Explanation:
As the reaction progresses, less surface area becomes available and, thus, the reaction slows down until eventually there is nothing left to react. Of course, there are ways to increase the reaction rate; namely by adding a catalyst (such as liver).
Determine the genotypes of offspring 1-8.
Consider this reaction. What volume of oxygen gas, in milliliters, is required to react with 0.640 g of SO2 gas at S TP? 11.2 mL 22.4 mL 112 mL 224 mL
Answer:
112mL
Explanation:
We'll begin by calculating the number of mole in 0.640g of SO2.
This is illustrated below:
Molar mass of SO2 = 32 + (16x2) = 64g/mol
Mass of SO2 = 0.640g
Number of mole of SO2 =.?
Mole = mass /molar mass
Number of mole of SO2 = 0.640/64
Number of mole of SO2 = 0.01 mole
Next, we shall determine the number of mole of O2 required for the reaction. This is illustrated below:
2SO2(g) + O2(g) —> 2SO3(g)
From the balanced equation above,
2 moles of SO2 reacted with 1 mole of O2.
Therefore, 0.01 mole of SO2 will react with = (0.01 x 1)/2 = 0.005 mole of O2.
Therefore, 0.005 mole of O2 is required for the reaction.
Finally, we shall determine the volume of O2 required for the reaction as follow:
Note: 1 mole of a gas occupy 22.4L (22400mL) at stp.
1 mole of O2 occupy 22400mL at stp.
Therefore, 0.005 mole of O2 will occupy = 0.005 x 22400 = 112mL
Therefore, 112mL of O2 is required for the reaction.
Answer:
the answer is C
Explanation:
i did the test on edg and got it right
Which of the following has the shortest bond lenght Options A). H2 B).N2 C).O2 D).F2
Answer:
B. N2
Explanation:
The triple bonds pull the atoms closer together, and since N2 is the only molecule with the triple bond, it is the shortest bond length.
Name the first 20 elements of the pereodic table
Answer:
alkali metals hydrogen lithium sodium potassium rubidium cesium francium alkaline earth metals beryllium magnesium calcium strontium barium radium group 3 boron aluminium gallium indium thalium carbon family carbon silicon germanium tin lead
Explanation:
i hope this will help you :)
There's Hydrogen and Helium
Then Lithium, Beryllium
Boron, Carbon everywhere
Nitrogen all through the air
With Oxygen so you can breathe
And Fluorine for your pretty teeth
Neon to light up the signs
Sodium for salty times
Silicon
(Phosphorus, then Sulfur) Chlorine and Argon
(Potassium) And Calcium so you'll grow strong
(Scandium) Titanium, Vanadium and Chromium and Manganese
This is the Periodic Table
Noble gas is stable
Halogens and Alkali react aggressively
Each period will see new outer shells
While electrons are added moving to the right
Iron is the 26th
Then Cobalt, Nickel coins you get
Copper, Zinc and Gallium
Germanium and Arsenic
Selenium and Bromine film
Which describes gneiss?
igneous
formed from shells
tends to split along bands
grains randomly arranged
Answer:
tends to split along bands
Explanation:
Answer: C
Explanation: E2022
what is the concentration of nitric acid solution with pH 2
Answer:
Nitric acid = HNO3
HNO3 → H+ NO3 2-
Since it's an acid
pH = -log of concentration of H+ ions
pH = -log (H+)
2 = -log(H+)
Taking antilog of both sides
H+ = 10^-2
= 0.01
Concentration of nitric acid = 0.01mol/dm^-3
Hope this helps.
write the steps you would use for making tea.use the words solution,solvent,solute,dissolve,soluble,insoluble,filtrate and residue
A very good example of soft water is A. Distilled water B. Sea water C. Underground water D. Polluted water
Answer:
The answer is option A.
Distilled water
Since all the chemicals that will cause hardness in the water has been removed.
Hope this helps.
Which refers to a measure of how acidic or basic a solution is? pH solubility reactiveness hardness
Answer:
it is Ph of solution that tells you the acdic and basic nature of solution
if PH is lower than 7 the soution is acidic and if PH is larger than 7 the solution is basic
Explanation:
Answer:
A. Ph
Explanation:
During which event does the moon appear closer? Select one: a. Apogee b. Penumbra c. Perigee d. Umbra
Answer:
Perigee
Explanation:
In Perigee, The moon appears closer.
what is the other metal react iron which get rusted
Answer:
The answer is OXIDATION REACTION.
Answer:
There's no other metal.
Explanation:
Iron reacts only with water and air to get the object rusted. There is no other metal which reacts with iron to get the object rusted.
However,
Zinc can be used to protect Metal from Rusting.
is the following sentence true or false, in undisturb sedimentary rocks, the oldest layers are found on the bottom
Answer:
True.
Explanation:
this is because undisturbed sedimentary rocks forms in layers.
Calculate the grams of calcium present in 70 grams of calcium chloride.
