Answer:
-ite --> Anionite
Explanation:
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Atoms in Group 18(8A) are inert (chemically unreactive) because
A
they combined to form molecules.
B
they have no valence electrons.
С
they have filled inner energy levels.
D
they have a full valence shell.
Answer: They combined to form molecules.
Explanation:
That statement that describes atoms in Group 18(8A) are inert is "they have a full valence shell."
What is chemically inert?A substance that is not chemically reactive is referred to as chemically inert.
When elements react, their atoms lose, gain, or share electrons to complete their outer shells. Noble gas atoms already have entire outer shells, therefore they don't inclined to lose, gain, or share electrons. This is why noble gases are chemically inert and do not participate in reactions.
When atoms bond, they try to form an octet by transferring or sharing valence electrons in the case of ionic bonds and covalent bonds, respectively. There is no incentive for group 18 atoms to bond because they already have an octet of valence electrons.
As a result, the noble gases belong to the periodic table's group 18. They are nonmetal elements with a full shell of valence electrons that are chemically inert, colourless, and odourless. We can see that helium (atomic number 2) has a full shell of two s electrons if we look at the electron configurations.
Hence the correct option is D.
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Which one of the following is not a property of a base?
A. Feels slippery
B. Reacts with limestone to produce carbon dioxide
C. Reacts with litmus paper and turns it blue
D. Tastes bitter
Answer:
option B is correct
Explanation:
1.5 mol of the complex substance carbon dioxide (CO2) is just a few oxygen atoms:
Answer:
9.03 x 10²³atoms
Explanation:
Given parameters:
Number of moles of CO₂ = 1.5mol
Unknown:
Number of atoms = ?
Solution:
In a mole of a substance, we have the Avogadro's number of particles which is 6.02 x 10²³atoms.
Using this number, we can determine the amount of atoms in any substance.
If;
1 mole of CO₂ contains 6.02 x 10²³ atoms;
1.5mole of CO₂ will contain 1.5 x 6.02 x 10²³ atoms
= 9.03 x 10²³atoms
Describe the relationship between the solubility rate of a solid and temperature.
Answer:
hope you like
Explanation:
the solubility rate of a solid is directly proportional to the temperature. if the temperature is high the solubility will also increase
A 800 kg car zooms away from a red light with an acceleration of 7.6 m/s2. What is the
average net force in Newtons that the car experiences?
Answer:
Fnet = 13920 Newtons
Explanation:
Net force can be defined as the vector sum of all the forces acting on a body or an object i.e the sum of all forces acting simultaneously on a body or an object.
Mathematically, net force is given by the formula;
[tex] Fnet = Fapp + Fg[/tex]
Where;
Fnet is the net force Fapp is the applied forceFg is the force due to gravitationGiven the following data;
Mass, m = 800 kg
Acceleration, a = 7.6m/s²
To find the applied force;
[tex] Fapp = ma[/tex]
Substituting into the equation, we have;
[tex] Fapp = 800 * 7.6[/tex]
Fapp = 6080N
To find the gravitational force;
We know that acceleration due to gravity, g = 9.8m/s²
[tex] Fg = mg[/tex]
Substituting into the equation;
[tex] Fg = 800 * 9.8[/tex]
Fg = 7840N
To find the net force;
[tex] Fnet = Fapp + Fg[/tex]
Substituting into the equation, we have;
[tex] Fnet = 6080N + 7840N[/tex]
Fnet = 13920 Newton.
Therefore, the net force experienced is 13920 Newton.
WHO EVER ANSWERS THESE TWO QUESTIONS AS SIMPLE AS THEY CAN GETS 100 POINTS AND BRAINLY. DONT GO ON GOOGLE I ALREADY CHECKED JUST ANSWER IN YOUR OWN WORDS.
How is the atomic mass calculated for elements on the periodic table
How are orbit and electron cloud models of the atom different.
Answer:
The electron cloud keeps the surronds the atom like abubble and the orbit is what the electrons go around
Explanation:
Sarah used 2.5 cups of cheese in a dish that serves 10 people. Arun used 1.6 cups of cheese in a dish that serves 8 people. How much more cheese is in one serving of Sarah's dish? *
Answer:
0.05
Explanation:
We find the rate of the chess
Sarah is 2.5/10
Arun is 1.6/8
We will get
0.25 for Sarah
0.20 for Arun
We subtract the two
0.25 - 0.20, we then get 0.05
Sarah has 0.05 more cheese in one serving than Arun
Use coefficients to increase the atoms on each side. Check to make sure you have the same number of each type of atom on each side. Count the atoms on each side. Identify the atoms on each side.
Answer:
Balancing an equation
Explanation:
These steps describes the processes which are involved in balancing a chemical equation.
In balancing the a chemical equation, the law of conservation of mass is strictly adhered to. It suggests that in a chemical reaction, atoms are neither created nor destroyed, but they combine with one another.
Therefore, the number atoms at start and end of a reaction must be the same. You can use coefficients to increase the atoms on each side. Also, check to makes sure the number of atoms on both sides are the same. Count the atoms on each side of the expression.Answer:
balancing
Explanation:
Imagine that a cold snap hits Florida in February. Would it be cooler along the coast or further inland? Plz plz plz anwswr quick
Along the coast, its always colder near water
Where is the majority of Helium in the United States obtained from?
Aqueous solutions of lithium bromide and silver nitrate are mixed.
Precipitate:
Chemical Equation:
Complete Ionic Equation:
Net ionic Equation:
Answer:
Chemical equation: AgNo3 + LiBr = AgBr + LiNO3
Explanation:
Answer:
Chemical equation: AgNO3 + LiBr -> AgBr + LiNO3
Complete Ionic equation: Ag + NO3 + Li + Br -> AgBr + Li + NO3
Net Ionic equation: Ag + Br -> AgBr
Explanation:
You start out with the chemical equation. We know that to get to the complete ionic equation we have to follow the solubility guidelines for common ionic compounds. In there, we can see that NO3 is soluble with no exceptions, which means every NO3 in this equation should be separated from the compound (this brings us to Ag + NO3 + LiBr -> AgBr + Li + NO3). Next we should separate Br, but be careufl because in the solubility guidelines it states that an exception to this being soluble would be if Br was next to Ag, Hg, and Pb. Since our second Br is next to an Ag, our equation will look like Ag + NO3 + Li + Br -> AgBr + Li + NO3. To find the net ionic equation all we're going to need to find are the substances that cancel each other out on both sides of the equation (aka the spectator ions). Our spectator ions in this case are Li and NO3. After we cancel those out, our net ionic equation is Ag + Br -> AgBr.
What occurred during Rutherford’s experiment that led to his discovery of the nucleus?
Answer:
Thomson's plum pudding model of the atom had negatively-charged electrons embedded within a positively-charged "soup." Rutherford's gold foil experiment showed that the atom is mostly empty space with a tiny, dense, positively-charged nucleus. Based on these results, Rutherford proposed the nuclear model of the atom.
Explanation:
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The pavement on a hot day has transformed light energy from______ to heat energy.
1. Radiation
2. Conduction
3. Convection
4.All of the above
Answer:
4. all the above
Explanation:
It's all of the above because Thermal energy has all three. An example is like a pot of water on the stove boiling. Radiation is coming off of the eye of the stove. Conduction occurs when heat transfers from hot to cold ( like the handle of the pot). Convection occurs in the boiling of the water by rotating causing the heat to rise.
A neighbor wants to use his backyard garden to
conduct an investigation of how tomato plants use specific amounts of
carbon dioxide and water to grow at a certain rate. Is this a good idea?
Explain.
Answer:
No, it is not
Explanation:
The reason for this answer is below
To conduct an experiment/investigation that involves the use of specific amounts of carbon dioxide and water by plants, one needs a controlled environment where the amount of carbon dioxide and water made available to the plant can be monitored and regulated as desired by the experimental design. The neighbor's backyard cannot provide this controlled environment and thus it is a bad idea.
Note that the neighbor's backyard cannot provide the controlled environment because the amount of carbon dioxide the plants will be exposed to there cannot be regulated as this is the carbon dioxide from the atmosphere and also the plants could get additional water from midnight dew which cannot be regulated also.
It is a good idea to use backyard garden to conduct an investigation of
how tomato plants use specific amounts of carbon dioxide and water to
grow at a certain rate.
To obtain an accurate result, experiments should be done in an
environment which is similar to those in which plants are exposed to during
photosynthetic reactions.
The use of the backyard garden will have different factors such as
atmospheric pressure, sunlight, precipitation which the plants are exposed to
in its normal environment which is why it is a good idea.
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can Someone help me with this
Answer:
1. Mg²⁺ 2. Cl⁻ 3. PO₄³⁻
Explanation:
Answer:
1. Mg²⁺
2. Cl⁻
3. PO₄³⁻
Explanation:
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A chemist added hydrochloric acid to a sample of baking soda in a beaker. Immediately, the mixture of the two chemicals began to fizz and bubble. Which of the following observations about the fizzing mixture provides evidence of a chemical
reaction?
A. The temperature of the beaker did not change.
B. A substance escaped from the beaker in the form of a gas.
C. Some of the baking soda remained in the bottom of the beaker.
D. Most of the baking soda appeared to dissolve in the acid.
Answer: B
Explanation:
The observations about the fizzing mixture provide evidence of a chemical reaction is A substance escaped from the beaker in the form of a gas. The correct option is B.
What is a chemical reaction?A chemical reaction is a process of forming a compound from two substances. The substance that reacts to create a compound is called a reactant, and the compound that is formed after the reaction is called a product.
In a beaker, a chemist mixed hydrochloric acid with a sample of baking soda. The two chemicals together instantly started to bubble and fizz. Fizz is the bubbles that are made in the reaction, they are realized in the environment. Thus, they have escaped from the beaker.
Thus, the correct option is B. A substance escaped from the beaker in the form of a gas.
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What is the composition of sucrose?
Answer:
Sucrose is made up of one glucose and one fructose molecule, and are joined together by a glycosidic bond
Explanation:
what is the name for Sn(NO3)4
Answer:
Tin (IV) Nitrate
General Formulas and Concepts:
Chem
Reading a Periodic TableIdentifying Polyatomic IonsWriting chemical compoundsDetermining chargesExplanation:
Sn has 2 general forms in charges: Sn²⁺ and Sn⁴⁺ as it is a Post-Transition metal.
Nitrate, NO₃⁻, has a 1 minus charge.
To balance out these charges from the given compound, we know that there are going to be 4 nitrates to balance out a charge. +4 and -4 equals 0, so the charge of Sn would be +4.
Therefore, our compound name would be Metal (Oxidation Number) polyatomic ion:
Tin (IV) Nitrate
i need help on this its due Monday
The properties of the elements can be determined from their electron configuration
Further explanationMg ⇒electron configuration :[Ne] 3s²outer electron : 2 (3s²)
lose(2 electron)
charge : +2
cation (positive)
symbol : Mg²⁺
Br⇒electron configuration : [Ar] 4s²3d¹⁰4p⁵outer electron : 7 (4s²4p⁵)
gain ( 1 electron)
charge : -1
anion (negative)
symbol : Br⁻
Helium⇒electron configuration : 1s²
outer electron : 2 (1s²)
stabil(no gain/no lose)
charge : 0
neutral
symbol : He
Nitrogen ⇒electron configuration : [He] 2s²2p³outer electron : 5 ( 2s²2p³)
gain(3 electron)
charge : -3
anion
symbol : N³⁻
How do sediments become
sedimentary rock?
Answer:
Sedimentary rocks are formed when sediment is deposited out of air, ice, wind, gravity, or water flows carrying the particles in suspension. This sediment is often formed when weathering and erosion break down a rock into loose material in a source area.
PLEASE HELP!!! Which action will increase the gravitational force between two objects?
How many moles are in 2.8 g of Mg?
Answer:
2.8 mg ≈ 0.12 mol
advantages of soapy detergents
Answer:
Soapy detergents clean more effectively than normal soap. Hard water (water with high mineral content). Hard water can be used with soapy detergents but soap cannot be used with hard water. When soapy detergent and hard water are combined it makes a protective film that is really resistant to rinsing.
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PLEASE HELP!!!!! I'LL YOU BRAINIEST!!!!
Answer:
I believe 11 is B 12 is C 13 is B and 14 is C
8. What is one sign that the water in your house is "hard?"
Answer:
More than soap sc um, hard-to-remove scale or film is often due to hard water. Also, take a good look at your faucets or fixtures.
Explanation:
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a/n_________shows the number of valence electrons in an
(n)
tom in pictorial fashion.
A electron dot diagram
B periodic table C Graph
Answer:
Periodic table
Explanation:
A gas originally at a pressure of 791 mm Hg and a volume of 500.0 mL is allowed to
expand to 1.00 Liter. What is the new pressure of the gas? (Boyle)
Answer:
The new pressure of the gas is 395.5mmHg
Explanation:
The pressure of a gas is inversely proportional to its concentration (Boyle's law). The equation that explain this law is:
P₁V₁ = P₂V₂
Where P is pressure
And V is volume of 1, initial state and 2, final state of the gas
Initial state:
791mmHg; 0.500L.
Final state:
1.00L
Replacing:
791mmHg* 0.500L = P₂*1.00L
P₂ = 395.5mmHg
The new pressure of the gas is 395.5mmHgFor a material to float on the surface of water, the material must have a density
less than that of water (1.0 g/ml) and must not react with the water or dissolve in
it. A spherical ball has a radius of 0.50 cm and weighs 2.0 g. Will this ball float or
sink when placed in water? (Note: Volume of a sphere = 4/3(pi)(r^3)
Answer:
Explanation:
volume of spherical ball = 4/3 x π R³
= 4 x 3.14 x .5³ / 3
= .5233 cm³ or ml.
mass = 2 g
density = mass / volume
= 2 / .5233
= 3.8 g / ml .
So its density is more than that of water , hence it will sink into water .
Which of the following statements is true about cells?
A. All cells look the same.
B. All cells perform the same function.
O C. All cells perform specialized functions.
O D. All cells are prokaryotic.
Answer:
Explanation: i think it is C if i'am wrong i'am sorry
SOMEONE PLEASE ANSWER THIS IM TIMED ON MY TEST
When petrol is burned inside a car engine it reacts with oxygen from the air. the products are carbon dioxide and water. carbon dioxide is thought to contribute to climate change so some cars now do not use petrol as the fuel. they use hydrogen instead, when hydrogen is burned in oxygen no carbon dioxide is produced. just water.
write a word equation for both reactions;
use " - - >" for the arrow in your equations.
PLS ANSWER ILL MARK BRAINLIST PLEASE
it provides carbon dioxide and rhen it goes through the car and gives the gas oxygen