According to the table below, which two atoms have the same mass
number?
1 point
Atom
Photons
Neutrons
Electrons
1
8
10
8
2
10
9
10
3
9
9
9
4
8
8
Atoms 2 and 3
Atoms 1 and 2
Atoms 1 and 4
Atoms 2 and 4

According To The Table Below, Which Two Atoms Have The Same Massnumber?1 PointAtomPhotonsNeutronsElectrons181082109103999488Atoms

Answers

Answer 1

Answer:

atoms 1 and 4

Explanation:


Related Questions

need answer ASAP

If 20.0g of water at 56.2°C absorbs 195 J of heat, what is the final temperature?
^in degrees celsius

What mass of water would increase in temperature from 45.0°C to 98.0°C after
absorbing 6830 J of energy?
^IN GRAMS

Answers

Answer:

1. 58.5°C = Final temperature

2. Mass of water = 30.8g

Explanation:

The general equation of specific heat of a substance is:

Q = C*m*ΔT

Where Q is the heat involved in Joules,

C is specific heat (Water = 4.184J/g°C),

m is mass of substance,

ΔT is change in temperature (Final temperature - Initial temperature)

For the first problem:

1. 195J = 4.184J/g°C*20.0g*ΔT

ΔT = 2.3°C = Final T - Initial T

ΔT = 2.3°C + 56.2°C =

58.5°C = Final temperature

In the seconf problem:

2. 6830J = 4.184J/g°C*m*(98.0°C-45.0°C)

6830J / 4.184J/g°C*53°C = m

30.8g = m

Mass of water = 30.8g

how does the understanding of electron location allow us to change the world?

Answers

Answer:

The absorbed energy will change the electron's position. We can never know both the momentum and position of an electron in an atom.

Explanation:

The solids and liquids with the strongest intermolecular forces of attraction will have the
lowest melting and boiling points.
a. TRUE
b. FALSE

Answers

trueeee!!!
step by step explanation

Is a tooth made out of matter or not matter?

Answers

Human teeth are made up of four different types of tissues.

What is the density of a block with a volume of 5 cm3 and a mass of 20 g?​

Answers

Answer: 4g/cm^3 or 4000g/L (4kg/L)

Explanation:

I'm not sure what units the question intended so I put both. For the first one, the equation for density is mass/volume so I divided the 20g by 5cm^3 to get 4g/cm^3. Just in case those aren't the intended units for volume and is instead liters, one cm^3 equals one ml. In addition, there are 1000ml in every liter so you can determine the amount per liter by multiplying 4g/ml by 1000 to get 4000g/L or 4kg/L.

I hope this helps.

Sodium chloride (NaCl) is formed in a chemical reaction between sodium (Na) and chlorine (Cl2).
What is sodium chloride?
14.
A.
an element
B.
a mixture
C.
a compound
D.
an atom

Answers

I think it is compound

convert 80kg into grams

Answers

Answer:

80000 grams

Explanation:

kilo  means 1000

80 x 1000 = 80, 000

what volume of water has a mass of 1 kg

Answers

Answer:

[tex]V=0.001\ m^3[/tex]

Explanation:

Mass, m = 1 kg

The density of water, d = 1000 kg/m³

We need to find the volume of water. The formula for the density of an object is equal to mass divided by volume. Its formula is :

d = m/V

V is the volume of water

[tex]V=\dfrac{m}{d}\\\\V=\dfrac{1\ kg}{1000\ kg/m^3}\\\\=0.001\ m^3[/tex]

So, the volume of water is [tex]0.001\ m^3[/tex].

Answer:

Volume of water has a mass of 1 kg  is explained below in details.

Explanation:

One liter of h2O has a volume of approximately specifically one kilogram when estimated at its maximum frequency, which happens at about 4 °C. It observes, therefore, that thousand of a liter, recognized as one milliliter (1 mL), of h2O has a volume of about 1 g; 1000 liters of h2O has a volume of about 1000 kg (1 tonne).

When a chemical change occurs:

A) the law of conservation of mass is always obeyed
B) the chemical properties of new substances are different from the ones you started with
C) all of the options are true
D) atoms are rearranged

Answers

Answer:

Are composed together

Explanation:

How many molecules are in 4.5 moles of Ca(OH),?​

Answers

Answer:

We will use dimensional analysis to solve this.

We will need to know Avogadro's number, which is 6.02 × 10²³.

4.5 mol × [tex]\frac{6.02 * 10^{23} molecules}{1 mol}[/tex] = 2.71 × 10²⁴ molecules.

There are 2.71 × 10²⁴ molecules in 4.5 moles of Ca(OH).

61 molecules will be the answer most definitely :)

Mass Number
19
Atomic Number
Elements
Fluorine
Neon
Aluminium
Phosphorus
10
13
15
a. i. Which of the elements would not be capable of forming compounds​

Answers

Answer:

Explanation:

The atomic number is the number of protons inside the nucleus of an atom. ... 1.1% carbon 13 with 7 neutrons and a mass of 13.00335 u (measured), and a ... The value given is the mass number of the most stable isotope of that element. ... That's because the chemistry of helium is more like neon (Ne), argon (Ar), etc.

According to collision and transition state theories, what is the importance of activation energy?

Answers

According to the collision theory, the following criteria must be met in order for a chemical reaction to occur: Molecules must collide with sufficient energy, known as the activation energy, so that chemical bonds can break.

Could I have branliest, heart with 5 stars

Thanks and have a happy Christmas

Collision theory expresses that substance responses (in the gas stage) happen because of crashes between reactants.

Importance of activation energy:

To really start a reaction, impacts should be adequately lively (dynamic energy) to break compound bonds; this energy is known as the Activation energy. As the temperature rises, atoms move quicker and impact all the more energetically, significantly improving the probability of bond breakage upon crash.

Find more information about Activation energy here:

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To make a balanced equation, 6 H2O + 6 CO2 ---> C6H12O6 + _

Answers

Answer:

6O₂

General Formulas and Concepts:

Chemistry/Biology

Photosynthesis Equation: 6H₂O + 6CO₂ → C₆H₁₂O₆ + 6O₂

Explanation:

Most of the equation comes from the Photosynthesis Equation. Plants take in water and carbon dioxide and sunlight (energy) to produce glucose and oxygen. When we balance the equation and predict reaction. we should get   6O₂ as our answer.

I NEED HELP RN 40 POINTS

Answers

Answer:

B.) Adding a source of carbon dioxide to the water.

Explanation:

I had that question too.

NEED HELP PLSSSS THANK UU

Answers

Answer: rotation

Explanation:

orbitttttttttttt

Explanation:

Identify two reasons why the relative size of an atom become smaller due to the loss of electrons .

Answers

Answer:

nucleus as electrons are being added to the same principal energy level. These electrons are gradually pulled closer to the nucleus because of its increased positive charge. Since the force of attraction between nuclei and electrons increases, the size of the atoms decreases.

Explanation:

Nuclear attractive pull to the electrons results in smaller atomic radius. Two reasons that leads the size of an atom smaller by electron loss are nuclear pulling and emptying outermost orbital.

Why atomic radius reduces by electron loss?

The nucleus have a net positive charge and electrons are negative in charge, thus, each electron experience a nuclear attractive pull. However, each electrons are shielded slightly from this attraction by the surrounding electrons.

The reasons which make the atomic radius smaller are the following.

By losing electrons the total number of electron is reducing therefore, the screening or shielding of an electron by other electron from the nuclear attractive pulling reduces, and thus due to the nuclear attraction, the orbitals shrinks inwards and reduces the atomic size. By losing electron from the outermost orbital if it contains only one electron then the orbital becomes empty and the atomic radius shrinks to the penultimate shell or orbital.

Therefore, due the two reasons mentioned above, the atomic radius reduces by electron loss.

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Based on the diagram, which statement explains how energy is conserved
during this chemical reaction?
А
B
Potential energy
of a system
С
Reaction progress
O A. The potential energy gained by the reaction system (A) is lost
from the surroundings.
B. The potential energy lost by the reaction system (C) is gained by
the surroundings
C. The potential energy changes indicated by A and B involve energy
lost by the surroundings.
D. The potential energy lost during the formation of products (B) is
lost by the surroundings.
PLEASE HELP and try not to get it wrong :(

Answers

Answer:

it's B it's B It's B BBBBBBBBBBBBBBB

Which statement describes a neutral atom?
A. positively charged, with the number of protons greater than the number of electrons B. negatively charged, with the number of electrons greater than the number of protons C. the number of protons equaling the number of electrons, with varying numbers of neutrons
D. the number of protons equaling the number of valence electrons only

Answers

Answer:

C

Explanation:

A neutral atom always has the same number of electrons and the total number of protons.

She remembered that chemical equations can summarize what happens in a chemical reaction. What is the name of the two parts found on the left side of the equation below? 4 Fe + 3O2 → 2Fe2O3 A. products B. reactants C. scientific notation D. synthesis

Answers

Answer:

The name of the two parts found on the left side of the equation is reactants.

Explanation:

Chemical reaction is the way one substance reacts against another. That is, a chemical reaction is that chemical process in which two or more substances, by the action of an energy factor, are converted into other substances. The new substance (s) that are formed usually present a totally different appearance from that of the starting substances.

In a chemical reaction there are the substances that react, that is, the reactants, and the substances produced, called products.

A chemical reaction is represented by a chemical equation. The formulas of the reactants are written on the left, and those of the products on the right, both separated by an arrow indicating the direction of the reaction.

Reactants ⇒ Products

Then, the name of the two parts found on the left side of the equation is reactants.

9.25x10^-8 x6.40x10^3 in scientific equation

Answers

Answer:

5.92E-4 or 5.92x10^-4

Explanation:

The main product of the photosynthesis reaction is
OA.
protein.
OB.
sugar.
Oc.
fat.
OD.
DNA.

Answers

Answer: Sugar

Explanation: Because after photosynthesis (Carbon dioxide, water, and sunlight) react, they make two products. Glucose (A sugar) and Oxygen.

Which of the diagrams below shows an atom that is not a form of hydrogen?

Answers

Answer:

I believe is the npp i kinda forgot how to do these lol

Diagram with npp type shows an atom that is not a form of hydrogen.

What is an atom?

An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.

The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.

Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.

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Please help
As the temperature increases, the molecular motion of the molecules decreases and it
becomes difficult to overcome the polar attractions.
a. TRUE
b. FALSE

Answers

true
step by step explanation:

Which of the following best represents and explains the formula for a compound made from fluorine and hydrogen?

A. HF, because both fluorine and hydrogen are capable of forming only one ionic bond.

B. HF, because both fluorine and hydrogen are capable of forming only one covalent bond.

C. H2F, because fluorine is short of two electrons, and hydrogen is short of one electron.

D. H2F, because fluorine is capable of forming one, and hydrogen is capable of forming two covalent bonds.

Thank you ​

Answers

The answer is B

HF, because both fluorine and hydrogen are capable of forming only one covalent bond.

The formula for a compound made from fluorine and hydrogen is HF, because both fluorine and hydrogen are capable of forming only one covalent bond. The correct option is option B.

What is chemical Compound?

Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion. Covalent  bond is weaker than ionic bond.

There are two types of chemical compound one is covalent compound and other is ionic compound, covalent compound formed by sharing of electron and ionic compound formed by complete transfer of electron.

The formula for a compound made from fluorine and hydrogen is HF, because both fluorine and hydrogen are capable of forming only one covalent bond.

Therefore, the correct option is option B.

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What type of plate boundary forms
snowy mountains?
J. convergent
K. divergent
L. transform
M. transition

Answers

Answer:

I believe it's j, convergent plate boundaries

The type of plate boundary that forms snowy mountains are convergent plate boundaries. option J is correct.

What are convergent plate boundaries?

The convergent plate boundaries are which consist of two plates that move toward each other which results in the process called collision of two plates with each other.

The snowy mountains are full of snow which melts due to the change in temperature and leads to the formation of different plates and boundaries and the collision of two continental plates leads to the formation of this.

Therefore, option J is correct, the type of plate boundary that forms snowy mountains are convergent plate boundaries.

Learn more about convergent plate boundaries, here:

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What effects do winds patterns have on climate

Answers

Prevailing winds bring air from one type of climate to another. For example, warm winds that travel over water tend to collect moisture as they travel; the water vapor in the air will condense as it moves into colder climates, which is why temperate coastal areas often receive heavy rainfall.

Hope it Helps! T^T

CaO + H2O -> Ca(OH)2
3.50g of Ca(OH)2 was made from 4.20g of CaO? What is the % yield of Ca(OH)2?

Answers

The % yield of Ca(OH)₂ : 62.98%

Further eplanation

Percent yield is the compare of the amount of product obtained from a reaction with the amount you calculated

General formula:

Percent yield = (Actual yield / theoretical yield )x 100%

An actual yield is the amount of product actually produced by the reaction. A theoretical yield is the amount of product that you calculate from the reaction equation according to the product and reactant coefficients

Reaction

CaO + H₂O ⇒ Ca(OH)₂

mass CaO= 4.2 g

mol CaO(MW=56,0774 g/mol) :

[tex]\tt mol=\dfrac{mass}{MW}\\\\mol=\dfrac{4.2}{56,0774 g/mol}\\\\mol=0.075[/tex]

mol Ca(OH)₂ based on mol CaO

mol ratio CaO : Ca(OH)₂,= 1 : 1, so mol Ca(OH)₂ = 0.075

mass Ca(OH)₂(MW=74,093 g/mol) ⇒ theoretical

[tex]\tt mass=mol\times MW\\\\mass=0.075\times 74,093 g/mol\\\\mass=5.557~g[/tex]

% yield :

[tex]\tt =\dfrac{actual}{theoretical}\times 100\%\\\\=\dfrac{3.5}{5.557}\times 100\%\\\\=62.98\%[/tex]



HELP ASAP EILL MAKE BRAINLEST Students are conducting a la estimating the time takes for the cell cycle in normal chocols They find that the average time for one complete el cycle is 22 hours What arence would they expect to see nerous chien
Cancerous chicken cels will spend more time in the phase
Cancerous cells will not complete all phases of the cell cyce
Cancerus chin cells will complete moss in a shorter amount of time
O Cancerous chicken cols and normales will have the same total amount of time to complete the cell cycle

Answers

Answer: I don't know if this helps but here's some information I think might help.

Usually, cells will take between 5 and 6 hours to complete S phase. G2 is shorter, lasting only 3 to 4 hours in most cells. In sum, then, interphase generally takes between 18 and 20 hours. Mitosis, during which the cell makes preparations for and completes cell division only takes about 2 hours. Calculate the percentage of time spent in each phase by counting the total number of cells in each phase (total in interphase, in prophase, etc.) and dividing each by the total number of cells you counted. How do cancer cells differ in total time required for mitosis? Cancer cells produce 117 minutes faster than regular cells. ... Normal cells require 640 minutes during interphase, cancer cells only need 380. For prophase, cancerous cells need 15 minutes less than regular cells. Another hallmark of cancer cells is their "replicative immortality," a fancy term for the fact that they can divide many more times than a normal cell of the body. In general, human cells can go through only about 40-60 rounds of division before they lose the capacity to divide, "grow old," and eventually die 3.

51 liters of helium and 29 liters of oxygen (O2), both at 35°C and 1.0
atmosphere, are pumped into a tank that has a volume of 5 liters. Calculate the number
of moles of each component and the total pressure in the tank at 35°C

Answers

Answer:

If I have an unknown quantity of gas at a pressure of 1.2 atm, a volume of 31 liters, ... If I contain 3.0 moles of gas in a container with a volume of 60. liters and at a ... Mixtures of helium and oxygen are used in scuba diving tanks to help prevent ... volume of 5.00 Lat 25.0C. Calculate the partial pressure of each gas and the ...

Explanation:

How many kilograms is 0.22 lb?
O A. 0.22 kg
O B. 0.454 kg
C. 0.0998 kg
O D. 0.49 kg

Answers

Answer:

C)0.0998kg

explanation:

1 POUND=0.453592...kg

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