Answers
Answer(s):
Template: reactants ⇒ products
1. [tex]Ag+KNO_3[/tex] ⇒ [tex]AgNO_3 + K[/tex]
2. [tex]Zn+AgNO_3[/tex] ⇒ [tex]Zn(NO_3)_2 + Ag[/tex]
3. [tex]Al + H_2SO_4[/tex] ⇒ [tex]Al_2(SO_4)_3 + H_2[/tex]
4. [tex]Cl_2+KI[/tex] ⇒ [tex]HCl + I_2[/tex]
5. [tex]Li + H_2O[/tex] ⇒ [tex]LiOH + H_2[/tex]
6. [tex]Cu + FeSO_4[/tex] ⇒ [tex]CuSO_4 + Fe[/tex]
7. [tex]Na + H_2O[/tex] ⇒ [tex]NaOH + H_2[/tex]
8. [tex]Fe+Pb(NO_3)_2[/tex] ⇒ [tex]Fe(NO_3)_2 + Pb[/tex]
9. [tex]Cu+H_2O[/tex] ⇒ [tex]CuO + H_2[/tex]
10. [tex]Cu+Al_2(SO_4)_3[/tex] ⇒ [tex]CuSO_4 + Al[/tex]
11. [tex]Al + Pb(NO_3)_2[/tex] ⇒ [tex]Al(NO_3)_3 + Pb[/tex]
What is a chemical equation?
A chemical equation consists of the chemical formulas of the reactants (on the left) and the products (on the right). The two are separated by an arrow symbol (“→” usually read aloud as “yields”). Each individual substance's chemical formula is separated from others by a plus sign.
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Related Questions
Do tanning beds have nuclear fission or fusion?
Answers
Answer:
Neither? If it must be one then fission.
Explanation:
I actually didn't know they had fission, but I can absolutely gaurantee that they don't use fusion, nuclear fusion is a process that fuses hydrogen atoms together and releases a massive amount of energy, it used in hydrogen bombs and by our sun. It's a process that needs a massive amount of energy to kickstart and there's no way that technology would fit in a tanning bed. If I'm wrong then please tell me.
Hope this is a good answer.
Your best friend has passed on.write a tribute to him /her stating that person's characters and his/ her contribution to the society.
Answers
Answer:
a person with full of dignity and my best friend is now no more with me .
Consider the hydrocarbon below. a skeletal model with line segments going up, down, up, and up again in a triple bond. what is the name of this hydrocarbon? 1-ethyne 1-pentyne 1-ethane 1-butyne
Answers
The compound as shown corresponds to the compound 1-ethyne.
What is a hydrocarbon?The term hydrocarbon refers to a compound that is composed of only hydrogen and carbon. A hydrocarbon may be an alkane, alkene, alkyne or aromatic compound.
Looking at the structure of the compound as shown, the structure corresponds to the compound 1-ethyne.
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Answer:
D.
Explanation:
I took the test
What type of molecule is pentanal?
o a. ester
b. alcohol
o c. ketone
o d. aldehyde
i will mark brainliest!!!!
Answers
Balance the equation for a half-reaction that occurs in acidic solution. Use e− as the symbol for an electron
Answers
The balanced half-reaction equation is [tex]MnO_4^- + 4H^+ --- > MnO_2 + 2H_2O + 3e^-[/tex]
What is a redox reaction?The term redox reaction has to do with a reaction in which there is a loss or gain of electrons. In this reaction, one specie accepts electrons while another species loses electrons.
The balanced half-reaction equation in acid is;
[tex]MnO_4^- + 4H^+ --- > MnO_2 + 2H_2O + 3e^-[/tex]
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If 35 grams of HCl were dissolved in enough water to make a solution with a total volume of 5.0 liters, what would be the molarity of the solution?
Answers
Answer: 0.19 M
Explanation:
The gram formula mass of HCl is 36.46 g/mol, so 35 grams of HCl is about 35/36.46 = 0.96 moles.
molarity = (moles of solute)/(liters of solution) = 0.96 / 5.0 = 0.19 M
Molarity (M) = 0.961 moles / 5.0 liters ≈ 0.1922 mol/L
The molarity of the solution is approximately 0.1922 mol/L or 0.1922 M.
To calculate the molarity (M) of the solution, we need to use the formula:
Molarity (M) = Number of moles of solute / Volume of solution (in liters)
Given that 35 grams of HCl are dissolved in 5.0 liters of water, we first need to find the number of moles of HCl using its molar mass.
The molar mass of HCl (hydrochloric acid) is the sum of the atomic masses of hydrogen (H) and chlorine (Cl):
Molar mass of HCl = 1.01 g/mol (H) + 35.45 g/mol (Cl) = 36.46 g/mol
Now, we can calculate the number of moles of HCl:
Number of moles = Mass of HCl / Molar mass of HCl
Number of moles = 35 g / 36.46 g/mol ≈ 0.961 moles
Finally, we can calculate the molarity of the solution:
Molarity (M) = 0.961 moles / 5.0 liters ≈ 0.1922 mol/L
The molarity of the solution is approximately 0.1922 mol/L or 0.1922 M.
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How many moles are in 1.5x1023 molecules of Na2SO4?
Answers
Can the law of conservation of mass be applied when cooking? In one to two sentences, explain why or why not. Please give an example without water.
Answers
The law of conservation of mass is must be applied when cooking.
What is conservation of mass?Law of conservation of mass states that mass of any substance will change into another form without any loss of mass, means destroying of mass is impossible.
When we cook food then mass of conservation is applied there, for example we are boiling pulses with water then in that case the amount of formed liquid pulses is equal to the initial mass of solid pulse with water.
Hence law of conservation of mass is applicable during cooking.
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please help The sun uses nuclear fusion to generate its energy. In the very distant future, the sun will eventually run out of fuel.
A. All the hydrogen and smaller elements will eventually will fuse into larger elements until fusion is longer possible
B. the sun will stop burning once all the atoms have spilt
Answers
Answer:
A
Explanation:
the answer is a because the sun cannot stop burning but will rather burn hotter Then decay amongst the atoms in space
HELP PLEASE I BEG OF YOU
14-karat gold is 58 percent gold and 42 percent copper. calculate the actual amount of gold in a 65-g 14 karat gold chain.
Answers
Answer:
37.7%
Explanation:
58% of 65 is 37.7%
A cone-shaped landform develops when magma erupts from the _______ forming a volcano science
Answers
Answer:
Magma chamber
Explanation:
When a volcano erupts, the magma (also called lava when out of the magma chamber) erupts out of the vents.
could someone help, I know its a pretty simple concept but I've been doing a lot of stuff today and my brain is fried
Answers
Answer:
-268.42 C DEGREES
Explanation:
P1/T1 = P2/T2
63 / (25+273.15) = 1 / T2
T2 = 4.73 K = -268.42
What is the mass percentage of C in caffeine, C₈H₁₀N₄O₂? Provide an answer to two decimal places.
Answers
Answer:
46.8% should be. correct, I'm not fully sure though. : )
The mass percentage of the carbon in the caffeine C₈H₁₀N₄O₂ is equal to 49.48 %.
What is the mass percent formula?The mass percentage formula can be expressed by mass of the each element in one mole of the compound divided by the molar mass of the compound.
The mass percentage of one component in any compound can be calculated as follows:
Mass percent = (Mass of an element one mole of the compound)/(Molar mass of compound) ×100
Given, the chemical formula of the compound caffeine is C₈H₁₀N₄O₂.
The molar mass of the caffeine, C₈H₁₀N₄O₂ = 194 g/mol
We know that the atomic mass of carbon (C) = 12 g/mol
The mass of the carbon in caffeine = 8 × 12 = 108 g/mol
The mass percent of carbon = (108/194) × 100 = 49.48 %
Therefore, the mass percentage of carbon in caffeine is equal to 49.48 %.
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Enter an equation to show how h2po3− can act as a base with hs− acting as an acid
Answers
The base is the species that accept hydrogen, and the acids donate hydrogen ions. Dihydrogen phosphite acts as a base and hydrosulfide sulfanide act as an acid.
What are acids and bases?Acids are molecules or chemical species that can donate a proton or a hydrogen ion to another chemical species.
Bases are the ions or molecules that accept a proton or hydrogen ion and release a hydroxide ion.
The acid and base relationship is shown as,
[tex]\rm H2PO_{3}^{-} + HS^{-} \leftrightarrows S^{-} + H_{3}PO_{3}[/tex]
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5. Which describes why the sun is a renewable resource?
a. The sun does not cause pollution.
b. The sun creates biomass.
c. The sun is continuously releasing energy.
Answers
Greenhouse gases,,,
absorb heat from the sun
trap ozone at Earth’s surface
are only produced naturally
keep Earth cool
Answers
Answer:
absorb heat from the sun
Explanation:
Greenhouse gases are specific type of gases that possess the ability to trap and emit heat/thermal energy in the atmosphere. They are able to do this because of their structure. Examples of greenhouse gases are carbon dioxide (CO2), methane (CH4), chlorofluorocarbon (CFC) etc and are mostly produced via anthropogenic activities.
Greenhouse gases are therefore, produced both artificially (by burning fossil fuels) and naturally and functions to absorb heat from the atmospheric surroundings.
Why is knowing the density of water importance to us? please don’t copy and paste explain why for this question
Answers
in order to get quality of water
A substance that has a pH = 7 is a/an
-Acid
-base
-neutral solution
-none of the above
Answers
Explain how energy causes changes to earths surface
Answers
Answer:
Explanation:
The absorbed sunlight drives photosynthesis, fuels evaporation, melts snow and ice, and warms the Earth system. Solar power drives Earth's climate. Energy from the Sun heats the surface, warms the atmosphere, and powers the ocean currents.
Which of the following radiactive elements was often put in beauty products?
Francium
Curium
Radium
Uranium
Answers
Answer:
Radium
Explanation:
Radium is a radioactive element which was often put in beauty products.
Which reaction is endothermic? hcl naoh right arrow. nacl h2o 58 kj 6co2 12h2o energy right arrow. c6h12o6 6o2 6h2o 2na cl2 right arrow. 2nacl energy 2c2h6 7o2 right arrow. 4co2 6h2o 2,502 kj
Answers
Endothermic reactions are those in which heat is absorbed from the surroundings.
What are endothermic reactions?They are reactions in which heat is absorbed from the surrounding, making the reaction vessels become colder.
It is unlike exothermic reactions in which heat is released into the surrounding, making the reaction vessel to be warmer.
For endothermic reactions, the enthalpy change is always positive because heat is absorbed. It is however negative for exothermic reactions because heat is evolved.
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Answer:
B. 6CO2 + 12H2O + energy = C6H12O6 + 6O2 + 6H2O
Explanation:
What is the name of the industry that produces solvents, lubricants, polymers and detergents?
Answers
Answer:
the petrochemical industry
Explanation:
"Petrochemicals are the chemical products obtained from petroleum by refining. Some chemical compounds made from petroleum are also obtained from other fossil fuels, such as coal or natural gas, or renewable sources such as maize, palm fruit or sugar cane." - Textbook excerpt
Can some please help me complete this for me it’s due today!
Answers
Mass of (NH2)2CO formed from NH3 is 10.94g
Mass of (NH2)2CO formed from CO2 is 1.94g
Percentage yield = 82.47%
Explanation:
STEP 1
For NH3
No of moles of NH3 available for reaction = Mass/Molar mass
= 6.2/17.01
=0.3645mole
From the balanced equation of reaction, we see that 2 moles of NH3 produce 1 mole of (NH2)2CO
So, 0.3645 mole of NH3 will give 0.3645/2 moles of (NH2)2CO.
No of moles of (NH2)2CO= 0.18225mole
To find the mass of (NH2)2CO that can be produced from this, we say;
Mass = Mole × Molar mass
Mass = 0.18225mol × 60g/mol
Mass of (NH2)2CO produced from NH3 is therefore 10.94g.
For CO2
No of moles = mass/molar mass
= 1.42g/44gmol-1
= 0.03227mole
From the balanced equation of reaction, we see that 1 mole of C02 gives 1 mole of (NH2)2CO.
So, 0.03227mole of CO2 will give 0.03227mole of (NH2)2CO.
Mass of (NH2)2CO from this number of mole will then be = Mole × Molar mass of (NH2)2CO
= 0.03227 × 60
= 1.94g
The amount of (NH2)2CO formed from CO2 is therefore 1.94g
STEP 2
To calculate the percentage yield, we use;
%Yield = Actual yield/Theoretical yield × 100
The actual yield has been given to be 1.6g.
To calculate the theoretical yield, we look up to the limiting reagent of the reaction as the limiting reagent determines the extent a reaction can go.
Looking at the reactants, CO2 is the limiting reagent since it has the lowest number of mole (i.e., 0.03227mole)
So, we use this number of mole to calculate the theoretical yield of (NH2)2CO
= 0.03227mol × Molar mass of (NH2)2CO (i.e., 60gmol-1)
= 1.94g
% Yield = 1.6/1.94 × 100
% Yield = 82.47%
What pressure is required to contain 0.644 grams of nitrogen gas (N2) in a 4.2 L container at a temperature of 20 degrees Celsius?
**I NEED ANSWERS STEP BY STEP PLEASE**
Answers
0.13 atm pressure is required to contain 0.644 grams of nitrogen gas ([tex]N_{2}[/tex]) in a 4.2 L container at a temperature of 20 degrees Celsius.
What is an ideal gas equation?The ideal gas equation, pV = nRT, is an equation used to calculate either the pressure, volume, temperature or number of moles of a gas. The terms are: p = pressure, in pascals (Pa). V = volume, in [tex]m^3[/tex].
Calculating moles of [tex]N_{2}[/tex]:
Moles = [tex]\frac{Given mass}{ molar mass}[/tex]
Moles = [tex]\frac{0.644 }{ 28}[/tex]
Moles = 0.023
Now, using the Ideal Gas Law;
PV=nRT
We can rearrange to solve for pressure:
P=nRT/V
P is pressure, n is the number of moles (0.023), R is a constant (0.08206 L*atm/mol*K), T is the temperature in Kelvin (293.15K) and V is volume, 4.2 L.
So, plugging in;
P=[tex]\frac{(\;0.023\;mol)(0.08206\;L*\;atm\;/\;mol\;*\;K)(\;293.15\;K)}{(\;4.2\; L)}[/tex]
P=0.1317 atm
Hence, 0.13 atm pressure is required to contain 0.644 grams of nitrogen gas ([tex]N_{2}[/tex]) in a 4.2 L container at a temperature of 20 degrees Celsius.
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Which of the following is a compound?
sodium
iron
carbon dioxide
chicken noodle soup
Answers
When the elements combine, some individual property of the elements is lost and the newly formed compound has new properties. Here among the given options, the compound is carbon dioxide. The correct option is C.
What is a compound?The chemical substances which are made up of two or more elements that are chemically bound together in a definite ratio are defined as the compounds. The compounds are represented by the chemical formula.
A chemical formula is the symbolic representation of atoms which constitute a particular chemical compound. The chemical formula of water is H₂O, which contains 'H' and 'O' atoms.
Here the chemical formula of the compound carbon dioxide is CO₂ and it is made up of two different elements, they are 'C' and 'O' atoms. The type of bonds in a compound may be ionic or covalent.
Thus the correct option is C.
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If spin is not included, how many different wave functions correspond to the first excited level n = 2 for hydrogen?
Answers
If spin is not included, there are 4 different waves functions correspond to the first excited level n = 2 for hydrogen.
What are wave function?In quantum mechanics, a wave function is a variable quantity that mathematically describes a particle's wave characteristics.
The probability of a particle being present at a given point in space and time is related to the value of the particle's wave function.
Thus, there are 4 different waves functions correspond to the first excited level n = 2 for hydrogen.
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Under what conditions of temperature and pressure is a gas least soluble in water
Answers
The conditions of temperature and pressure in which a gas least soluble in water is low pressure and high temperature.
What is Henry Law?The amount of dissolved gas in a liquid is proportional to its partial pressure above the liquid, according to Henry's law.
From this law it is clear that:
As the pressure of the gas increases solubility of the gas on the liquid also increases.But if the temperature of the liquid decreases then the solubility of the gas also increases.
Hence at low pressure and high temperature, gas is least soluble.
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6.50x10^4+8.70x10^5 express the following in scientific notation.
Answers
Answer:
9.35 × 10⁵
Explanation:
( 6.50 × 10⁴ ) + ( 8.70 × 10⁵ ) = 935,000
935,000 = 9.35 × 10⁵
As the atomic number of elements within Group 2 increases, the metallic character of each successive element
(1) decreases
(2) increases
(3) remains the same
Answers
Explanation: Metals are substances which readily loose electrons.
How many protons does Pb4+ have
Answers
Answer:
82
Explanation:
the 4+ does not change the number of protons...it changes the number of ELECTRONS....
from a periodic table of elements the number of protons = 82