Answer:
A is your answer
In a closed chamber, 58 grams of propane gas and 220 grams of oxygen gas are sparked to initiate the combustion reaction shown below. C₃H₈(g) + 5 O₂(g) → 3 CO₂(g) + 4 H₂O(l) What is the limiting reagent in this reaction?
propane
oxygen
water
carbon dioxide
Answer:
C) Propane
Explanation:
It's literally all I know
e) A plutonium atom splits apart to form two smaller atoms and free neutrons,
What type of reaction is this, where is it most likely to occur, and what else is
emitted during the reaction? (3 points)
Answer:
subject?
Explanation:
DIRECTIONS: Classify the following unbalanced chemical equations according to the six types
of chemical reactions. Write your answer on the space provided for each number.
1. NaOH + KNO3 NaNO3 + KOH
2. CH4 + O2 CO2 + 2H2O
3. Fe + NaBr FeBr3 + Na
4. CaSO4 + Mg(OH)2 Ca(OH)2 + MgSO4
5. NH4OH + HBr H2O + NH4Br
6. P4 + O2 P2O4
7. NaNO3 NaNO2 + O2
8. C18H18 + O2 CO2 + H2O
9. H2SO4 + NaOH NaSO4 +H2O
10.NiSO4 + Li3PO4 Ni3(PO4)2 + Li2SO4
Remember, the graph in question 1 is a cooling curve. A substance is
changing from a gas to a liquid to a solid. Which model illustrates the
final phase change in this cooling curve?
A) Image A
B) Image B
C) Image C
D) Image D
What is the correct unit for M1 and M2?
Answer:
M1 and M2 are the masses of two. objects exerting the force on each other, and R is the distance. between their centers.
Explanation:
M1 and M2 are the masses of two. objects exerting the force on each other, and R is the distance. between their centers.
3. How much heat (in joules) is needed to raise the temperature of 355 g of ethanol I
(c = 2.4 J/gºC) by 63°C?
q=mcAT
Answer:
53676 J
Explanation:
m = 355 g
c = 2.4 J/gºC
ΔT = 63°C
q = mcΔT
= (355)(2.4)(63)
= 53676 J
The amount of heat is 53676J to raise the temperature of 355 g of ethanol.
What is temperature?Temperature is a measurement of the amount of energy of the atoms in a system or a physical quantity that expresses hot and cold.
What is heat?Heat is energy that is transmitted through one body to some other due to a temperature differential. When two bodies of different temperatures come together, energy can be transferred (heat flows) from the hotter to the colder.
It can be determined by the formula:
q =mCΔT.
where, q is heat, m is mass , C is and T is temperature.
Calculation of heat is shown below:
It is given that, mass of ethanol = 355 g, c = [tex]2.4 J/g^{0}[/tex] C, ΔT. = [tex]63^{0} C[/tex]
Now, put the values of given data in heat formula:
q =mCΔT
= 355×2.4×63
=53676J.
Therefore, the amount of heat will be 53676J to raise the temperature of 355 g of ethanol
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.?lkikjjjmmjj
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Answer:
ertyuioekgdctifrofy?
Explanation:
(part 1 of 3) Copper reacts with silver nitrate through a single replacement. If 1.29 g of silver are produced from the reaction, how much copper(II) nitrate is also produced? Answer in units of mol. (part 2 of 3) How much Cu is required in this reaction? Answer in units of mol. (part 3 of 3) 1.0 points How much AgNO3 is required in this reaction? Answer in units of mol.
Answer:
See explanation.
Explanation:
Hello there!
In this case, according to the described chemical reaction, we first write the corresponding equation to obtain:
[tex]Cu+2AgNO_3\rightarrow 2Ag+Cu(NO_3)_2[/tex]
Thus, we proceed as follows:
Part 1 of 3: here, since the molar mass of silver and copper (II) nitrate are 107.87 and 187.55 g/mol respectively, and the mole ratio of the former to the latter is 2:1, we can set up the following stoichiometric expression:
[tex]m_{Cu(NO_3)_2}=1.29gAg*\frac{1molAg}{107.87gAg}*\frac{1molCu(NO_3)_2}{2molAg}*\frac{187.55gCu(NO_3)_2}{1molCu(NO_3)_2} \\\\m_{Cu(NO_3)_2}=1.12gCu(NO_3)_2[/tex]
Part 2 of 3: here, the molar mass of copper is 63.55 g/mol and the mole ratio of silver to copper is 2:1, the mass of the former that was used to start the reaction was:
[tex]m_{Cu}=1.29gAg*\frac{1molAg}{107.87gAg}*\frac{1molCu}{2molAg}*\frac{63.55gCu)_2}{1molCu} \\\\m_{Cu}=0.380gCu[/tex]
Part 3 of 3: here, the molar mass of silver nitrate is 169.87 g/mol and their mole ratio 2:2, thus, the mass of initial silver nitrate is:
[tex]m_{AgNO_3}=1.29gAg*\frac{1molAg}{107.87gAg}*\frac{2molAgNO_3}{2molAg}*\frac{169.87gAgNO_3}{1molAgNO_3} \\\\m_{AgNO_3}=2.03gAgNO_3[/tex]
Best regards!
How many grams of sodium chloride could be produced from 41.3 L of chlorine gas?
Answer:
The grams of sodium chloride that will be made is 292.5 g. calculation. 2Na + Cl₂ → 2NaCl. step 1: calculate the moles of Na. moles = mass/molar mass. From periodic table the molar mass of Na = 23 g/mol. moles = 115 g/23 g / mol = 5 moles. Step 2 : use the mole ratio to determine the moles of NaCl. Na:NaCl is 2:2 = 1:1 therefore the moles of NaCl is also = 5 moles.
Explanation:
We know sodium is a very active metal and chlorine is also a very reactive non-metal. Usually, metals like to eliminate electrons and non-metals such as halogens like to accept electrons. Sodium readily eliminate its last shell electrons become Na+ cation and chlorine accepts that electron to form Cl-anion.
Research online to find out what the acidity of the rainfall is where you live. If you live in an area which is affected by acid rain, where do you think it is coming from and why?
Write 3-5 paragraphs describing the effects.
If you do not live an area effected by acid rain, choose another city that is effected by acid rain.
Answer & Explanation: Acid rain occurs when sulfur dioxide and nitrogen oxide are released into the air to create a chemical reaction. When the two mix in the air (oxygen), they will get into the water and mix with other pollutants in the air, making acid rain.
Answer:
What is acid rain? Acid rain occurs when sulfur dioxide and nitrogen oxide are released into the air to create a chemical reaction. When the two mix in the air (oxygen), they will get into the water and mix with other pollutants in the air, making acid rain.
What causes acid rain the most? It can be caused by useing nonrenewable resources. Which inclues coal, oil, ect.
What effects can acid rain have? It causes respiratory issues in animals and humans. When acid rain falls down and flows into the rivers and ponds it affects the aquatic ecosystem. It alters the chemical composition of the water, to a form which is actually harmful to the aquatic ecosystem to survive and causes water pollution which can harm our fresh water supply.
Proponer una propuesta de acción contra la degradación del suelo basándose en tres tipos de argumentos de fuentes confiables
Answer:
Cobertura vegetal, mantillo y piedra triturada.
Explicación:
Para evitar la degradación del suelo, debemos plantar una cubierta vegetal perenne que proteja el suelo de la erosión del viento y el agua sujetándolo firmemente con sus raíces. El mantillo también se usa para prevenir la erosión del suelo. En aquellas zonas donde la cobertura vegetal no es posible, tenemos que utilizar piedras trituradas para cubrir el suelo con el fin de evitar el contacto directo con el viento. Entonces, estas acciones pueden prevenir la degradación del suelo y mantener el suelo en su estado original.
In the lab you take 50.0 mL of a 40.0 M NaOH solution and then add water to it until it reaches the 500.0 mL mark of the flask. What is the concentration of the new solution?
Answer:
4.00M NaOH
Explanation:
A 50-ml amount of 40.0M NaOH contains
(40.0 mol NaOH/1 L)×(0.0500L) = 2.00 mol NaOH
Adding enough water to make a 500.0 mL NaOH solution, the new concentration of this solution is
2.00 mol NaOH/0.5000 L = 4.00M NaOH
What does temperature surround when the kinetic energy is moving fast ?
When the average kinetic energy of its particles increases, the object's thermal energy increases. Therefore, the thermal energy of an object increases as its temperature increases.
In chemistry, we define the temperature of a substance as the average kinetic energy of all the atoms or molecules of that substance. Not all of the particles of a substance have the same kinetic energy. At any given time, the kinetic energy of the particles can be represented by a distribution.
In physics, temperature is defined as the average kinetic energy of the particles in an object. ... When particles move more quickly, temperature is higher and an object feels warmer. When particles move more slowly, temperature is lower and an object feels cooler.
乁(ᵔヮᵔ)ㄏ
Balance :FeCl3 + __Ca(OH)2 → ___ Fe(OH)3 + __ CaCl2
Mrs. Borunda has a sample of oxygen gas that occupies a volume of 600 L at 400 atm pressure. What will the pressure be if she increases the volume to
800 L?
300 atm
450 atm
540 atm
250 atm
Answer:
P₂ = 300 atm
Explanation:
Given that,
Initial volume, V₁ = 600 L
Initial pressure, P₁ = 400 atm
We need to find the pressure if the volume is 800 L.
We know that the relation between pressure and volume is given by :
[tex]P\propto \dfrac{1}{V}\\\\\dfrac{P_1}{P_2}=\dfrac{V_2}{V_1}\\\\P_2=\dfrac{P_1V_1}{V_2}\\\\P_2=\dfrac{600\times 400}{800}\\\\P_2=300\ atm[/tex]
So, the new pressure is equal to 300 atm.
Which results in a chemical change?
A. A teacher feels a rough cloth
B. A student colors a blue paper
C. A student smells a flower
D. A teacher lights a candle
Answer:
D. I am pretty sure
Explanation:
:))))))
Answer:
D. A teacher lights a candle
Explanation:
is sodium potassium nitrate exo or endo?
endothermic
Explanation:
I believe it's an endothermic but I'm not all too sure
Answer:
Pottasium nitrate is highly exothermic!However the dissolution of sodium nitrate in water is endothermic. Heat is absorbed during process.
Many electrical power plants use fossil fuels, a non-renewable resource to produce electricity?
A:Solar energy can be used to push energy along power lines
B:Wind energy can be used to cool overheated electrical lines
C:Moving water can be used to carry electricity to homes and businesses
D:Biomass can be used to generate heat that can be converted into electricity
Answer:
Explanation:
Thermal Power Plants generate electricity by converting heat into electricity, essentially by burning a fuel. ... A coal power plant works in much the same way, but instead of a nuclear reactor heating water to make steam, the heat from the burning coal powers a steam turbine
Answer:
Solar energy can be used to push energy along power lines.
Explanation:
Im Might be wrong, might have to fact check it but im taking the test now so :)
Use the drop-down menus to rank the boiling points of the following hydrocarbons. Use a "1" to indicate
the compound with the lowest boiling point.
Answer:
1. 4
2. 2
3. 3
4. 1
Explanation: just did it on edge 2021
Answer:
one.) 4
two.) 2
three.) 3
four.) 1
What molar concentration (molarity) results when 1.28 L of 14.38 M HCl is diluted to 9.45 L of water?
Answer:
1.95 M
Explanation:
Molarity is a measure of the molar concentration of a substance (solution). In relation to the volume, it is calculated using the formula as follows;
C1V1 = C2V2
Where;
C1 = initial concentration (M)
C2 = final concentration (M)
V1 = initial volume (L)
V2 = final volume (L)
According to the provided information in this question;
C1 = 14.38 M
C2 = ?
V1 = 1.28 L
V2 = 9.45 L
Using C1V1 = C2V2
14.38 × 1.28 = C2 × 9.45
18.4064 = 9.45 C2
C2 = 18.4064 ÷ 9.45
C2= 1.95 M
Please help!!
All fake answers get reported immediately. Yes, I am a girl -_-
Answer:
1.)C₃H₈O
2)OH
3.)1-propanol
1.) C4H8O
2.) C2H6O or CH3CH2OH
3.)Ethanol
Explanation:
Hope this help
They have one electron in the outermost electron shell. These are very active metals and easily lose their single valence electron.
Answer: The statement they have one electron in the outermost electron shell. These are very active metals and easily lose their single valence electron, is true.
Explanation:
Metals are the species which tend to lose electron(s) to acquire stable noble gas configuration.
Elements which tend to lose a single electron in order to acquire stability are active in nature because losing one electron is more easy as compared to losing two or more electrons.
For example, atomic number of sodium is 11 and its electronic distribution is 2, 8, 1.
Since, it contains only one valence electron and by losing it sodium will acquire stability. Hence, sodium is a very reactive metal.
Thus, we can conclude that the statement they have one electron in the outermost electron shell. These are very active metals and easily lose their single valence electron, is true.
The table below shows the height of a ball x seconds after being kicked.
A 2-column table with 5 rows. The first column is labeled time (seconds) with entries 0, 0.5, 1, 1.5, 2, 2.5, 3. The second column is labeled height (feet) with entries 0, 35, 65, 85, 95, 100, 95.
What values, rounded to the nearest whole number, complete the quadratic regression equation that models the data?
f(x) =
x2 +
x + 0
Based on the regression equation and rounded to the nearest whole number, what is the estimated height after 0.25 seconds?
feet
Answer:
-16
81
19
Explanation:
The quadratic regression equation is [tex]y = -16x^2 +81x[/tex], and the estimated height in 0.25 seconds is 19 feet
What are regression equations?Regression equations are used to determine the relationship between sets of data
The dataset is given as:
Time (seconds) Height (feet)
0 0
0.5 35
1 65
1.5 85
2 95
2.5 100
3 95
To determine the quadratic regression equation, we make use of a graphing calculator.
From the graphing calculator, we have the following calculation summary:
a = -16.429
b = 81.071
c = -0.357
A quadratic regression equation, is represented as:
[tex]y = ax^2 + bx + c[/tex]
So, we have:
[tex]y = -16.429x^2 +81.071x -0.357[/tex]
Approximate
[tex]y = -16x^2 +81x[/tex]
The estimated height in 0.25 seconds is:
[tex]y = -16* 0.25^2 +81 * 0.25[/tex]
[tex]y = 19.25\\[/tex]
Approximate
[tex]y = 19[/tex]
Hence, the estimated height in 0.25 seconds is 19 feet
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Answer:
See Explanation
Explanation:
According to Avogadro's law;
V1/n1 = V2/n2
V1 = 5.0 L
n1 = 15.0 moles
V2= ?
n2 = 30.0 moles
V1n2 = V2n1
V2 = 5 * 30/15
V2 = 10 L
2) 1 mole of N2 occupies 22.4 L
3 moles of N2 occupies 3 * 22.4/1 = 67.2 L
3) 1 mole of O2 occupies 22.4 L
x moles occupies 201.6 L
x = 1 mole* 201.6 L/22.4 L
x = 9 moles
4) Density of a gas = mass/volume
Density of a gas = 39.95 g/22.4 L = 1.78 g/L
Balance the following chemical equation. Choose the correct coefficients in the balanced equation in order. *
4, 3, 2
2, 4, 2
1, 1, 1
3, 2, 3
Answer: 4,3,2
Explanation:
If there were 11.25 moles of solute in a 6.0M solution, what volume would it have?
Answer:
1.875 dm^3
Explanation:
M = moles of solute ÷ volume of solution
M =11.25 x 6
= 1.875 dm^3
2L is the correct answer .
HOW TO CALCULATE ??
Given : moles of solute(n) = 11.25Molarity (M) = 6
To Find : Volume of the solution (v) = ?Key concept : [tex]M=\frac{n}{V(inL)}[/tex]On puting values and solving we get , V = 1.875 L ≈ 2L
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The decomposition of potassium chlorate, KClO3, is used as a source of oxygen in labs.
How many moles of potassium chlorate are needed to produce 6.83 moles of oxygen gas?
Reaction takes place is
2KClO3 --> 2KCl + 3O2
from above equation 2 moles of potassium chlorate is forming 3 moles of Oxygen gas.
now given 6.83 moles of oxygen and moles of potassium chlorate is missing,
consider x moles of potassium chlorate are needed to form 6.83 moles of oxygen
from above condition, .
3 》》》》2
x 》》》》6.83
3/x = 2/6.83
x = 3×6.83/2
x= 10.245
Answer- 10.245 moles of potassium chlorate are needed to produce 6.83 moles of oxygen gas.
All of the following are empirical formulas except:
C2H3O2
C6H6
CHO2
CH2O
calculate the mass of 0.8 moles of Fe(NO3)3 (H2O)9
Answer:
Molar mass of (Fe(NO3)3)(H2O)9 is 403.9972 g/mole
Explanation:
the formula to find the mass of moles
Worked Example: molar mass = mass ÷ moles (M=m/n) Calculate the molar mass of a pure substance if 1.75 moles of the substance has a mass of 29.79 g.
i think it help you
How many moles are in 100 g of K3PO4 ?