Explanation:
a. Write a balanced equation
The balanced equation for the reaction is given as;
Zn + AgNO3 → Ag + ZnNO3
b. Interpret the equation by particles and by moles
In this equation, 1mol of Zn reacts with 1 mol of AgNO3 to from 1 mol of Ag and 1 mol of ZnNO3
1 mol = 6.022 * 10^23 particles
c. What is the limiting reactant?
The mol ratio between both reactants is 1 : 1 from the equation.
Converting the masses given to ml;
Number of mol = Mass / Molar mass
Zn;
Number of mol = 6.70 / 65.38 = 0.1025 mol
AgNO3;
Number of mol = 27.5 / 169.87 = 0.1619 mol
The limiting reactant in this reaction is Zn. This is because Zn would get used up before AgNO3 according to the number of moles calculated.
d. What is the theoretical mass of silver that will be produced?
1 mol of Zn produces 1 mol of Ag
0.1025 mol of Zn would also produce 0.1025 mol mol of Ag
Mass = Molar mass * Number of Moles = 107.87 * 0.1025
Mass = 11.05 g
e. If the actual yield of silver was 14.1 g, what is the percent yield of the
reaction?
Percent yield = Actual Yield / Theoretical yield * 100%
Percent yield = 11.05 / 14.1 * 100 = 78.36%
32 g of a metal, M, reacts with 8 g of oxygen to form an oxide. The formula of the oxide is MO. What is the atomic mass of M in g mol-?
Answer: M= 128 g/mol (Te is quite close)
Explanation: number of Oxygen moles is n = 8 g / 32 g/mol = 0,25 mol.
Because formula of oxide is MO, thus amount of metal is also 0,25 mol.
Because n = m/M , Molar mass of the metal M = m/n = 32 g /0.25 mol = 128 g/ mol
what is heterogenous mixture
Answer:
heterogeneous mixture is a mixture that is non-uniform and contains smaller component parts.
Answer:
heterogenous mixture is type of mixture
Explanation:
it is one type of mixture involve in the mixture of different or hetro substance and can also easely separated or seen by naked eye example mixture of water and sand
The reason for the trend in the previous question is because Bromine is _________electron density from the carbon the proton is on, resulting in the proton being ___________, thus the proton nuclei is_________ effected by the applied magnetic field leading to a greater difference in energy of the nuclei's spin states.
Answer:
Explanation:
From this question, we are to fill in the blanks with the appropriate correct answers.
[tex]\text{The reason for the trend in the previous question is because Bromine is } \mathbf{withdrawing}[/tex][tex]\text{electron density from the carbon the proton is on, resulting in the proton being }\mathbf{deshielded, }[/tex][tex]\text{thus the proton nuclei is} \ \ \mathbf{more} \ \ \text{effected by the applied magnetic field leading to a }[/tex]
[tex]\text{greater difference in energy of the nuclei's spin states.}[/tex]
NOTE: that the electron-withdrawing groups decrease the electron density around the proton nucleus and therefore the nucleus feels the external magnetic field more. Hence, it requires a larger frequency to attain resonance(downfield).
Explain this method (Froth floatation method)..........
Answer:
froth flotation is a technique commonly used in the mining industry. In this technique, particles of interest are physically separated from a liquid phase as a result of differences in the ability of air bubbles to selectively adhere to the surface of the particles, based upon their hydrophobicity.
Explanation:
Froth floatation method is commonly used to concentrate sulphide ore such as galena (PbS), zinc blende (ZnS) etc. (ii) In this method, the metaalic ore particles which are perferentially wetted by oil can be separated from gangue. (iii) In this method, the crushed ore is suspended in water and mixed with frothing agent such as pine oil, eucalyptus oil etc. (iv) A small quantity of sodium ethyl xanthate which act as a collector is also added. (v) A froth is generated by blowing air through this mixture. (vi) The collector molecules attach to the ore particles and make them water repellent. (vii) As a result, ore parrticles, wetted by the oil, rise to the surface along with the froth. (viii) The froth is skimmed off and dried to recover the concentration ore. (ix) The gangue particles that are preferentially wetted by water settle at the bottom.
Describe two functions of blood.
Answer:
Transports Dissolved gases and Controls pH The pH of blood must remain in the range 6.8 to 7.4, otherwise it begins to damage cells.
Explanation:
main functions tho Transportation. Nutrients from the foods you eat are absorbed in the digestive tract. ...
Defense. Many types of WBCs protect the body from external threats, such as disease-causing bacteria that have entered the bloodstream in a wound.
Maintenance of Homeostasis. Recall that body temperature is regulated via a negative-feedback loop.
1) This rock is made out of cooled magma.
A) Igneous
B) Sedimentary
C) Metamorphic
D) Sandstone
2) This type of rock is made through the processes of heat and pressure.
A) Igneous
B) Sedimentary
C) Metamorphic
D) Sand
3) Sandstone is a sedimentary rock. How does sandstone form?
A) It melted and cooled.
B) It broke into sediment and then compacted.
C) It was heated and put under pressure.
D) Rocks don’t form; they stay as they are.
4) What type of rock can be broken down into sediment through weathering?
A) Igneous
B) Sedimentary
C) Metamorphic
D) All types of rocks
5) How does rock from a mountain turn into small pieces of rock?
A) Wind and rain break the rock into small pieces.
B) Earthquakes and natural disasters break the rock.
C) The sun's rays break the rock.
D) Everything breaks into pieces if you leave it out.
6) Can igneous rock underneath Earth’s outer layer change into sedimentary rock?
A) Yes, but it must be subducted first.
B) Yes, but it must be weathered first.
C) Yes, but it must be uplifted first.
D) No, igneous rock can never become sedimentary.
7) This energy source creates magma, which is melted rock that will turn into igneous rock.
A) Sun
B) Air
C) Earth's Interior
D) Water
8) This energy source helps create weather, which creates sediment to form sedimentary rocks.
A) Air
B) Sun
C) Water
D) Earth's Interior
9) What is the difference between magma and lava?
A) Magma is very hot, lava is cool.
B) Magma is molten rock within the earth; lava is molten rock on the earth's surface.
C) Magma is molten rock on the earth's surface; lava is molten rock within the earth.
D) Magma is cool, lava is very hot.
1. a) Igneous.
2. c) Metamorphic.
3. b) It broke into sediment and then compacted.
4. d) All types of rocks.
5. a) Wind and rain break down the rock into small pieces.
6. a) Yes, but it should be subtuced first.
7. c) Earth's interior.
8. c) Water.
9. b) Magma is molten rock within the Earth; lava is molten rock on the Earth's surface.
A compound accepts electrons from another substance to form a covalent bond. Which term best describes this
compound's behavior?
-Lewis acid
-Arrhenius base
-Bronsted-Lowry acid
-Bronsted-Lowry base
Answer:
A). Lewis Acid
Explanation:
deez
The term that best describes the compound that accepts electrons from another substance to form a covalent bond is Lewis acid.
What is Lewis acid?Lewis acid is a compound or ionic species which can accept an electron pair from a donor compound while a Lewis base is a compound such as the OH- ion, that can donate a pair of non-bonding electrons.
According to this question, a compound accepts electrons from another substance to form a covalent bond.
Therefore, the term that best describes the compound that accepts electrons from another substance to form a covalent bond is Lewis acid.
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Neutralization Reactions
5. Acids and bases go to completion via neutralization reactions, thus titrations are applicable. Refer to educational resources and provide an example of the chemical reactions for the solutions in a–c.
a. A mixture between a strong acid and a strong base.
b. A strong base mixed with a weak acid.
c. A strong acid mixed with weak base.
Answer:
its a option neutralization takes place between acid and base plz mark me branliest
At what temperature (in K) does NH₃ have a density of 0.812 g/L at 1.17 atm?
Answer:
The temperature is "298.51 K".
Explanation:
The given values are:
Density of ammonia,
d = 0.812 g/L
Pressure,
P = 1.17 atm
Mass:
M = [tex]NH_3[/tex]
= [tex]14+ 1\times 3[/tex]
= [tex]17[/tex]
As we know,
⇒ [tex]PV=nRT[/tex]
∴ [tex]T=\frac{PV}{nR}[/tex]
[tex]=\frac{PV}{\frac{W}{M}\times R }[/tex]
[tex]=\frac{PVM}{W\times R}[/tex]
By putting the value of "W", get
[tex]=\frac{PVM}{V\times d\times R}[/tex]
[tex]=\frac{P\times M}{d\times R}[/tex]
On substituting the values in the above equation, we get
[tex]=\frac{1.17\times 17}{0.812\times 0.08205}[/tex]
[tex]=\frac{19.89}{0.06699}[/tex]
[tex]=298.51 \ K[/tex]
Answer:
299
Explanation:
Or 298.51 to be exact!
Suppose you are titrating vinegar, which is an acetic acid solution of unknown strength, with a sodium hydroxide solution according to the equation H C 2 H 3 O 2 + N a O H ⟶ H 2 O + N a C 2 H 3 O 2 HCX2HX3OX2+NaOH⟶HX2O+NaCX2HX3OX2 If you require 33.98 mL of 0.1656 M N a O H NaOH solution to titrate 10.0 mL of H C 2 H 3 O 2 HCX2HX3OX2 solution, what is the molar concentration of acetic acid in the vinegar? Type answer:
Answer:
[tex]M_{acid}=0.563M[/tex]
Explanation:
Hello there!
In this case, given the neutralization of the acetic acid as a weak one with sodium hydroxide as a strong base, we can see how the moles of the both of them are the same at the equivalence point; thus, it is possible to write:
[tex]M_{acid}V_{acid}=M_{base}V_{base}[/tex]
Thus, we solve for the molarity of the acid to obtain:
[tex]M_{acid}=\frac{M_{base}V_{base}}{V_{acid}} \\\\ M_{acid}=\frac{33.98mL*0.1656M}{10.0mL}\\\\ M_{acid}=0.563M[/tex]
Regards!
which memrane lines the abdomino pelvic cavity
Answer:
The peritoneum
Explanation:
The peritoneum is the serous membrane that surrounds several organs in the abdominopelvic cavity. The tunica vaginalis is the serous membrane, which surrounds the male gonad, the testis. The two layers of serous membranes are named parietal and visceral. Between the two layers is a thin fluid filled space.
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tysm if u do ill give brainliest :D
How many moles of NaHCO3 are in 2.4 x
1024 molecules of NaHCO:?
4.0 moles NaHCO
General Formulas and Concepts:Math
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightChemistry
Atomic Structure
MolesAvogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.Stoichiometry
Using Dimensional AnalysisExplanation:Step 1: Define
[Given] 2.4 × 10²⁴ molecules NaHCO
[Solve] moles NaHCO
Step 2: Identify Conversion
Avogadro's Number
Step 3: Convert
[DA] Set up: [tex]\displaystyle 2.4 \cdot 10^{24} \ molecules \ NaHCO(\frac{1 \ mol \ NaHCO}{6.022 \cdot 10^{23} \ molecules \ NaHCO})[/tex][DA] Divide [Cancel out units]: [tex]\displaystyle 3.98539 \ moles \ NaHCO[/tex]Step 4: Check
Follow sig fig rules and round. We are given 2 sig figs.
3.98539 moles NaHCO ≈ 4.0 moles NaHCO
Calculate the [OH-] in a solution that has a pH of 3.08.
a. 1.2x10-9
b. 8.3x10-3
C. 1.2x10-11
d. 8.3x10-4
Answer:
C. 1.2 x 10^-11
Explanation:
pOH = 14 - pH = 14 - 3.08 = 10.92
[OH-] = 10^-pOH = 10^-10.92 = 1.2 x 10^-11
PLEASE HELP 30 POINTS PLS PLS
Write a structural formula for each of the following: (a) 3-Methylcyclobutene (b) 1-Methylcyclopentene (c) 2,3-Dimethyl-2-pentene (d) (Z)-3-Hexene (e) (E)-2-Pentene (f) 3,3,3-Tribromopropene (g) (Z,4R)-4-Methyl-2-hexene (h) (E,4S )-4-Chloro-2-pentene (i) (Z)-1-Cyclopropyl-1-pentene (j) 5-Cyclobutyl-1-pentene (k) (R)-4-Chloro-2-pentyne (l) (E)-4-Methylhex-4-en-1-yne
Answer:
Attached below
Explanation:
(a) 3-Methylcyclobutene
(b) 1-Methylcyclopentene
(c) 2,3-Dimethyl-2-pentene
(d) (Z)-3-Hexene
(e) (E)-2-Pentene
(f) 3,3,3-Tribromopropene
(g) (Z,4R)-4-Methyl-2-hexene
(h) (E,4S )-4-Chloro-2-pentene
(i) (Z)-1-Cyclopropyl-1-pentene
(j) 5-Cyclobutyl-1-pentene
(k) (R)-4-Chloro-2-pentyne
(l) (E)-4-Methylhex-4-en-1-yne
The structural formula of a compound ( chemical ) is the representation of the molecular structure of the compounds ( i.e. it shows how the atoms in the compound is arranged, also the chemical bonding within the molecules are represented as well.
How many moles of product are formed? Can someone help me ?
Answer:
It says right under here what to do
Explanation
Determine the moles of product produced by dividing the grams of product by the grams per mole of product. You now have calculated the number of moles of every compound used in this reaction. 41.304 g of NaCl ÷ 58.243 g/mol = 0.70917 moles of NaCl.
In a neutralization reaction, bases donate.
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Answer: I think it is hydroxide ion but im not sure
Explanation:
I hope this helped!
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Is water an element or compound
Answer:
Compound
Explanation:
H2O is made up of multiple types of atoms, which makes it a compound. It isn't an element because they only consist of one type of atom.
valence number of a metallic element X is 3. What is the formula of its oxide?
Answer:
the formula of its oxide is X2O3.
There are two types of chemical compound one is covalent compound and other is ionic compound, covalent compound formed by sharing of electron and ionic compound formed by complete transfer of electron. Therefore, the formula of given metallic oxide is X[tex]_2[/tex]O[tex]_3[/tex].
What is chemical Compound?Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.
An ionic compound is a metal and nonmetal combined compound. Ionic compound are very hard. They have high melting and boiling point because of strong ion bond.
Since valence number of a metallic element X is 3 and valence number of oxide is 2. So, the formula of its oxide is X[tex]_2[/tex]O[tex]_3[/tex].
Therefore, the formula of given metallic oxide is X[tex]_2[/tex]O[tex]_3[/tex].
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Ca3(PO4)2 + 3H2SO4 3CaSO4 + 2H3PO4.
What mass of concentrated H2SO4 (98% by mass) must be used to react completely
with 100.00 g of calcium phosphate?
100g
H2SO4 = 3x98x100/310 = 94.84g
used mass of h2so4x100/all mass of H2so4 = 98%
yx100/98=94.84x100/98 = 96.81.
Check the attached photo for clear answer.
What is the use of calcium phosphate?It may be used to treat conditions caused by low calcium levels such as bone loss (osteoporosis), weak bones (osteomalacia/rickets), decreased activity of the parathyroid gland (hypoparathyroidism), and certain muscle diseases (latent tetany).
Is calcium phosphate good for health?About Calcium Phosphate Supplements
It aids in healthy bone development and is crucial from infancy to adulthood. But, calcium does more than build strong bones. It's also very important for healthy digestion. Calcium aids in bile acid metabolism, excretion of fatty acids, and healthy gut microbiota.
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Do molecules move in all phases? (yes/no)
Answer: sorta
Explanation:
In fact, they do not flow at all: they simply vibrate back and forth. Because the atoms in a solid are so tightly packed, solid matter holds its shape and cannot be easily compressed
Express
as
ordinary numbers.
3 x 10^0=
What happens to the pH when alkali is added to the distilled water?
Adding water to an acid or base will change its pH. ... The acid is becoming less acidic. Similarly, when an alkali is diluted with water the concentration of OH - ions decreases. This causes the pH of the alkali to fall towards 7, making the solution less alkaline as more water is added
Alkali is a chemical that is characterized by reacting with acids to produce salts. When alkali or base are added to the distilled water then pH increases.
What is pH?
The pH has been defined as the concentration of the hyronium or the hydrogen ions that releases when dissolved in water. The concentration of the hydroxide and the hydrogen are the determining factor of the acidic and basic nature.
The acids are characterized by the low pH (below 7) whereas, the basic compounds are characterized by the high pH (above 7). The pH scale is used to measure the pH of the solution.
When an alkali is added to the distilld water then hydroxide ions are relesed resulting in an increase in the basicity of the water sample. The pH range depends on the strong and weak base.
Therefore, the pH increases after ading alkaline solution.
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PCR amplification utilizes ________ template to produce a ________ product. For this question, select the answer that best describes the process as a whole: the nature of the template you used (the starting template added to the reaction) and the nature of the final product produced in your PCR analysis that you ran out on a gel will apply here.
Answer:
Double-stranded/Double-stranded
Explanation:
The PCR which is popularly known as polymerase chain reaction is the technique that uses the single copy of DNA to make thousands or levels a huge number(in terms of millions) of duplicates of that DNA.
The PCR is a laboratory procedure that is utilized to make various duplicates of a section of DNA as depicted previously. It is an unmistakable strategy.
There are 3 fundamental advances in PCR:
Denaturing
Annealing
Extending
In denaturing measure requires warming of the double-stranded DNA template to isolate it into a solitary strand. Eventually, it resulted into a double-stranded item.
Heat flows from hotter objects to colder objects until it reaches a state where heat is no longer flowing.What have the objects reached when heat is not longer flowing?
Practice: A gas reaction is allowed to take place in a canister while submerged in water at a temperature of 25oC. The gas expands and does P-V work on the surroundings equal to 385 J. At the same time, the temperature of the water decreases to 20oC as the energy in the gas reaction reaches 364 J. What is the change in energy of the system
Answer:
change in energy of the system = - 21 J
Explanation:
Δu = q + w
q = 364 J
w = - 385
Temperature of system drops from 25°c to 20°c
hence
Δu ( change in energy ) = q - w
= 364 - 385
= -21 J
The ratio of ducks to chickens in our backyard is 2:3. The total number of ducks and chickens together is 30. If mother gave away 3 chickens to our neighbor, what is the new ratio of ducks to chickens now?
Answer:
4:5
Explanation:
No. of chickens before giving away 3 chickens = 30 x 3/5 = 18
No. of ducks before giving away 3 chickens = 30 - 18 = 12
After giving away 3 chickens,
No. of chickens = 15
No. of ducks = 12
New ratio = 12:15 = 4:5
An unknown concentration of sodium thiosulfate, Na2S2O3, is used to titrate a standardized solution of KIO3 with excess KI present. Suppose 15.65 mL of the Na2S2O3 solution is required to titrate the iodine formed from 21.55 mL of 0.0131 M KIO3. What is the molarity of the Na2S2O3 solution
Answer: The molarity of [tex]Na_2S_2O_3[/tex] is 0.108 M
Explanation:
[tex]KIO_3+5KI+3H_2SO_4\rightarrow 3K_2SO_4+3H_2O+3I_2[/tex]
[tex]2Na_2S_2O_3+I_2\rightarrow Na_2S_4O_6+2NaI[/tex]
To calculate the number of moles for given molarity, we use the equation:
[tex]\text{Molarity of the solution}=\frac{\text{Moles of solute}}{\text{Volume of solution (in L)}}[/tex]
[tex]\text{Moles of }KIO_3=\frac{0.0131mol/L\times 21.55}{1000}=2.8\times 10^{-4}mol[/tex]
1 mole of [tex]KIO_3[/tex] produces = 3 moles of [tex]I_2[/tex]
[tex]2.8\times 10^{-4}[/tex] moles of [tex]KIO_3[/tex] produces = [tex]\frac{3}{1}\times 2.8\times 10^{-4}=8.4\times 10^{-4}[/tex] moles of [tex]I_2[/tex]
Now 1 mole of [tex]I_2[/tex] uses = 2 moles of [tex]Na_2S_2O_3[/tex]
[tex]8.4\times 10^{-4}[/tex] moles of [tex]I_2[/tex] uses = [tex]\frac{2}{1}\times 8.4\times 10^{-4}=1.69\times 10^{-3}[/tex] moles of [tex]Na_2S_2O_3[/tex]
[tex]\text{Molarity of the solution}=\frac{\text{Moles of solute}}{\text{Volume of solution in L}}=\frac{1.69\times 10^{-3}\times 1000}{15.65}=0.108M[/tex]
The molarity of [tex]Na_2S_2O_3[/tex] is 0.108 M
Many types of fungi are responsible for the breakdown and
recycling of organic material in an ecosystem. Fungi are an
example of a(n)
Answer:
mushroom are a type of fungi
Explanation:
five good habit to clean our surrounding
Answer:
Explanation:
Invest in a reusable water bottle. ...
Bring your own reusable cup. ...
Refuse single-use items. ...
Avoid products with microbeads. ...
Shop in bulk