Answer:
37.1g of Ca
Explanation:
Hello,
Molecular formula for calcium chloride = CaCl
Molar mass = 40 + 35.5 = 75.5g/mol
Assuming there's one mole of CaCl
1 mole = mass / molar mass
Mass = 1 × 75.5
Mass = 75.5g
75.5g of CaCl contains 40g of Calcium
70g of CaCl will contain x g of Calcium
X = (70 × 40) / 75.5
X = 37.086g
Therefore, 70g of CaCl contains approximately 37.1g of Ca
can anyone just help me with these
Identify the following compounds as either ionic (I)or Covalent (c)
Explanation:
3 C
4 C because bonds of non-metal to non-metal N to O
5 I because metal ion loss valence electron Ca2+ non-metal gains valence electron F-
The formula of copper sulfide is CuS but the formula of copper sulfate is CuSO4. State and explain the names of the compounds with the formulae Na3P and Na3PO4. Na3P: Na3PO4: explanation:
Answer:
Na3P is Sodium phosphide
Na3PO4 is sodium phosphate
Explanation:
Na3P is a combination of the element sodium
and the element phosphorus.
When writing the chemical formula of compounds , we have to take into consideration the valencies or combining powers of the individual parties, whether single elements or radicals
Under general terms, the valency of sodium is -+1 and its combining form can be written as Na+. While in the case of phosphorus, its own is -3 and its form is P3-.
Now, to write the chemical formula, there has to be an exchange of valencies by the two elements in question. That is why finally, sodium took 3 and phosphorus took 1 and we have Na3P.
Now, for the name phosphide, phosphides are binary compounds that contain phosphorus and a metal . When we talk of binary compounds, we mean compounds that have two elements only. So because sodium is a metal, we have to give the name phosphide to the compound.
Na3PO4
Referencing the explanation made above, but this is a bit different. We have sodium coming in contact with a radical here. The combination it is making here is with the phosphate ion (PO4)3-.
So as usual, there is an exchange of valency and thus sodium takes the 3, while the whole phosphate group take 1. So therefore, the name of the compound is gotten from the combination of the individual parties and it is called sodium phosphate.
what happens when sodium and sulfur combine
Answer:
It emits hydrogen sulfide...smells like rotten eggs..
ty:)pls let me know whether this is ryt:D
Answer:
Hey!
Your answer is that it creates hydrogen sulfide gas / liquid...
Which really smells...
Explanation:
HOPE THIS HELPS!
Give examples of partially miscible liquids.
Answer: Water, alcohols, aldehydes, and ketones.
Explanation:
Answer:
Examples of Partially Miscible and Immiscible Liquids: Illustrations of immiscible liquids are cooking oil and water, milk and oil, gasoline and water, and liquid metals and water. There are as well partially miscible liquids such as honey and water, butanol and water, and potassium chloride and water.
Explanation:
Hope it helps
PLEASE HELP
Which Is a result of topsoil loss A increase soil fertility B poor crop production C soften soil surface D deposition of aggregate
Answer:
B - Poor crop production
Explanation:
I just did the quiz on Edge 2021
Answer:
b
Explanation:
Which one of the following oxide has both acidic and basic properties?
A. MgO
B. N2O
C. Al2O3
D. SO2
Answer:
The answer is C
Explanation:
Aluminium oxide is an amphoteric oxide.
MgO is a basic oxide.
N2O is an acidic oxide.
SO2 is an acidic oxide.
For the process 2SO2(g) + O2(g) Right arrow. 2SO3(g), Delta.S = –187.9 J/K and Delta.H = –198.4 kJ at 297.0 K are known. What is the entropy of this reaction? Use Delta.G = Delta.H – TDelta.S.
Answer:
The entropy of this reaction (ΔS) = -187.9 J/K
Explanation:
.Step : Data given
ΔS = -187.9 J/K
ΔH = -198.4 kJ
T = 297.0 K
Step 2: The balanced equation
2SO2(g) + O2(g) → 2SO3(g)
Step 3: Calculate the entropy
ΔG = ΔH - TΔS
⇒ΔG = the gibbs free energy
⇒ΔH = the change in enthalpy of the reaction = -198.4 kJ
⇒with T = the temperature = 297.0 K
⇒with ΔS = the change of entropy = -187.9 J/K
ΔG = -198400 kJ -297*(-187.9kJ/mol)
ΔG = -198400+55806.3
ΔG = - 142593.7 kJ = the gibbs free energy
The entropy of this reaction (ΔS) = -187.9 J/K
Answer:
C. -187.9 J/K
Explanation:
Entropy is just ΔS, which it gives you in the question as -187.9 J/K.
Consider the intermediate chemical reactions. 2 equations. First: upper C a (s) plus upper C upper O subscript 2 (g) plus one half upper O subscript 2 (g) right arrow upper C a upper C upper O subscript 3 (s). Delta H 1 equals negative 812.8 kilojoules. Second: 2 upper C a (s) plus upper O subscript 2 (g) right arrow 2 upper C a upper O (s). Delta H 2 equals negative 1, 269 kilojoules. The final overall chemical equation is Upper Ca upper O (s) plus upper C upper O subscript 2 (g) right arrow upper C a upper C upper O subscript 3 (s).. When the enthalpy of this overall chemical equation is calculated, the enthalpy of the second intermediate equation is halved and has its sign changed. is halved. has its sign changed. is unchanged.
Answer: When the enthalpy of this overall chemical equation is calculated, the enthalpy of the second intermediate equation is halved and has its sign changed.
Explanation:
Hess’s law of constant heat summation states that the amount of heat absorbed or evolved in a given chemical equation remains the same whether the process occurs in one step or several steps.
According to this law, the chemical equation is treated as ordinary algebraic expressions and can be added or subtracted to yield the required equation. This means that the enthalpy change of the overall reaction is equal to the sum of the enthalpy changes of the intermediate reactions.
The overall chemical reaction follows:
[tex]CaO(s)+CO_2\rightarrow CaCO_3(s)[/tex] [tex]\Delta H^o_{rxn}=?[/tex]
The intermediate balanced chemical reaction are:
(1) [tex]Ca(s)+CO_2(g)+\frac{1}{2}O_2(g)\rightarrow CaCO_3(s)[/tex] [tex]\Delta H_1=-812.8kJ[/tex]
(2) [tex]2Ca(s)+O_2(g)\rightarrow 2CaO(s)[/tex] [tex]\Delta H_2=-1269kJ[/tex]
The expression for enthalpy of the reaction follows:
[tex]\Delta H^o_{rxn}=[1\times (\Delta H_1)]+[\frac{1}{2}\times (-\Delta H_2)][/tex]
Hence, when the enthalpy of this overall chemical equation is calculated, the enthalpy of the second intermediate equation is halved and has its sign changed.
Answer:
A. is halved and has its sign changed.
Explanation:
just took the test on edge
Which symbol can be used to indicate the pressure at which a chemical reaction is carried out?
25°C
2 atm
Pt
Answer:
2 atm
Explanation:
Different symbols have different meanings in chemistry. For example, the symbol Δ = adding energy to the reactants.
To identify whether the reactants combine with a specific pressure, we have to use the symbol atm, in such a case 2 atm.
Hope that helps!
What symbol is used in a chemical equation to indicate “produces” or “yields”?
Answer:
This should help you with your problem
The symbol that is used to indicate “produces” or “yields” is "→"
Forward arrow is used to indicate the reaction moving towards products.
Chemical reaction:In a chemical reaction this forward arrow "→" is used to differentiate between reactants and products.Reactants are written on L.H.S and Products are written on R.H.S.For example:H₂SO₄ (aq) + 2NaOH(aq) → Na₂SO₄(s) + 2H₂O (l)
This reaction yields or produces sodium sulphate and water when sulphuric acid and sodium hydroxide reacts.
Find more information about Chemical reaction here:
brainly.com/question/26018275
In general, atmospheric pressure is greatest near Earth's surface and ____ as you move upward away from sea level.
(decreaes
(doubles
(stays the same
(increaes
Which compound contains covalent bonds? AlN Ca3N2 NaCl HCl
Answer:
Ca3N2
Explanation:
Why would satellite imagery be more useful than a map in some instances? provides landmarks, such as buildings can be used when Internet is not available takes more detailed images but only of very small areas provides various methods of transportation to a location
Answer: Its A, provides landmarks, such as buildings
Explanation:
the person above me is wrong </3
Answer:
A (provides landmarks, such as buildings)
Explanation:
Satellite imagery is a useful tool used in GPS and many other forms of digital mapping. It is often extremely detailed and useful for looking at what buildings are where! :))
[PLEASE ANSWER FAST] : When Sodium reacts with oxygen, it gives Sodium oxide. It is a redox reaction. What is the substance reduced here?
Answer:
The substance reduced is oxygen.
Hope this helps.
Answer:
Oxygen is reduced
Explanation:
This is because when oxygen is changing to Sodium oxide , metal is added . The addition of the metal there is reduction in this sense oxygen is reduced but with the sodium , oxygen is being added to the sodium hence sodium is oxidized
Sulfur dioxide is released when fossil fuels burn. What does sulfur dioxide cause? ASAP PLZ
Answer:
acid rain
Explanation:
When sulfur dioxide combines with water and air, it forms sulfuric acid, which is the main component of acid rain. Acid rain can: cause deforestation.
Which is an issue that governments must consider before passing conservation policies? urbanization implications cost to implement conservation policies desertification implications cost to implement deforestation
The issue government must consider before passing conservation policies is : ( B ) cost to implement conservation policies
The cost benefit of the passing and implementation of any government policy plays a very vital role in determining, how and when the government will pass the policy.
The conservation policies help to conserve our environment and retain natural habitats of organisms. therefore the cost effect of implementing the policies is a very important factor that must be considered by the government
Hence we can conclude that The issue government must consider before passing conservation policies is cost to implement conservation policies
Learn more about conservation policies : https://brainly.com/question/1619465
help on this one, i have no idea how to do it
Answer:
c
Explanation: