what are the names for the following compounds:NACI, KCI, CUF, FES, CA(OHS), CACO
Answers
The names of the following compounds are -
NaCl = Sodium chloride
KCl = Potassium Chloride
CuF = Copper fluoride
FeS = Iron sulfide
Ca(OH)₂ = Calcium Hydroxide
CaCO₃ = Calcium Carbonate
All compounds, whether ionic or covalent, must be electrically neutral. Consequently, the positive and negative charges in a formula unit must exactly cancel each other.
The name of a binary compound containing monatomic ions consists of the name of the cation (the name of the metal) followed by the name of the anion (the name of the nonmetallic element with its ending replaced by the suffix –ide).
As with ionic compounds, the system for naming covalent compounds enables chemists to write the molecular formula from the name and vice versa.
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Related Questions
1.
Sabrina was asked by a classmate why she would place hydrogen in the first column of the periodic tab le. Which of the following reasons could she give as a response?
1. Hydrogen combines with chlorine in the same atomic ratio as sodium.
II. Hydrogen is a gas at room temperature.
III. Hydrogen forms diatomic molecules.
А A
I and II
B. Oll and III
COI only
D. Ill only
Answers
Answer:
The correct option is;
C. I only
Explanation:
Given that in a chemical reaction, the number of valence electrons in the outermost shell of an atom determines the ratio in which the atom combines with other atoms to have the stable 8 (octet) valence electrons in their outermost shell, we have that atoms in a group combines with atoms in other groups, where possible, in the same ratio.
Therefore, sodium, which is in the first column (group I) combines with atoms of elements in other groups, in the same ratio as atoms of the other elements of the column 1
Since hydrogen combines with chlorine in the same ratio as sodium which is from the first column, hydrogen is also an element from the first column.
when two or more substances have been dissolved, it is called a: a. solvent b. solution c. solute d. none of the above.
Answers
When two or more substances are mixed together and appear as a homogeneous mixture, it is called a solution. A solution is composed of two parts: the solvent and the solute. The solvent is the substance in which the solute is dissolved, and it is typically the component of the solution present in the greatest amount. The solute is the substance that is dissolved in the solvent and is typically present in a smaller amount.
For example, when sugar is dissolved in water, water is the solvent, and sugar is the solute. The sugar molecules are dispersed throughout the water molecules, forming a homogeneous solution. Similarly, when salt is dissolved in water, water is the solvent, and salt is the solute.
Solutions can be made of solids, liquids, or gases, and they can be formed by dissolving a solute in a solvent through processes such as stirring, heating, or shaking. The concentration of a solution can be expressed in various units, such as molarity, molality, percent by mass, or percent by volume.
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What does the molarity of a solution indicate?
A) The concentration in grams of a substance in the solution
B) The concentration in grams of the substance per gram of water
C) The concentration in moles of a substance per mole of water
D) The concentration in moles of a substance in the solution
Answers
The molarity of a solution indicates the concentration in moles of a substance in the solution (Option D)
What is molarity?Molarity is defined as the mole of solute per unit litre of solution. Mathematically, it can be expressed as:
Molarity = mole / Volume
For example: What is the molarity of a solution containing 75 g of KNO₃ in 0.35 L of solution.
How to determine the mole of KNO₃Mass of KNO₃ = 75 gMolar mass of KNO₃ = 39 + 14 + (3×16) = 101 g/mol Mole of KNO₃ =?Mole = mass / molar mass
Mole of KNO₃ = 75 / 101
Mole of KNO₃ = 0.743 mole
How to determine the molarity Mole of KNO₃ = 0.743 mole Volume = 0.35 L Molarity =?Molarity = mole / Volume
Molarity = 0.743 / 0.35
Molarity = 2.12 mol/L
From the above, we can see that the molarity indicates the concentration in mole of the substance in the solution.
Thus, the correct answer to the question is:
The concentration in moles of a substance in the solution (Option D)
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interview at least three farmers in your community. ask them how they prepare their field for planting vegetable crops.And the common tools, implements and equipment they used in preparing for planting
Answers
Answer:
I think they use water,shovel,and rake.
Explanation:I was in ag in 8th grade and first we used a rake and raked all the stuff up. Then we waterd the dirt. Then dug a hole and planted the plant and waterd it after.
I hoped this help have a nice day! Comment if you need more help.
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a 100.0 ml solution of naoh reaches the equivalence point when 30.22 ml of a 0.0750 m solution of hcl is added from the burette.
Answers
The answer is 0.0026.
Solution:
(V₁) Volume of NaOH = 100 mL
(V₂) Volume of HCl = 30.22 mL
(M₂) molarity of HC = 0.0750 m
(m₁) molarity of NaOH =
By using relation
M₁V₁ = M₂V₂
M₁ = M₂ V₂/V₁
M₁ = 0.0750ML*30.22mL/100 mL
M₁ = 0.0226
Now
molarity of NaOH = mole of NaOH/Volume of NaOH (in L)
mole of NaOH = molarity x volume
= 0.0226 mol/L X 100 X 10⁻³ L
= 0.0026 mol So the mole of NaOH is 0.0026.
When titrating NaOH with HCl using methyl orange as an indicator the endpoint color changes from yellow to red, so add HCl to the burette. This is just for ease of calculation. Put the hydrochloric acid in the burette and the soda solution in the Erlenmeyer flask. Methyl orange is used as an indicator.
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How many grams of bicarbonate will produce 40. Ml of co2 gas?
Answers
The reaction equation must first be put down and the stiochiometry is used to calculate the mass of the bicarbonate produced as 0.11 g.
What is a reaction?A reaction refers to the transformation of reactants into products. We have the equation of this reaction as;
CO2 + H2O ---->H2CO3
If 1 mole of CO2 gas occupies 22400mL
x moles of CO2 occupies 40 mL
x = 0.0018 moles
If 1 mole of CO2 yields 1 mole of bicarbonate
0.0018 moles yields 0.0018 moles of bicarbonate
Mass of bicarbonate = 0.0018 moles * 61 g/mol = 0.11 g
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Which of the following statements explains the difference between a lease and a loan?
a. At the end of a loan the car belongs to you, but at the end of a lease, the car still belongs to the
lease company
b. At the end of a loan, the car still belongs to the lease company, but at the end of a lease the car
belongs to you.
c. A loan requires a large down payment at the beginning while a lease does not.
d. A lease requires a large down payment at the beginning while a loan does not.
Please select the best answer from the choices provided
Answers
Answer:
letter A is the answer
Explanation:
At the end of a loan the car belongs to you, but at the end of a lease, the car still belongs to the lease company.
Consider a 0. 238 m aqueous solution of sodium hydroxide, naoh. How many grams of naoh are dissolved in 23. 46 ml?.
Answers
Approximately 0.22328 grams of NaOH are dissolved in 23.46 mL of the 0.238 M aqueous solution.
The number of grams of NaOH dissolved in 23.46 mL of a 0.238 M aqueous solution, we can use the formula:
moles of solute = concentration (M) × volume (L)
First, let's convert the given volume from milliliters to liters:
23.46 mL ÷ 1000 mL/L = 0.02346 L
Next, substitute the values into the formula:
moles of NaOH = 0.238 M × 0.02346 L
Now, multiply the concentration by the volume:
moles of NaOH = 0.238 × 0.02346
Calculating this gives us:
moles of NaOH ≈ 0.00558268
To convert moles to grams, we need to use the molar mass of NaOH. The molar mass of NaOH is approximately 39.997 g/mol.
Multiply the moles by the molar mass to get the mass:
grams of NaOH = 0.00558268 mol × 39.997 g/mol
Calculating this gives us:
grams of NaOH ≈ 0.22328 g
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What would happen to the pressure of a gas inside is sealed bottle if the bottle was cooled to half its original temperature?
Answers
The pressure of a gas inside is sealed bottle if the bottle was cooled to half its original temperature then the pressure would also decrease by half of its original value and the volume remains constant.
What is pressure ?The term pressure is defined as an expression of force exerted on a surface per unit area. If we applied force F on area A , then pressure
P = F / A.
The pressure of a gas inside is sealed bottle if the bottle was cooled to half its original temperature then the pressure would also decrease by half of its original value and the volume remains constant.
Thus, the pressure would also decrease by half of its original value and the volume remains constant.
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Which statement correctly describes a difference between graphene and graphite? (a) Graphene is a molecule but graphite is not. (b) Graphene is a single sheet of carbon atoms and graphite contains many, and larger, sheets of carbon atoms. (c) Graphene is an insulator but graphite is a metal. (d) Graphite is pure carbon but graphene is not. (e) The carbons are sp2 hybridized in graphene but sp3 hybridized in graphite.
Answers
The correct statement that describes a difference between graphene and graphite is:
(b) Graphene is a single sheet of carbon atoms, and graphite contains many, and larger, sheets of carbon atoms.
Graphene is a two-dimensional sheet consisting of a single layer of carbon atoms arranged in a hexagonal lattice. It is the basic structural unit of graphite.
On the other hand, graphite is composed of multiple layers of graphene stacked on top of each other.These layers can easily slide past one another due to weak interlayer forces, giving graphite its characteristic slippery feel.
Option (a) is incorrect because both graphene and graphite are composed of carbon atoms.
Option (c) is incorrect as graphene is a good conductor of electricity, while graphite is also a good conductor but not a metal.
Option (d) is incorrect because both graphene and graphite are forms of carbon.
Option (e) is incorrect because both graphene and graphite have carbon atoms that are sp2 hybridized.
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How many manganese atoms are in each formula unit of potassium permanganate?
Answers
When delivering a presentation, pay attention to _____ and _____.
posture and eye contact
volume and the introduction
content and source citations
believability and confidence
Answers
Answer:
I think the last one
Explanation:
The reason for that is because when you go up to present something you always want to try to hav believability and confidence.
Answer:
believability and confidence
Explanation:
From the dissolution of a gas sample, two more gases were obtained, namely 150 cm3 of N2 and 450 cm3 of H2 .What is the formula for dissolved gas.
Answers
Tyler measured the force of his grip. Which is the most likely reading?
A.
190kg
B.
190N
C.
1 lb
D.
20,000 N
E.
5 seconds
F.
18mg
Answers
Answer:
190n
Explanation:
190 190 and because it is easy to understand if you didn't understand my answer ask any man
What can be determined if only the atomic number of an atom is known?
1) the total number of neutrons
2) total number of protons
3) sum of protons and neutrons
4) sum of neutrons and electrons
Answers
Answer:
2) total number of protons
Helium has an atomic number of one, and has only one proton in its nucleus.
Oxygen has an atomic number of 8 and an atomic mass of 16. From this we know that the atomic number measures the number of protons, and the atomic mass is the overal sum of protons and neutrons.
Answer:
2.) The total number of protons
Explanation:
The definition of atomic number is the total number of protons in the nucleus of an atom.
Hope I helped
For each of these pure substances, list the atoms that are in one molecule
of the substance. Say whether it is an element or a compound.
e) Na
a) H₂O
b)CO₂
c) H₂
d) C₂H₁2O6
Answers
A)compound
B) compound
C) element
D)compound
HELPPPPPPPPP!!!!....... Which statement best describes how chemical equations demonstrate conservation of mass?
A.
The number of reactants is the same as the number of products.
B.
The compounds are the same on each side of the reaction.
C.
The number of atoms of each element is the same on each side of the equation.
D.
The state of matter is the same on each side of the equation.Which details from the passage are emphasized in both the text and images?
Answers
Answer:
A. The mass of reactants is the same as the mass of products
SnO2 (s) + 2 H2 (g) → Sn (s) + 2 H2O (l)
What mass of water is produced when 57.6g of SnO2 are consumed in the reaction above?
Answers
Answer:
SnO2+2H2 - Sn +2H2O
50g of tin plus 32g of oxygen-36g of H2O
82g- 36g
57.6g- x
cross multiply
82xg= 2073.6g
xg = 2073.6/82
Xg= 25.28g
Therefore the mass of water consumed in the reaction is 25.28g
What is the volume, in liters, of 1.4 moles of CO2 gas at STP?
Answers
Answer:
22.4 L.
Explanation:
what is the net ionic equation of:
Ca(OH)2(aq) + FeCl3(aq) → Fe(OH)3___+CaCl₂
Answers
Answer:
2OH-(aq) + Fe3+(aq) → Fe(OH)3(s)
Explanation:
The balanced molecular equation for the reaction between calcium hydroxide (Ca(OH)2) and iron(III) chloride (FeCl3) is:
Ca(OH)2(aq) + FeCl3(aq) → Fe(OH)3(s) + CaCl2(aq)
To write the net ionic equation, we first need to break down the soluble reactants and products into their respective ions:
Ca(OH)2(aq) → Ca2+(aq) + 2OH-(aq)
FeCl3(aq) → Fe3+(aq) + 3Cl-(aq)
Fe(OH)3(s) → Fe3+(aq) + 3OH-(aq)
CaCl2(aq) → Ca2+(aq) + 2Cl-(aq)
Next, we need to identify the spectator ions, which are ions that appear on both sides of the equation and do not participate in the reaction. In this case, the spectator ions are Ca2+ and 2Cl-.
Therefore, the net ionic equation is:
2OH-(aq) + Fe3+(aq) → Fe(OH)3(s)
This equation shows the actual chemical change that occurs during the reaction, with only the ions and molecules that participate in the reaction shown.
what causes a mountains to change in height or location
Answers
Movement of tectonic plates, erosion, earthquakes, and landslides, etc causes a mountains to change in height or location.
Some mountains might change due to the volcanic activities. Erosion occurs due to the rain and wind and primary reason for landslides to happen is flooding. When earth's crust presses against each other, the crust collects up to form the mountains. When erosion occurs, it erodes down the mountains and decreases their height making them shorter and less steep.The height and location of mountains change due to the movement of tectonic plates. When these tectonic plates shows movement, the height of mountains gradually increases and these plates produces high elevations resulting in the expansion of mountains. As much as the plates collide with each other, mountains will get taller and taller.The tectonic plates continuously moves slowly, but due to the friction, they stuck at the edge. These plates move away from each other and cause mild shocks of earthquake, or they move towards each other resulting in collision. This collision is very destructive. It brings down a mountain, resulting in gradual decrease of height of mountains.To learn more about mountains,
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HELLLLPPPPPPP
Which of the following is the correct term for the chemical reaction that forms polymers?
A. Displacement
B. Oxidation
C. Polymerization
D. Monomerization
Answers
below shows Eddie fishing.
Using the picture, which of the following is the best example of mechanical energy?
Group of answer choices
the pole, line, and hook used for fishing
Eddie reeling in a fish that he has caught
Eddie standing on the side of the river
the Sun shining and warming the water
Answers
Answer:
B is correct
Explanation:
pls Brainliest
Answer:
Eddie reeling in a fish that he has caught
Explanation:
a container with a volume of 2.5L contains air at a pressure of 0.5 atm. if the volume is reduced to 1.5L at constant temperature, what will be the resulting pressure of the air inside
Answers
Answer:
Final pressure of the air inside is 0.83atm
Explanation:
Boyle's law is the gas law that relates the change in volume when pressure change at constant temperature and vice versa. The equation is:
P₁V₁ = P₂V₂
Where P is pressure and V is volume of 1, initial state and 2, final state of the gas
Replacing:
P₁ = 0.5atm
V₁ = 2.5L
P₂ = ?
V₂ = 1.5L
P₁V₁ = P₂V₂
0.5atm*2.5L = P₂*1.5L
0.83atm = P₂
Final pressure of the air inside is 0.83atm
how does the hill Height affect the speed in there for the energy of a roller coaster
Answers
Answer:
the higher the hill the faster it'll be when coming down it. if going up the hill then the speed will be slower
Explanation:
Answer:
There are 2 types of energy - kinetic and potential. Potential energy is built up, while kinetic energy is released. As the roller coaster goes higher, it pulls further away from gravity. As it goes down, it accelerates (Gains speed). The KINETIC ENERGY in the roller coaster grows as it goes down.
Your question is kind of confusing but I think I answered it correctly based on what you asked.
Ca(OH)2 + 2HCl → CaCl2 + 2H2O Which of the following is true about the equation
Answers
Answer:
This equation is a double reaction
Explanation:
I hope this is the answer
Answer:
ca(OH)2 is the base and CaCI2 is the salt
Explanation:
__________ is often a limiting nutrient for many organisms, especially plants. A. Carbon B. Nitrogen C. Sulfur D. Phosphorus
Answers
Phosphorus is often the limiting nutrient, or nutrient that is most scarce and thus limits growth, in aquatic ecosystems. When nitrogen and phosphorus from fertilizer are carried in runoff to lakes and oceans, they can cause eutrophication, the overgrowth of algae.
According to one acid-base theory a molecule acts as an acid when the molecule
Answers
3. Which half-reaction equation represents reduction?
Answers
Answer:
Which half-reaction equation represents reduction?
answer is 2
Answer:
B CU2+ +2e- -> Cu
Explanation:
reduction means something opposite of the word
reduction means an electron is GAINED in the part before the arrow
it's the " + 2e- " part of the equation before the arrow or "->" part
oxidation is the LOSING of an electron so it would show up to the right of arrow or "->" of the equation as "+2e-"
both reduction & oxidation reactions are called "redox"
in a battery
anode is oxidation
cathode is reduction
anode is positive
cathode is negative electrode
decomposing compounds is electrolysis.
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Which is the formula mass of Na2S04?
Answers
Answer:
The formula mass of Na2S04 is 142.04 g/mol
Answer:
142.04 g/mol
Explanation:
the formula Na2SO4 means:two moles sodium (45.98g), one mile sulfur (32.06g), and four moles oxygen (64.00g) combine to form one mole of sodium surface (142.04g).