

Thus,

6.02×10²³ molecules = 387 g mole of Cholesterol

How to determine the mass of one molecule

6.02×10²³ molecules = 387 g mole of Cholesterol

1 molecule = 387 / 6.02×10²³

1 molecule = 6.43×10⁻²² g of Cholesterol

Thus, the mass of 1 molecule of cholesterol is 6.43×10⁻²² g

Learn more about Avogadro's number:

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1. BaBr2(aq) + H2SO4(aq) →?
please balance the equation and predict the products

Answers

Answer:

BaBr2 (aq) + H2SO4 (aq) → BaSO4 (s) + 2 HBr (aq)

Explanation:

This is a precipitation reaction: BaSO4 is the formed precipitate.

The expression for the equilibrium constant for the reaction:
Ba3N2 (aq) + 6 H2O(1)-
3 Ba(OH)2 (aq) + 2 NH3 (9)

Answers

Answer:

[tex]Kc\frac{(Ba3N2)(H2O)^6}{(Ba(OH)2)^3(NH3)^2}[/tex]

Explanation:

Because kc equals products/reactants hope this helps :)

Which atom attracts electrons most strongly? br F Rb

Answers

Flourine because it has less energy levels hence strong nuclear force of attraction

Fluorine has the highest electronegativity in comparison to other elements therefore, the F atom attracts electrons most strongly.

What is electronegativity?

The electronegativity of an atom measures the tendency of an element to attract the bonded electrons pairs towards itself. The electronegativity of an atom is determined with respect to another bonded atom.

Electronegativity can be described as a chemical property of an atom or a functional group to attract electrons toward itself. The electronegativity of an atom depends on the atomic number and the distance of valence electrons from the charged nuclei.

When two different atoms are bonded through a bond. More electronegative will attract the electron density of the bond towards itself.

As we know, the electronegativity decreases as we move down the group in the periodic table. Fluorine is the most electronegative element in the periodic table therefore, Fluorine (F) will attract the electrons toward it most strongly.

Learn more about electronegativity, here:

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How many formula units are in 3.25 moles of silver nitrate

Answers

Answer:

AgNO 3 = 3.25 mol AgNO × 6.02 × 10 23 f.

Answer:

1.96 x 1024

Explanation:

Total number of elements present in the 3rd period is;

Answers


The third period contains eight elements: sodium, magnesium, aluminium, silicon, phosphorus, sulfur, chlorine, and argon.

¿Qué tipos de contaminantes identificamos?¿cuál de ellos tiene mayor concentración de los gases?¿Qué sucedió con la calidad del aire en el inicio de la pandemia? Y como va en la esta última semana de la pandemia?

Answers

Answer:

Bueno al principio pero empeorando con el paso del tiempo.

Explicación:

La calidad del aire es buena al inicio de la pandemia y hay menos infección en el aire pero con el paso del tiempo la infección se propaga a un ritmo más rápido y la calidad del aire se contamina con la infección que infecta a más personas. La pandemia reduce su intensidad cuando la gente sigue las reglas saludables que previenen la propagación de la pandemia en esa localidad por lo que podemos decir que la última semana de pandemia tiene menor número de pacientes.

Question 1 of 30
Why does atomic size increase as you go down a group on the periodic table?
A. Because the number of electron shells increases
B. Because there is more total attraction between electrons in the
shells and protons in the nucleus
C. Because the number of electron shells decreases
D. Because there is less total attraction between electrons in the
shells and protons in the nucleus
SUBMI

Answers

The answer will be A

Answer:

Explanation:

Down a group, the number of energy levels (n) increases, so there is a greater distance between the nucleus and the outermost orbital. This results in a larger atomic radius.

The chemical reaction
2 KBr + Cl2 → 2 KCI + Br2 is a:
a. synthesis reaction
b. decomposition reaction
C. single displacement reaction
d. double displacement reaction
e. combustion reaction

Answers

Answer:

synthesis reaction

Explanation:

the mixture of the chemical are not correct

Cells can regulate different processes in two ways. They can turn on and off the genes that make enzymes, or they can

A)

increase the activation energy of a reaction.

B)

increase the amount of energy needed to carry out the preferred process.

C)

regulate the enzymes that are already made.

D)

decrease the amount of energy needed to carry out the preferred process.

Answers

B.
Increase the amount of energy needed to carry out preferred process

write the application of thermodynamic​

Answers

All the refrigerators, deep freezers, industrial refrigeration systems, all types of air-conditioning systems, heat pumps, etc work on the basis of the second law of thermodynamics. ... All types of air and gas compressors, blowers, fans, run on various thermodynamic cycles.

Answer:

One of the most important things we can do with heat is to use it to do work for us. A heat engine does exactly this—it makes use of the properties of thermodynamics to transform heat into work. Gasoline and diesel engines, jet engines, and steam turbines that generate electricity are all examples of heat engines.

How do you find the number of moles of copper in copper gluconate? In my experiment I used 1.4 g of copper gluconate, and ended up with 0.1 g of copper.

Answers

Answer: 0.0016 moles of copper are present in copper gluconate

Explanation:

The number of moles is defined as the ratio of the mass of a substance to its molar mass.

The equation used is:

[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}[/tex] ......(1)

Given mass of copper = 0.1 g

Molar mass of copper = 63.55 g/mol

Plugging values in equation 1:

[tex]\text{Moles of copper}=\frac{0.1g}{63.55g/mol}=0.0016 mol[/tex]

Hence, 0.0016 moles of copper are present in copper gluconate

How many atoms are there in total in a molecule of sulfur trioxide SO3??​

Answers

Answer:

I got 1.14 mol So3 as the answer

hopefully if this could help

Which equation represents natural transmutation?
A)238920 +23490Th + 42He
490Th
B)UFO + 6 Na →6 NaF + U
C) 2713A1 + 42He3015P+ lon
D) H2O + H+ + OH-

Answers

Answer:

answer is a

Explanation:

i hope this helps you

What happens to the freezing point of a solution when more solute is added?

Answers

Freezing point depression is the phenomena that describes why adding a solute to a solvent results in the lowering of the freezing point of the solvent. ... Adding solute to a solvent will essentially dilute the solvent molecules, and according to Raoult's law, this leads to a decrease in vapor pressure.

Help quick, please!

which two terms are related to the energy you get by eating an apple?
chemical
kinetic
gravitational
potential

Please pick two of these!

Answers

Answer:

potential and chemical

Explanation:

What is the [H+] if the pH of a
solution is 1.65?
a
[H+] = [ ? ] x 10!?)
Coefficient (green)
Exponent (yellow)
Enter

Answers

Solution:

[tex][\text{H}^{+}] = 10^{-\text{pH}}[/tex]

[tex][\text{H}^{+}] = 10^{-1.65}[/tex]

[tex]\boxed{[\text{H}^{+}] = 2.2 × 10^{-2} \: M}[/tex]

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which method would be best for separating the compounds of a mixture that is made from two diffrent liquids

Answers

Answer:

fractional distillation since ot depends on the different liquids to have different boiling points

can u pls answer 22, 23, 24

Answers

Answer:

I'm terribly sorry but the download is not working for me! All it says is Download pdf, and when I click it, It does nothing except for refreshing the page!

Explanation:

SE LES DARA EL NUMERO ATOMICO DEBERAN REALIZAR LA CONFIGURACION ELECTRONICA ESCRIBE SU NOMBRE SIMBOLO Y UBICACION EN LA TABLA PERIODICA Z- 30,58,81,17,36

Answers

Answer:

Zinc, Cerio, Talio, Cloro y Criptón.

Explicación:

El zinc es el elemento que tiene el número atómico 30 y su símbolo es Zn. Se encuentra en el grupo 2B de la tabla periódica. El cerio es el elemento que tiene el número atómico 58 y su símbolo es Ce. Se encuentra en el grupo de lantánidos de la tabla periódica. El talio es el elemento que tiene el número atómico 81 y su símbolo es Tl. Se encuentra en el tercer grupo de la tabla periódica. El cloro es el elemento que tiene el número atómico 17 y su símbolo es Cl. Se encuentra en el séptimo grupo de la tabla periódica. El criptón es el elemento que tiene el número atómico 36 y su símbolo es Kr. Se encuentra en el grupo de gases nobles, es decir, en la tabla periódica del octavo grupo.

On a graph showing distance versus time, a horizontal line represents an object that is

moving at a constant speed.
increasing its speed.
decreasing its speed.
not moving at all.

Answers

Answer:

the anwser is; B: increasing its speed

Use the reaction N2(g) + 3H2(g) 2NH3(g) to answer the following questions

a. 1 pt: What does Le Châtelier's principle predict would happen to the equilibrium conditions if N2(g) + 3H2(g) were added to the system?

b. 1 pt: What would happen to the equilibrium if the pressure were decreased?

c. 2 pts: Write the equation for calculating Keq

d. 3 pts: Calculate the value for Keq given the following concentrations

[NH3] = 6 M

[H2] = 4 M

[N2] = 3 M

Answers

Answer:

cvbn

Explanation:

Which statement about the mass of an electron is correct? A The mass of an electron is equal to the mass of the proton. B The mass of an electron is less than the mass of the proton. с The mass of an electron is equal to the mass of a neutron. D The mass of an electron is greater than the mass of a neutron.​

Answers

Answer:

B

Explanation:

because mass of an electron is 1/2000.

The statement about the mass of an electron which is correct is: B. The mass of an electron is less than the mass of the proton.

An atom refers to a smallest, indivisible unit that comprises the matter that forms all chemical elements. Therefore, atoms are typically considered as the fundamental building blocks of matter which determines the structure of a chemical element.

Basically, an atom consists of three (3) distinct particles and these include;  

Protons. Neutrons. Electrons.

Electrons are the subatomic particles of a chemical element that are negatively charged with a magnitude of -1.

On the other hand, protons can be defined as the subatomic particles of a chemical element that are positively charged.

All of these subatomic particles of a chemical element has a mass. However, the mass of an electron is significantly less than the mass of proton, as a result of its extremely small size.

In conclusion, the mass of an electron is approximately 2000 times smaller than that of a proton and as such contributes almost nothing to the total mass of an atom.

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Write a balanced half-reaction for the oxidation of solid manganese dioxide to permanganate ion in basic aqueous solution. Be sure to add physical state symbols where appropriate.

Answers

Answer:

8 OH⁻(aq) + Mn(s) ⇒ MnO₄⁻(aq) + 4 H₂O(l) + 7 e⁻

Explanation:

Let's consider the following oxidation half-reaction that takes place in basic aqueous solution.

Mn(s) ⇒ MnO₄⁻(aq)

First, we will perform the mass balance. We will add 4 H₂O to the products side and 8 OH⁻ to the reactants side.

8 OH⁻(aq) + Mn(s) ⇒ MnO₄⁻(aq) + 4 H₂O(l)

Finally, we will perform the charge balance by adding 7 electrons to the products side.

8 OH⁻(aq) + Mn(s) ⇒ MnO₄⁻(aq) + 4 H₂O(l) + 7 e⁻

sodium reacts with chlorine gas to form sodium chloride. if you have 60 L of chlorine gas at STP and 30 g of sodium, how many grams of salt would be formed? i know the answer is 75 grams but i need to show my work and i don't know what to write for the equation

Answers

Answer:

75.9 grams of salt

Explanation:

The reaction is the following:  

2Na(s) + Cl₂(g) → 2NaCl(s)   (1)

We have:

m(Na): the mass of sodium = 30 g

V(Cl₂): the volume of the chlorine gas at STP = 60 L

So, to find the mass of NaCl we need to calculate the number of moles of Na and Cl₂.

[tex] n_{Na} = \frac{m}{A_{r}} = \frac{30 g}{22.99 g/mol} = 1.30 moles [/tex]

The number of moles of Cl₂ can be found by the Ideal gas law equation:

[tex] PV = n_{Cl_{2}}RT [/tex]

Where:

P: is the pressure = 1 atm (at STP)

R: is the gas constant = 0.082 L*atm/(K*mol)

T: is the temperature = 273 K (at STP)

[tex] n_{Cl_{2}} = \frac{PV}{RT} = \frac{1 atm*60 L}{0.082 L*atm/(K*mol)*273 K} = 2.68 moles [/tex]

Now we need to find the limiting reactant. From the stoichiometric relation between Na and Cl₂ (equation 1), we have that 2 moles of Na react with 1 mol of Cl₂, so:

[tex] n_{Na} = \frac{2 moles Na}{1 mol Cl_{2}}*2.68 moles Cl_{2} = 5.36 moles [/tex]

Since we have 1.30 moles of Na, the limiting reactant is Na.  

Finally, we can find the number of moles of NaCl and its mass.

[tex] n_{NaCl} = n_{Na} = 1.30 moles [/tex]

[tex] m_{NaCl} = n_{NaCl}*M = 1.30 moles*58.44 g/mol = 75.9 g [/tex]

Therefore, would be formed 75.9 grams of salt.

 

I hope it helps you!                

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