Answer:
[tex]8.97x10^{22}molecules C_3H_8[/tex]
Explanation:
Hello there!
In this case, according to the given chemical reaction and the fact that 22.4 L of a gas are occupied by 1 mol at standard pressure and temperature conditions, it will be possible for us to calculate the number of molecules of propane, by using the Avogadro's number, the 1:3 mole ratio with carbon dioxide and the aforementioned volume-mole ratio to obtain:
[tex]10.01LCO_2*\frac{1molCO_2}{22.4LCO_2}*\frac{1molC_3H_8 }{3molCO_2} *\frac{6.022x10^{23}molec\ C_3H_8}{1molC_3H_8} \\\\=8.97x10^{22}molecules C_3H_8[/tex]
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A sample of carbon monoxide at 57 degrees Celsius and under 0.75 atm occupies 85.3 liters of space. What mass of carbon monoxide is present in the sample?
Which element is not found in the skeleton of amino acids?
Answer:
Serine. Serine is non-essential amino acid supplied from food or synthesized by the body from a number of metabolites, including glycine. Serine is found in soybeans, nuts (especially peanuts, almonds, and walnuts), eggs, chickpeas, lentils, meat, and fish (especially shellfish).
Explanation:
1. In a chemical reaction
a. the mass of the reactants equals the mass of the products.
b. the mass of the products is greater than the mass of reactants.
c.the number of atoms in the reactants and products must change.
d. energy as heat must be added to the reactants.
Answer:
A
Explanation:
Law of conservation of matter
Write the expression for K in terms of the solubility, s, for each salt, when dissolved in water. nickel(II) cyanide silver hydroxide
Answer:
[tex]Ksp=[Ni^{2+}][CN^-]^2\\\\Ksp=[Ag^+][OH^-][/tex]
Explanation:
Hello there!.
In this case, for this equilibrium problem, it turns out firstly necessary to write the chemical equations for the solubilization of both nickel (II) cyanide and silver hydroxide as shown below:
[tex]Ni(CN)_2(s)\rightarrow Ni^{2+}(aq)+2CN^-\\\\AgOH(s)\rightarrow Ag^+(aq)+OH^-[/tex]
Thus, by means of the law of mass action we set up these equilibrium expressions as shown below:
[tex]Ksp=[Ni^{2+}][CN^-]^2\\\\Ksp=[Ag^+][OH^-][/tex]
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A balloon is filled with 3.50 L of water at 24.0°C. What is the volume of the water at 307 K?
Answer:
what is the volume of the water at 307 k?
How many moles of aluminum oxide (Al2O3) will be produced if 1.5 mole of aluminum (AI) reacts with oxygen? Input a numerical answer only. 4Al + 302 ---> 2Al2O3
Explanation:
The number of moles of Al2O3 formed is approximately 4.25 moles. Second find the limiting reactant. Since O2 has less value that is 2.126 than Al that is 2.287, O2 is the limiting reactant in this reaction.
Which organic compound listed below does not have a carbonyl group ?
A. Aldehyde
B. Ketone
C. Ethers
D. Protein
E. Ester
F. Amides
How can parents and other caregivers help children learn good nutrition in the home?
Answer:
Healthy Eating — Make sure your child's caregivers offer healthy snacks and meals. Consider other influences. Just as they do for you, your children's friends and the media can also affect healthy choices. Some TV, online, and other ads try to persuade children to consume high-fat foods and sugary drinks.
Help plz:)))I’ll mark u Brainliest
Answer:
11690J
Explanation:
Use formula Q = mL
where:
Q = Energy (J)
m = Mass (g)
L = Latent heat of fusion for water (J/g) = 344J/g
Therefore:
Q = 35.0 x 344
Q = 11690J
CO2 + H20 - H2CO3
The reaction above is classified as
a combustion reaction
b double displacement
c synthesis
d decomposition
e single displacement
Answer:
the correct answer is option A
Inquiry Extension Consider a reaction that occurs between solid potassium and chlorine gas. If you start with an initial mass of 15.20 g K, and an initial mass of 2.830 g Cl2, calculate which reactant is limiting. Explain how to determine how much more of the limiting reactant would be needed to completely consume the excess reactant. Verify your explanation with an example
The 3.13 g of K would be needed to completely react with the remaining [tex]Cl_2[/tex].
To determine which reactant is limiting, we need to calculate the amount of product that can be formed from each reactant and compare them. The reactant that produces less product is the limiting reactant, since the reaction cannot proceed further once it is consumed.
The balanced chemical equation for the reaction between solid potassium and chlorine gas is:
2 K(s) + [tex]Cl_2[/tex](g) -> 2 KCl(s)
From the equation, we can see that 2 moles of K react with 1 mole of [tex]Cl_2[/tex] to form 2 moles of KCl.
First, we need to convert the masses of K and [tex]Cl_2[/tex] into moles:
moles of K = 15.20 g / 39.10 g/mol = 0.388 mol
moles of [tex]Cl_2[/tex] = 2.830 g / 70.90 g/mol = 0.040 mol
Now, we can use the mole ratio from the balanced equation to calculate the theoretical yield of KCl from each reactant:
Theoretical yield of KCl from K: 0.388 mol K x (2 mol KCl / 2 mol K) = 0.388 mol KCl
Theoretical yield of KCl from [tex]Cl_2[/tex]: 0.040 mol [tex]Cl_2[/tex] x (2 mol KCl / 1 mol [tex]Cl_2[/tex]) = 0.080 mol KCl
We can see that the theoretical yield of KCl from K is 0.388 mol, while the theoretical yield of KCl from [tex]Cl_2[/tex] is 0.080 mol. Therefore, the limiting reactant is [tex]Cl_2[/tex], since it produces less product.
To determine how much more of the limiting reactant would be needed to completely consume the excess reactant, we can use the stoichiometry of the balanced equation.
We know that 1 mole of [tex]Cl_2[/tex] reacts with 2 moles of K to produce 2 moles of KCl. Therefore, the amount of additional K needed to react with the remaining [tex]Cl_2[/tex] can be calculated as follows:
moles of K needed = 0.040 mol [tex]Cl_2[/tex] x (2 mol K / 1 mol [tex]Cl_2[/tex])
= 0.080 mol K
This means that 0.080 moles of K would be needed to completely consume the remaining [tex]Cl_2[/tex]. We can convert this to a mass by multiplying by the molar mass of K:
mass of K needed = 0.080 mol K x 39.10 g/mol
= 3.13 g K
Therefore, The 3.13 g of K would be needed to completely react with the remaining.
Example verification:
Suppose we had an additional 0.50 g of [tex]Cl_2[/tex] in the reaction. Would all of the K be consumed, or would there still be excess K?
Moles of additional [tex]Cl_2[/tex] = mass of [tex]Cl_2[/tex] / molar mass of [tex]Cl_2[/tex]
Moles of additional [tex]Cl_2[/tex] = 0.50 g / 70.90 g/mol
Moles of additional [tex]Cl_2[/tex] = 0.0070 mol
The theoretical yield of KCl that can be formed from the additional [tex]Cl_2[/tex] is:
0.0070 mol [tex]Cl_2[/tex] x (2 mol KCl / 1 mol [tex]Cl_2[/tex]) x (74.55 g KCl / 1 mol KCl) = 1.04 g KCl
Therefore, the total amount of KCl that can be formed from all of the [tex]Cl_2[/tex] is:
5.95 g + 1.04 g = 6.99 g
The amount of K that would be needed to completely consume all of the [tex]Cl_2[/tex].
Learn more about Solid Potassium at
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Anyone knows gunpowder formula?
Calculate the volume of a gas sample at 273 K and 101.325 kPa if 455 cm of the gas are
collected at 36.0 °C and 97.0 kPa. What is the name of the gas law used in this calculation?
Answer:
The name of the game law used is called the Charles Law
Can someone help me out, thanks
Answer:
See EXPLANATION
Explanation:
We must bear in mind that in balancing chemical reaction equations, the number of atoms of each element on the right hand side must be the same as the number of atoms of the same element on the left hand side of the reaction equation. This follows from the law of conservation of mass.
Based on this;
There are two oxygen atoms on the left hand side of the reaction equation, thus total mass of oxygen = 2 * 16 amu = 32 amu
There are two oxygen atoms on the product side of the reaction equation, thus the total mass of oxygen = 2 * 16 amu = 32 amu
Calculate mL (4 sf) of 0.7500 M sodium hydroxide required to neutralize 35.00 mL of 0.7500 M phosphoric acid. Please input number as whole number not scientific notation
Answer:
105mL of 0.7500M of NaOH are required
Explanation:
Phosphoric acid, H₃PO₄, reacts with sodium hydroxide, NaOH, as follows:
H₃PO₄ + 3 NaOH → Na₃PO₄ + 3H₂O
Where 1 mole of phosphoric acid reacts with 3 moles of NaOH
To solve this question we must find, as first, the moles of H3PO4 that react. Using the chemical equation we can find the moles of NaOH required to neutralize this acid. And, with its concentration, we can find the volume oof NaOH required:
Moles H3PO4:
35.00mL = 0.03500L * (0.7500mol / L) = 0.2625 moles H3PO4
Moles NaOH:
0.2625 moles H3PO4 * (3mol NaOH / 1mol H3PO4) = 0.07875 moles NaOH
Volume NaOH:
0.07875 moles NaOH * (1L / 0.7500mol) = 0.105L =
105mL of 0.7500M of NaOH are required0.41g of neon is held in a 200. mL container at 11 °C. Calculate the pressure in atm.
Answer:
2.39 atm
Explanation:
We'll begin by calculating the number of mole in 0.41 g of neon (Ne). This can be obtained as follow:
Mass of Ne = 0.41 g
Molar mass of Ne = 20 g/mol
Mole of Ne =.?
Mole = mass / molar mass
Mole of Ne = 0.41 / 20
Mole of Ne = 0.0205 mole
Next we shall convert 200 mL to L.
1000 mL = 1 L
Therefore,
200 mL = 200 mL × 1 L / 1000 mL
200 mL = 0.2 L
Next, we shall convert 11 °C to Kelvin temperature.
T(K) = T(°C) + 273
T(°C) = 11 °C
T(K) = 11 + 273
T (K) = 284 K
Finally, we shall determine the pressure. This can be obtained as follow:
Mole of Ne (n) = 0.0205 mole
Volume (V) = 0.2 L
Temperature (T) = 284 K
Gas constant (R) = 0.0821 atm.L/Kmol
Pressure (P) =?
PV = nRT
P × 0.2 = 0.0205 × 0.0821 × 284
P × 0.2 = 0.4779862
Divide both side by 0.2
P = 0.4779862 / 0.2
P = 2.49 atm
Therefore, the pressure of the gas is 2.39 atm
A chemist must dilute 61.9 mL of 548. nM aqueous sodium carbonate (Na2CO3) solution until the concentration falls to 484. nM . He'll do this by adding distilled water to the solution until it reaches a certain final volume. Calculate this final volume, in milliliters. Round your answer to 3 significant digits.
Answer:
The final volume will be "70.08 mL".
Explanation:
The given values are:
Molar mass,
M1 = 548 nM
or,
= [tex]5.48\times 10^{-7} \ M[/tex]
M2 = 484 nM
or,
= [tex]4.84\times 10^{-7} \ M[/tex]
Volume,
V1 = 61.9 mL
V1 = ?
By using the expression, we get
⇒ [tex]M1\times V1=M2\times V2[/tex]
or,
⇒ [tex]V2=\frac{M1\times V1}{M2}[/tex]
By substituting the values, we get
[tex]=\frac{5.48\times 10^{-7}\times 61.9}{4.84\times 10^{-7}}[/tex]
[tex]=\frac{339.212}{4.84}[/tex]
[tex]=70.08 \ mL[/tex]
In the energy profile of a reaction, the species that exists at the maximum on the curve is called the ________. In the energy profile of a reaction, the species that exists at the maximum on the curve is called the ________. atomic state activated complex activation energy enthalpy of reaction product
Answer:
The activated complex
Explanation:
The activated complex are the species that exists maximum in every energy profile of a reaction.
Activated complex is nothing but an intermediate state of reactants formed during its conversion from a reactant to product state in coarse of reaction.
The activated complex is formed at the maximum energy level in the reaction path. And this difference between energy of the activated complex and the energy of the reactants is only known as activation energy
A common asteroid is in the first photograph. Haley's Comet is in the second photograph. What can be inferred about comets and asteroids? Answer A Both have orbits around the Earth that are ellipses B Both are miniature planets because they orbit the Sun C Both could be planetary fragments from the beginnings of solar system formation D Both are made of rock, ice, and solar dust from the beginning of the solar system
Answer:
D Both are made of rock ,ice and solar dust from the beginning of the solar system
Answer:
The answer is D
Explanation:
Dau coroana va roggg!!!!!!
Answer:
it's very easy and simple answer u can't do it
If we have 0.06 moles of HCI
How many grams of magnesium metal is that?
Answer:
1.44 g
Explanation:
From the question given above, the following data were obtained:
Number of mole of HCl = 0.06 mole
Mass of Mg =?
From the question given above, we discovered the number of mole of HCl is equivalent to the number of mole of Mg. Thus,
Number of mole of Mg = number of mole of HCl
Number of mole of Mg = 0.06 mole
Finally, we shall determine the mass of Mg. This can be obtained as follow:
Number of mole of Mg = 0.06 mole
Molar mass of Mg = 24 g/mol
Mass of Mg =?
Mass = mole × molar mass
Mass of Mg = 0.06 × 24
Mass of Mg = 1.44 g
Therefore, the mass of magnesium is 1.44 g
The initial concentration of a solution of NaOH is 5.0 M. What volume of the concentrated stock solution is needed to make 200 mL of .02 M solution? (YOU MUST INCLUDE UNITS IN YOUR ANSWER) *
Answer:
0.8 mL
Explanation:
Use the formula M1V1 = M2V2.
Plug the values in.
5(V1) = 0.02(200)
5V1 = 4
V1 = 0.8 mL
Hope this is right, correct me if I'm wrong!
when rolling a number cube 500 times, how many times you expect to get a 3?
Answer:
[tex]\frac{250}{3}[/tex]
Explanation:
you can expect to get a 3 (theoretically) 1 time every 6 times you roll. A 1/6 chance.
Here's the equation:
[tex]\frac{1}{6} =\frac{x}{500}[/tex]
cross multiply (i think that's what it is called)
500=6x
divide by 6 on both sides:
x=[tex]\frac{250}{3}[/tex] or approx 83 times.
Hope this helps! Lmk if u have more questions <3
how many molecules in 400g of acetic acid
Answer:chemical formula of acetic acid is or
so, molecular mass of acetic acid = 2 × atomic mass of C + 4 × atomic mass of H + 2 × atomic mass of O
= 2 × 12 + 4 × 1 + 2 × 16
= 24 + 4 + 32
= 60g/mol
given mass of acetic acid = 22g
so, no of moles of acetic acid = given mass/molecular mass
= 22/60 ≈ 0.367
so, number of moles of acetic acid is 0.367mol
number of molecules in 0.367 mol of acetic acid = 6.022 × 10²³ × 0.367
= 2.21 × 10²³
Explanation:
An experimental measurement was taken of 10.4mL and the actual measurement was 9.7mL. What is the percent error?
Answer:
13%
Explanation:
Why is the regression equation not exactly y = 100 • 0.5n?
Answer:
Radioactive decay is a random event.
Explanation:
on edge
Answer:
Radioactive decay is a random event.
Explanation:
Edge 2020
-4. A student learns that all of the particles within an object possess kinetic energy. Based on this fact,
the student can conclude that all of the particles in the object-
A. Contains the same atoms. B. Are hotter than their surroundings C.Are in motion. D. Are covalently bonded
Answer:
C
Explanation:
The correct option is option C. which is "are in motion".
All the particles inside an object have kinetic energy, which implies that the particles are moving. Kinetic energy is the force that drives an object's or its constituent parts in motion. As a result, it can be inferred from this fact that the object's particles are in motion.
Options A, B, and D are not necessarily true based on the given information. The fact that particles have kinetic energy does not imply that they contain the same atoms (option A), are hotter than their surroundings (option B), or are covalently bonded (option D). These characteristics are not directly related to the presence of kinetic energy in particles.
Therefore, option c is the correct option.
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A balloon is inflated to a volume of 8.0 L on a day when the atmospheric pressure is 1.013 bar . The next day, a storm front arrives, and the atmospheric pressure drops to 0.968 bar . Assuming the temperature remains constant, what is the new volume of the balloon, in liters
Answer:
[tex]V_2=8.4L[/tex]
Explanation:
Hello there!
In this case, according to the definition of the Boyle's law, which describes de pressure-volume behavior as an inversely proportional relationship, it is possible for us to write:
[tex]P_1V_1=P_2V_2[/tex]
Thus, since we are given the initial pressure and temperature, and the final pressure, we are able to calculate the final volume as shown below:
[tex]baV_2=\frac{P_1V_1}{P_2}\\\\V_2=\frac{8.0L*1.013bar}{ 0.968bar}\\\\V_2=8.4L[/tex]
Regards!
Would you rather
Eat sweet foods for the rest of you're life?
or
Eat salty foods for the rest of you're life?
Answer:
Salty
Explanation:
Becuase sugar isn't good for you. Unless the sweet foods are fruits but like deserted aren't good for you
Answer:
Salty
Explanation:
Too sweet foods would just crush you, but with salt at least you can drink water :)
What determines the brightness of a light wave?
Answer: The brightness of light is related to intensity or the amount of light an object emits or reflects. Brightness depends on light wave amplitude, the height of light waves. Brightness is also somewhat influenced by wavelength.
Explanation: