Answer:
120 g NaCl
General Formulas and Concepts:
Reading a Periodic TableDimensional Analysis (DA)Writing compoundsExplanation:
Step 1: Define
2.1 moles NaCl (sodium chloride)
Step 2: Define conversions
Molar Mass of Na - 22.99 g/mol
Molar Mass of Cl - 35.45 g/mol
Molar Mass of NaCl - 22.99 + 35.45 = 58.44 g/mol
Step 3: Convert (DA)
[tex]2.1 \ mol \ NaCl(\frac{55.84 \ g \ NaCl}{1 \ mol \ NaCl} )[/tex] = 122.724 g NaCl
mol NaCl and mol NaCl cancel outleft with g NaCl as final unitsStep 4: Check
We have 2 sig figs. Follow sig fig rules.
122.724 g NaCl ≈ 120 g NaCl
if a +2 ion has 18 electrons, what element is it
Name two or more body systems that work together.
Describe how they work together.
Answer:
All of your body systems have to work together to keep you healthy. Your bones and muscles work together to support and move your body. Your respiratory system takes in oxygen from the air
Explanation:
PLEASEHELP WILL MARK BRAINLIEST
Answer:
2. Isotope, one of two or more species of atoms of a chemical element with the same atomic number and position in the periodic table and nearly identical chemical behavior but with different atomic masses and physical properties. Every chemical element has one or more isotopes.
3. Since the vast majority of an atom's mass is found its protons and neutrons, subtracting the number of protons (i.e. the atomic number) from the atomic mass will give you the calculated number of neutrons in the atom. In our example, this is: 14 (atomic mass) – 6 (number of protons) = 8 (number of neutrons).
Explanation: Try rewording the questions when looking it up. Hope this helps
Answer:
9. 2(2n^2)
10. Electron Shell
11.-
12.-
13.-
14.-
Explanation:
i hope it helped
1)state Non-Mendillian's Law of Inheritance.
2)What are the two alleles for flower color in snapdragon?
Answer:
These questions are not chemistry darling. You have chosen the wrong subject
Help with chemistry question. Look at image.
Answer:
It is called the periodic table because of the way he elements are arranged. You'll notice they're in row and columns. The horizontal rows are called periods and the vertical columns are called groups. (so I believe it's A or C) sorry if I get this wrong..
Water and octanol are immiscible. This means that if you add them together, they will not mix, blend, or form a solution. Thus, when you pour them both in a beaker, you will see two separate layers. If you pour octanol (density = 0.824 g/mL) and water (density = 1.00 g/mL) into the same beaker, which layer will be on the bottom? Why?
Two students were doing an experiment which involved adding potassium sulfate powder to water. They added one teaspoon of potassium sulfate to the water and stirred it, and all the powder dissolved. They continued to do this until, after the fourth teaspoon, no more potassium sulfate would dissolve.
As more potassium sulfate dissolves in the water, the mixture becomes
a. more concentrated.
b. less concentrated.
c. dilute.
d. more cloudy.
Answer:
less concentrated
Explanation:
because it will get dissociated into more ions
Which model uses nuclear fusion Thomason model or the Bohr model (it’s the second bullet point)
Answer:
Aye bro you from discovery too
Explanation:
Kendrick goes to his neighborhood gym to exercise. The process of cellular respiration makes it possible for him to run on the treadmill and to lift weights. What do Kendrick's cells do during cellular respiration?
His cells convert kinetic energy into chemical energy.
His cells use oxygen to break down food molecules to release energy.
His cells absorb light energy through the chlorophyll in their chloroplasts.
His cells combine water and carbon dioxide to produce oxygen and glucose.
Answer: His cells use oxygen to break down food molecules to release energy
Explanation:
Answer:B
Explanation:
how many electrons does the atom have
Answer:
8
Explanation:
True or False: The frog's eyes help it see in all directions. False True
False, frogs cannot see in all directions.
Would you expect hydrogen chloride to be a gas , liquid ,or a solid at room temp and pressure ?
Answer:
I think they are gases
Explanation:
yes, I think they are gases, but I am not sure.
what type of orbital would the electrons in a tungsten atom have
Answer:
It would have 74 valence electrons
The reaction of iron ore with carbon follows the equation: 2 Fe2O3 + 3 C 4 Fe + 3 CO2.
How many grams of Fe can be produced from a mixture of 200. g of Fe2O3 and 300. g of C?
In the above problem, which reactant is limiting and which is in excess?
Answer:
The person writes a coefficient of 2 in front of Fe2O3 but then writes a 4 for the number of iron (Fe) atoms. Explain this difference.
Explanation:
The iron oxide Fe₂O₃ is the limiting reagent while carbon (C) is the excess in the given reaction.
What is the limiting reagent?A limiting reagent can be described as a reactant that is completely exhausted from the reaction mixture at the completion of a reaction and is also named a limiting reactant.
When reactants in the chemical reaction are not taken in stoichiometric quantities, the limiting reactant will determine the maximum amount of product that can be formed in a chemical reaction from the reactants.
Given, a balanced chemical equation of the reaction between iron oxide and carbon is:
[tex]2 Fe_2O_3 + 3 C\longrightarrow 4 Fe + 3 CO_2[/tex]
Given, the amount of the iron oxide = 200 g
The molecular mass of the iron oxide = 159.69 g/mol
The number of moles of iron oxide = 200/159.69 = 1.252
Given the mass of the carbon, = 300 g
The number of moles of carbon = 300/12 = 25
If 2 moles of iron oxide react with carbon moles = 3
1.252 moles of Fe₂O₃ will react with carbon = (3/2) × 1.252 = 1.878 mol
Therefore, Fe₂O₃ is the limiting reactant and carbon is the excess reactant.
Learn more about limiting reagents, here:
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which state of matter is more dense?
solids have more dens than any type of matter and I am sure btw
Answer:
Gas - Liquid - SolidExplanation:
If you are asking which state of matter is more dense of which, then this is the order.
- Liquid is more dense than Gas
- Solid is more dense than Liquid
- Gas is less dense than Air
Just to let you know, Solid is the most dense of them all, making Gas the least dense of the three.
Hope this helps! ^^
Which statement best describes scientific laws? A) Scientific laws are scientists' opinions of why events occur. B) Scientific laws are facts that describe observed reoccurring natural events. C)Scientific laws explain why natural events occur. D) Scientific laws were theories that have been proven to be true.
Answer:
Option B and D seem to be correct
Explanation:
As a scientific law is a statement which is bases on repeated experimental observations that describes some aspects of nature and also they are were theories that have been proven to be true as a theory become a law when the experiment agree with the theory and no contrary opinions so according to my studies , B and D options are seems to be correct.
Select all that apply.
How would you compare Venus's rotation to Earth's rotation?
Venus's rotation is backward compared to Earth's.
Venus's rotation is the opposite compared to Earth's.
Venus's rotation is retrograde compared to Earth's.
Venus's rotation is the same compared to Earth's.
Answer:
Venus's rotation is retrograde compared to Earth's.
Explanation:
Firstly its axis of rotation is inclined at 177.36 degrees (compared to 23.5 degrees on Earth). This means that Venus rotates in a retrograde direction from east to west, making the Sun rise in the west and set in the east. Further to this the rotation is very slow: a sidereal day on Venus lasts 243 Earth days.
Solar energy does not warm Earth’s surface evenly. For example, during the day, land areas warm up faster than nearby bodies of water. How does this uneven warming affect the movement of air over land and water?
Answer:
Land and sea breeze
Explanation:
This uneven warming of the land during the day results in the phenomenon called land and sea breeze.
During the day, the land heats up faster than the nearby ocean. Ocean is made up of water with a high specific heat capacity. This derives pressurized air near the surface of the land to the ocean. At night, the ocean does not easily lose heat after the land has lost its own. Pressurized air moves from the ocean to the land. This causes the warming of the land during the night.What is an organelle?
A. the basic building block of living things; the smallest piece of every organism that has all of the characteristics of a living
thing and can perform all life functions
B. one small part in or around a cell that has a very specialized job or function
C. structure, such as a heart or a leaf, made up of different types of tissues that all work together.
D. the smallest unit of an element that can be considered that element; they make up all matter
Answer:
A
Explanation:
The basic building block of living things; the smallest piece of every organism that has all of the characteristics of a living thing and can perform all life functions, An organelle is a subcellular structure that has one or more specific jobs to perform in the cell, much like an organ does in the body.
What is the mass in grams of 14.2 liters of sulfur dioxide gas at STP?
Answer:
Mass = 40.4 g
Explanation:
Given data:
Mass in gram = ?
Volume of SO₂ = 14.2 L
Temperature = standard = 273 K
Pressure = standard = 1 atm
Solution:
The given problem will be solve by using general gas equation,
PV = nRT
P= Pressure
V = volume
n = number of moles
R = general gas constant = 0.0821 atm.L/ mol.K
T = temperature in kelvin
1 atm × 14.2 L = n × 0.0821 atm.L/ mol.K × 273 K
14.2 atm.L = n × 22.41 atm.L/ mol
n = 14.2 atm.L/22.41 atm.L/ mol
n = 0.63 mol
Mass of sulfur dioxide:
Mass = number of moles × molar mass
Mass = 0.63 mol × 64.1 g/mol
Mass = 40.4 g
Would you rather get tips or a commission for your wages? Why?
Answer:
commission
Explanation:
Employers benefit from paying a commission to their employees because it means that they only pay the employee if there is a sale. ... It also improves the cash flows of the business because it means that employees are only paid when money is coming in from a sale.
If i were a maneger I would love commision For the reason that is stated above, but if I was just an employe I would rather work from tips.
Explain why you can not use a physical reaction to separate elements that are chemically bonded together
What does it mean for a system to be in dynamic equilibrium?
Answer:
a state of balance between continuing processes.
Explanation:
Dynamic equilibrium only occurs in reversible reactions, and it's when the rate of the forward reaction is equal to the rate of the reverse reaction.
I will give 10 points
Answer:
platlets
Explanation:
hope it helps.......
The amount of kinetic energy an object has depends on which feature of the object?
Answer:
I think it is A
Explanation:
Because if you think about is Kinetic energy is motion
so i think it is
Its motion
As you move from left to right across the second period of the periodic table
A. Ionization energy increases
B. Atomic mass decreases
C. Electronegativity decreases
D. Atomic radii increase
Answer:
A. ionizing energy increases
A tabular form in which the chemical elements are positioned according to the chemical and physical attributes is called the periodic table. The horizontal rows from left to right is referred as periods in the table.
The correct option is:
Option A. Ionization energy increases
This can be explained as:
The ionization energy raises from left to right because of valence shell resilience.The nuclear charge on the atom expands and protons in the nucleus lure the electrons more strongly.Therefore due to the high proton number, the ionization increases across the period.
To learn more about ionization energy follow the link:
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How many grams of barium sulfate are produced if 125 mL of .050 M sodium sulfate are reacted with excess barium nitrate in the following reaction?
Ba(NO3)2 + Na2SO4 = BaSO4 + NaNO3
Answer:
2.79g
Explanation:
PLEASE HELP WILL mark brainliest
Answer:
BRUH ARE YOU IN FIRST GRADE
Explanation:
what is the name for C3Cl8 and is it a covalent or polar covalent bond?
Answer:
Propane, octachloro- | C3Cl8 - PubChem
The name of C3Cl8 is octachloropropane. It is a covalent bond.
What are covalent bonds ?Covalent bonds are formed when two atoms share electrons. In the case of octachloropropane, the carbon atoms share electrons with the chlorine atoms. The electrons are shared unequally, so the bond is polar covalent.
The name octachloropropane is derived from the Greek words "octo" (eight) and "chloro" (chlorine). The prefix "octa" refers to the number of chlorine atoms in the molecule. The suffix "propane" refers to the three carbon atoms in the molecule.
Find out more on covalent bonds at https://brainly.com/question/3447218
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Use the periodic table to help you answer this question.
Give the full electron configuration for aluminum.
Answer:
the answer is 1s22s22p63s23p1
