Surface model,we used a supercell of
16.1106×16.1106×18.0 And a model of a 3 × 3
9 atoms..
if this answer helps you plz mark as brainlist..But, don't report my answer..The sum of protons and neutrons in the nucleus of an atom is called the
Answer:
The mass number.
Explanation:
Answer:
electrons and the mass number
Explanation: Because the neutrons and protons are added together
compare and contrast the arrangement of particles at the atomic level for a liquid and a solid
Answer:
Liquid particles are farther apart than solid particles.
Explanation:
Liquid particles are more far apart than solid particles, explaining why it takes the shape of its container and does not have a definite shape, but has a definite volume. Solid particles are more tightly packed together, and certain solids even have particle patterns at the atomic level, which is why it has a definite shape and does not change unless it changes states.
According to forces of attraction in molecules, molecules of liquid are far away as compared to molecules of solid.
What are forces of attraction?Forces of attraction is a force by which atoms in a molecule combine. it is basically an attractive force in nature. It can act between an ion and an atom as well.It varies for different states of matter that is solids, liquids and gases.
The forces of attraction are maximum in solids as the molecules present in solid are tightly held while it is minimum in gases as the molecules are far apart . The forces of attraction in liquids is intermediate of solids and gases.
The physical properties such as melting point, boiling point, density are all dependent on forces of attraction which exists in the substances.
Learn more about forces of attraction,here:
https://brainly.com/question/10957144
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Which statement best describes the equation CaCO3 + 2HCl → CaCl2 + CO2 + H2O?
CaCO3 is a reactant; it is present before the reaction occurs.
CaCl2 is a reactant; it is present before the reaction occurs.
CO2 is a reactant because it is most likely a gas.
H2O is a reactant because it is most likely a liquid.
Answer:
First answer
Explanation:
Reactants are always on the left side of the equation. So the first answer must be the correct one since CaCO3 is the only one found on the left side.
Answer:
A
Explanation:
PLEASE HELP ME I'M BEGGING YOU!!!!!
The digestive process involves two main types of digestion. Identify each one and explain how each works to break down food. Indicate where each type of digestion takes place in the body.
which is the most not accurate conclusion that can drawn from your lab groups investigation
Explanation:
sorry dude I really don't know the answer
Answer:
soooo whats the answer ??
is this correct im so confused.
Answer:
the last option!!!!
Explanation:
because its right
You arrive at science class in 45.0 seconds after running 90 m from math what is your speed
Answer:
1/2 a second per meter
Explanation:
Hope this helps!
11.Name the elements in period 4 that are no metals
Answer:
(Se) Selenium
(Se) is an element in group 16. Selenium is the first nonmetal in period 4.
Will give brainliest
Answer:
you said you will give brainliest sooooo hello!!!
Explanation:
you promised... UwU anyways have a great day!
Answer: Coefficient (green) = 1.586
Exponent (yellow) = -9
Explanation:
Standard form = 1.586 × 10-9
I'm only like 2 years late to this answer also the person above me is very useless and cringe
What are the alkali metals?
Answer:
Are the six chemical elements
Explanation:
Answer:
they are the first group in the periodic table
Explanation:
its on the far left of the table- this is the apex answer
What's the chemical formula for disulfur decafluoride?
Answer:
I think it is this:
S₂F₁₀
Hope this helps :)
Colin is visiting his grandparents at the beach. While walking on the beach, 17
he notices the tide pools that are left behind when the ocean recedes.
Which of the following explains the cause of tides?
A student wants to test if giving dogs a toy to play with makes their tail wag more. He gives dog toys to one group, while another group of dogs does not get any toys. He counts the number of times each dog wags their tail.
Experimental Group:
Control Group:
Answer:
Experimental: the dogs who get the toys
Control: the dogs who dont recieve a toy
Explanation:
expermental is the group that recieved the tested variable in this case that being the toy
control is the group that doesn't recieve the tested variable
What volume would a 200-gram sample of gold have if its density is known to be 19.3 g/mL?
Answer:
The answer is 10.36 mLExplanation:
The volume of a substance when given the density and mass can be found by using the formula
[tex]volume = \frac{mass}{density} \\[/tex]
From the question
mass of metal = 200 g
density = 19.3 g/mL
So we have
[tex]volume = \frac{200}{19.3} \\ = 10.3626943...[/tex]
We have the final answer as
10.36 mLHope this helps you
Explain how water molecules differ from
many other molecules.
Answer:
Water behaves differently from most other chemical compounds. In almost all substances the atoms and molecules move closer together as they get colder. They then solidify. Water, however, attains its greatest density at four degrees Celsius because the water molecules are packed closest together at this temperature.
Explanation:
The atmospheric pressure on a mountain is 500 mmHg and 1 atm is equal to 760 mmHg. What is the pressure in atm?
Answer:
≈ 0.6579 atm
Explanation:
The pressure in atmospheres is the ratio of the pressure on the mountain to one atmosphere, in corresponding units.
The pressure is ...
500 /760 atm = 25/38 atm ≈ 0.6579 atm
electron configuration for be+2
Answer:
atomic number of Be =4
electronic configuration :1s²2s²
but for Be2+ atomic number = 4-2 =2
electronic configuration : 1s²
What is measurement without a unit
Answer: Dimensionless
Explanation: A measurement without units is termed “dimensionless”
Hope this helped! :)
Answer:
A measurement without units is termed dimensionless.
Explanation:
Any units used in other system of measurement will be referred to as non-SI units.
I hope this makes sense and helps!
What is the frequency of an electromagnetic wave that has a wavelength of 4.55 x 10-3 m?
Answer:
v = 6.59 × 10¹⁰ Hz
Explanation:
Wavelength Formula: c = λv
Step 1: Define
c is the speed of light = 3.0 × 10⁸ m/s
λ is wavelength = 4.55 × 10⁻³ m
v is frequency in hertz
Step 2: Substitute and Evaluate for v
3.0 × 10⁸ = 4.55 × 10⁻³ · v
v = 6.59341 × 10¹⁰ Hz
Step 3: Simplify
We are given 3 sig figs.
6.59341 × 10¹⁰ Hz ≈ 6.59 × 10¹⁰ Hz
Preform the following calculations and round your answers to the correct number of
significant figures.
12.0 g / 0.0034 mL =
Answer:
3 529 411.76 kg / m3
Explanation:
If the DENSITY is 2 and the VOLUME is 800. What is the MASS?
Answer:
Mass (m) = 1600 kilogram
Explanation:
m = V × ρ
= 800 cubic meter × 2 kilogram/cubic meter
= 1600 kilogram
What do we mean when we say a chemical reaction is balanced? (Several choices can be correct.)
There is an equal number of solids, liquids, and gases on both sides of the reaction arrow.
There is an equal number of products on the right side of the equation as there are reactants on the left side of the
arrow.
The total number of each atom is the same on both sides of the reaction arrow.
The net charge on both sides of the reaction arrow is the same.
Answer:
2 and 3
Explanation:
A chemical reaction is defined as the process in which two or more reactants combined together chemically and gives a different product.
A balanced chemical equation involves an equal number of atoms on the reactant and product side. A balanced chemical reaction occurs when the atoms present on the reactant side or left side of the arrow is equal to the atoms on the product side or right side of the arrow.
The process of the balanced chemical equation is based on errors and trials in which the atoms in each element is identified, the atoms are then multiplied with required numbers, the addition of coefficient in front of molecules and check the equation at last.
Hence, the correct options are "2 and 3".
Which of the following is NOT a unit energy? (select all that applies)
Kelvin
Kelvin
calories
calories
Celsius
Celsius
Fahrenheit
Fahrenheit
joules
Answer:
Kelvin, Celsius, Fahrenheit
Explanation:
See my other answer for an explanation.
Joules, Kelvin and Calories
Which one of these is not one of the 7 characteristics of all organisms?
