Answer:
Explanation: Catalysis is the process of increasing the rate of a chemical reaction by adding a substance known as a catalyst. Catalysts are not consumed in the reaction and remain unchanged after it.
once the ice cube melts, what happens to the liquid water that it produces?
Answer:
The ice shrinks (decreases volume) and becomes more dense. The ice density will increase from . 92g/cm^3 to that of liquid water (1g/cm^3).
Explanation:
7. What type of material transmits the most light
Answer:
transparent
Explanation:
Question 2. Which two spectra can tell us the most information about chemical composition and motion?
Answer:
The spectra can be divided into two types viz., emission and absorption spectra. The differences between them are given below. 1) The emission spectrum is obtained due to emission of radiation from the substances. The absorption spectrum is obtained when the substance absorbs the radiation.
Explanation:
13. What is a chemical equation?
Answer:
A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulae, wherein the reactant entities are given on the left-hand side and the product entities on the right-hand side.
Which one of the following is not a diatomic gasChlorineNeonNitrogenHydrogen
1. Describe What happens to a hydrogen
atom in an acid when the acid is dissolved
in water?
Answer:
The H+ atoms will become neutralized by the OH- ions in the water. This is due to the fact that when acids are dissovled in water, they give H+ ions (Hydrogen ions). When the H+ ions from the acid join with the OH- ions in the base (water), they'll become neutralized and form H₂O (Water molecule).
Assuming non-ideal behavior, a 2.0 mol sample of CO₂ in a 7.30 L container at 200.0 K has a pressure of 4.50 atm. If a = 3.59 L²･atm/mol² and b = 0.0427 L/mol for CO₂, according to the van der Waals equation what is the difference in pressure (in atm) between ideal and nonideal conditions for CO₂?
The difference between the pressure in ideal and nonideal conditions for the CO₂ gas is 0.22 atm.
The given parameters;
number of moles of the gas, n = 2 molvolume of the gas, V = 7.3 Ltemperature of the gas, T = 200 Kpressure of the ideal gas, P₁ = 4.5 atmconstant, a = 3.59 L²atm/mol²constant, b = 0.0427 L/molThe van der Waals equation is calculated as follows;
[tex](P + \frac{an^2}{V^2} )(V-nb) = nRT\\\\P = \frac{nRT}{V-nb} - \frac{an^2}{V^2} \\\\P = \frac{2\times 0.082057 \times 200}{7.3 \ -\ 2\times 0.0427} - \frac{3.59\times 2^2}{7.3^2} \\\\P = 4.281 \ atm[/tex]
The difference between the pressure in ideal and nonideal conditions for the CO₂ gas is calculated as;
[tex]\Delta P = P_{ideal} - P_{nonideal}\\\\\Delta P = 4.5 \ atm \ - \ 4.281 \ atm\\\\\Delta P = 0.22 \ atm[/tex]
Thus, the difference between the pressure in ideal and nonideal conditions for the CO₂ gas is 0.22 atm.
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What type of carbon cycling occurs when stored carbon in organisms is released when they die, and when carbon from dead organisms can be released underground in the form of coal, oil, or natural gas?
1. long-term carbon cycling
2. carbon release cycling
3. carbon storage cycling
4. short-term carbon cycling
Balancing Chemical Equation
CuCl2+H2S=CuS+HCl
Answer:
CuCi2 + H2S ⇒ CuS + 2HCi
Explanation:
In order to balance a chemical equation you need to make sure to have the same number of atoms on each side by multiplying on both sides.
CuCi2 + H2S = CuS + HCi
Cu = 1
Ci = 2
H = 2
S = 1
Product
Cu = 1
S = 1
H = 1 × 2 = 2
Ci = 1 × 2 = 2
Since all elements have a balanced amount of atoms, the equation is now balanced.
CuCi2 + H2S ⇒ CuS + 2HCi
Hope this helps.
A chemical equation is said to be balanced if the quantity of each type of atom in the reaction is the same on both the reactant and product sides. In a balanced chemical equation, the mass and the charge are both equal. Here the balanced equation is CuCl₂ + H₂S → CuS + 2HCl.
A balanced chemical equation, in which the masses of the reactants and products are equal, contains the same amount of atoms of each element on both sides of the equation. In other words, both sides of the reaction have an equal balance of mass and charge.
The chemical equation is said to be balanced if there are no inequalities. Here the balanced equation is:
CuCl₂ + H₂S → CuS + 2HCl
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What is the chemical equation for foam fight
Answer:
Hydrogen Peroxide
Explanation:
what can you mix with red Cemical with green Cemical
(answer it ill give maybe 71?)
(did i spell it right?)
Answer:
super washing soda can I mix into them
Water combines with carbon dioxide Choose one: A. only in the atmosphere. B. to produce hydrogen sulfide. C. to precipitate calcite. D. to produce slightly acidic groundwater that dissolves limestone and forms caves.
Water combines with carbon dioxide to produce slightly acidic groundwater
that dissolves limestone and forms caves.
This is because the reaction between water and carbondioxide to form
bicarbonate ions( HCO₃⁻). The bicarbonate ions dissociate into Hydrogen
atoms thereby increasing the acidity.
The acidic environment results in the formation of acidic groundwater that
dissolves limestone and forms caves.
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identify four forms of energy in the following diagram
Answer:
Chemical, electrical, thermal, & radiant
Explanation:
A battery is a device that stores chenical energy and converts it to electricity. The diagram portrays said electricity powering an incandescent light bulb, which work by using an electrical current to heat a filament until light is produced.
Answer:
1. Light energy
2. Chemical energy
3. Electrical energy
4. Mechancal energy- Potential energy
Explanation:
The electrical energy is converted into light energy to allow the bulb to glow. Batteries are a form of chemical energy ( the flow of electrons), with energy stored in the bonds of molecules contained within the battery acid. The word “stored” — meaning batteries are a form of potential energy ( energy at rest or stored for later use).
Classify each of the following as a pure substance or a mixture,
Gold is a
pure substance.
O
mixture.
Answer:
The guy above is correct. Gold is a pure substance.
The 2 forces that act on atoms are the electromagnetic force and the strong nuclear force.
The electromagnetic force affects _____
and states that _____
are attracted to protons and that ______
repel each other. This force helps explain why ________
repel each other inside the nucleus and why we _____
need to act as buffers.
Meanwhile, the strong nuclear force tries to counteract the electromagnetic force even though it has _____
range. The strong nuclear force
applies to ______
and focuses on the _____
ratio. More specifically, an atom will become unstable if it has too
many _____
because the repulsion between them will be too much for the strong nuclear force to keep them together. This means that the strong _____
nuclear force will be more effective with _____
nuclei.
Electromagnetic forces occur between electrons and protons while nuclear forces occur between neutrons and protons in the nucleus.
Electromagnetic forces are the forces that are responsible for the attraction between electrons and protons. The electrons in shells repel each other.
The existence of electromagnetic forces explain why positively charged protons repel each other in the nucleus and neutrons are needed to buffer this effect.
The electromagnetic force has a short range. The strong nuclear force applies to the nucleus and focuses on the neutron - proton ratio.
An atom is unstable if it has too many protons because their repulsive force will exceed the nuclear force that keeps them together. Nuclear force is stronger for lighter nuclei than heavier ones.
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What character of the actual elements (aluminum, silicon, oxygen) present in alumina and silica cause the stationary phase to be very polar?.
Answer:
aluminum and silicon and the electronegative character of the oxygen.
Explanation:
.
The electronegative character of alumina and silica and the electropositive character of oxygen causes the stationary phase to be very polar.
What are electronegative?Electronegativity is defined as the tendency for an atom of a given chemical element to attract shared electrons or electron density when forming a chemical bond.
Non metals are usually an electronegative elements.
Electro positivity is defined as the tendency for an element to lose the electron to form a positive ions.
It is also known as metallic character. Metals are usually an electropositive elements.
Thus, the electronegative character of alumina and silica and the electropositive character of oxygen causes the stationary phase to be very polar.
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Reaction rate factors
Not much to go by but if you could help please do
Answer:
Sorry I can't
Explanation:
In the reaction represented by the equation 2Al2O3 → 4A1 + 302, calculate the
theoretical amount in grams of oxygen, O2 produced if 11.84 grams Al2O3
decomposes?
Answer:
3.78 gm O2
Explanation:
In the reaction represented by the equation 2Al2O3 → 4A1 + 302, calculate the theoretical amount in grams of oxygen, O2 produced if 11.84 grams Al2O3 decomposes?
for every 2 moles of Al2O3, 3 mole of 02 are produced
molecular weight of Al2O3 =(2X27) + (3X32) =54+96= 150
11.84 gm Al2O3 = 11.84/150 moles =0.0789 moles
This will produce 3/2 X 0.0789 moles of O2 = 0.118 moles O2
mol wt of O2 is 32
0.118 moles weighs 0.118X32 = 3.78 gm O2
A sample of a gas in a 4 L container at 300 K has a pressure of 1 atm. If the temperature is increased to 600 K and the volume is decreased to 2 L, the pressure is likely to be closest to which of the following?
0.5 atm
в
1 atm
с
2 atm
D
4 atm
Answer:
Explanation:
Did u ever get the answer?
---
What ion will be formed by the sulfur atom shown below when it has a stable set of
valence electrons or it satisfies the octet rule?
If 8.77g of potassium iodide (KI) are dissolved in sufficient water to make 4.75L of solution, what is the molarity of the solution
Answer:
0.0111mol/L
Explanation:
M = n/V
We don't know n, but we know that n =mass/Molar mass, so:
n = 8.77g/166.0028 g/mol
n = 0.0528304342mol
M = n/V
M = 0.0528304342mol/ 4.75L
M = 0.111221967mol/L
Round to three sig figs if necessary: 0.0111mol/L
The molarity of the solution is 0.010M.
Molarity:
Molar concentration is a measure of the concentration of a chemical species, in particular of a solute in a solution, in terms of amount of substance per unit volume of solution.
Given:
Mass=8.77g
Volume= 4.75 L
To find:
Molarity=?
Firstly we need to calculate the number of moles.
Molar mass of KI= 166 g/mol
Given mass= 8.77 g
[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}} \\\\\text{Number of moles}=\frac{8.77}{166}= 0.05 \text{mol}[/tex]
Now, substituting the values in molarity formula which is given as:
[tex]\text{Molarity}=\frac{n}{V} \\\\\text{Molarity}=\frac{0.05}{4.75} =0.010M[/tex]
Therefore, the molarity of the solution is 0.010M.
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Waves can transfer energy, but they...
1-always have the same wavelength
2-cannot carry sound
3-are unable to move through empty space
4-do not move matter
Answer:
A.
Explanation:
what are possible components of ionic compounds? check all that apply.
Answer:
a metal and a polyatomic anion
metal and a nonmetal
Answer:
A Metal and a Nonmetal
a Metal and a Polyatomic metal
Explanation:
Edge 2021
Help Asap for Brainlist
Answer:
Zinc
Explanation:
In three to five sentences, predict the bonding activity of magnesium (mg) and chlorine (Cl). Why do you think they would bond that way?
Answer:
Magnesium and Chlorine have a great difference in there electronegativies. Due to this, they will form an ionic bond. Magnesium has 2 valence electrons and chlorine has 7. Therefore, two magnesium atoms will give one electron to one chorine atom, making the chlorine atom stable.
The bonding activity of magnesium (mg) and chlorine (Cl) will lead to ionic bonding.
It should be noted that Magnesium and Chlorine have a great difference in their electronegative and this will lead to the formation of an ionic bond.
Magnesium has 2 valence electrons while chlorine has 7 valence electrons. In such a case, the two magnesium atoms will give one electron to one chlorine atom. This is vital for making the chlorine atom stable.
In conclusion, an ionic bond will be formed between them.
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Boron is a brittle, black_______ that can be used to
make cookware.
Answer:
Metalloid/Solid
Explanation:
How many ions are in 32.45 grams of silver carbonate
Answer:
0.0036265350669622
Explanation:
Report if wrong
-Atlas-
13. Name the following ionic compounds using what you learned from Model 2. Li O
MgF2
ALS:
KN
Answer:
1. Li₂O → Lithium Oxide
2. MgF₂ → Magnesium Fluoride
3. For "ALS", I'm assuming you mean Al₂S₃ (Correct me if I'm wrong) → Aluminum Sulfide.
4. KN₃ (Again, assuming you mean KN₃, not "KN") → Potassium Azide
Describe the nitrogen cycle
The nitrogen cycle is a repeating cycle of processes during which nitrogen moves through both living and non-living things: the atmosphere, soil, water, plants, animals and bacteria. In order to move through the different parts of the cycle, nitrogen must change forms. The nitrogen cycle is the biogeochemical cycle by which nitrogen is converted into multiple chemical forms as it circulates among atmosphere, terrestrial, and marine ecosystems. Important processes in the nitrogen cycle include fixation, ammonification, nitrification, and denitrification.
Hope this helps, have a nice day! :)
Why is a crystal of Strontium chloride described as an extended structure?
Answer:
Explanation:
Chloride is described as an extended structure because its atoms are arranged following an endless repeating pattern and are of distinct ratio
Crystals and polymers mostly form extended structures as seen in the formation of sodium chloride whereby the ions in the compound are arranged following a repeating pattern. ( i.e. has a giant ionic structure ).
Chloride is a considered an extended structure because in sodium chloride it forms an unending repeated pattern of ions which makes it a perfect example of an extended structure.
Hence we can conclude that Chloride can be described as an extended structure because its atoms are arranged following a repeating pattern and are of distinct ratio.
Crystal of Strontium chloride is described as an extended structure because it is arranged in a repeating pattern.
Crystals form extended structures means a group of atoms or molecules in a distinct ratio that are present in a repeating pattern. Crystals are made up of atoms of one element that grouped together or can be made up of molecules grouped together.
Due to repeating pattern and constant ratio of strontium chloride then it is considered as repeating structure so we can conclude that Crystal of Strontium chloride is considered as an extended structure due to its arrangement in a repeating pattern.
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