•able to reproduce
•able to maintain homeostasis
•able to produce its own food
•able to respond to stimulus
Answer its most likely going to be b. but it could also be d.
Explanation:
radio stations broadcast signals on two different frequency bands these are called _____ and ____
Answer: AM and FM frequency
Explanation:
What is the balanced equation that represents the reaction between hydrogen and nitrogen to make ammonia (NH3)?
Answer:
Balanced chemical equation:
N₂ + 3H₂ → 2NH₃
Explanation:
Chemical equation:
N₂ + H₂ → NH₃
Balanced chemical equation:
N₂ + 3H₂ → 2NH₃
Step1:
Left side of equation Right side of equation
N = 2 N = 1
H = 2 H = 3
Step 2:
N₂ + H₂ → 2NH₃
Left side of equation Right side of equation
N = 2 N = 2
H = 2 H = 6
Step 3:
N₂ + 3H₂ → 2NH₃
Left side of equation Right side of equation
N = 2 N = 2
H = 6 H = 6
The balanced equation of the reaction between hydrogen and nitrogen to produce ammonia would be: [tex]N_2 + 3H_2 --->2 NH_3[/tex]
Ammonia is produced when nitrogen reacts with hydrogen.
Stoichiometrically, 1 mole of nitrogen is required to react with 3 moles of hydrogen with 2 moles of ammonia being the product.
Thus, the balanced chemical equation for the reaction would become:
[tex]N_2 + 3H_2 --->2 NH_3[/tex]
More on balanced equations can be found here: https://brainly.com/question/7181548?referrer=searchResults
What type of reaction is this?
Two students are working together to build two models. Both models will represent the molecular structure of sodium bicarbonate, NaHCO3, commonly known as baking soda. The students are using toothpicks to represent bonds and jelly beans to represent atoms. Red jelly beans represent sodium atoms (Na), white jelly beans represent hydrogen atoms (H), black jelly beans represent carbon atoms (C), and blue jelly beans represent oxygen atoms (O). Identify the number of each color of jelly bean needed to make both models of NaHCO3. Explain your reasoning.
Answer:
Each student will need;
1 red jelly bean, 1 white jelly bean, 1 black jelly bean and 3 red jelly beans.
Explanation:
Sodium bicarbonate molecule, NaHCO3, or baking soda is composed of the following:
1 atom of sodium, Na;
1 atom of hydrogen, H;
1 atom of carbon, C, and
3 atoms of oxygen.
For each of the models to be built by the two students, these atoms are to be represented accordingly.
Since Red jelly beans represent sodium atoms (Na), white jelly beans represent hydrogen atoms (H), black jelly beans represent carbon atoms (C), and blue jelly beans represent oxygen atoms (O), each student will need;
1 red jelly bean, 1 white jelly bean, 1 black jelly bean and 3 red jelly beans.
A sample model is found in the attachment below:
Each student will need;
1 red jelly bean, 1 white jelly bean, 1 black jelly bean and 3 red jelly beans.
The explanation is as follows:
Sodium bicarbonate molecule, NaHCO3, or baking soda is comprise of the following:
1 atom of sodium, Na;
1 atom of hydrogen, H;
1 atom of carbon, C, and
3 atoms of oxygen.
Since Red jelly beans shows sodium atoms (Na), white jelly beans shows hydrogen atoms (H), black jelly beans shows carbon atoms (C), and blue jelly beans shows oxygen atoms (O).
Learn more: https://brainly.com/question/1605083?referrer=searchResults
Why is water considered "sticky"? What does that mean?
Answer:
Explanation:
Ya que las cargas eléctricas opuestas se atraen, las moléculas de agua tienden a atraerse unas a otras, haciendo el agua "pegajosa," como lo muestra el diagrama del lado derecho. Cuando las moléculas de agua se atraen unas a otras, se unen. Esta es la razón del porqué se forman las gotas
What tool best allows you to make observations of an objects color and texture? Balance Scale, Digital Camera, Digital Thermometer, or a Graduated Cylinder? I’ll give you 10 points!
Answer:
digital camera
Explanation:
