The sequences were already outlined therefore she didn't have any difficulty in choosing between math and poetry.
What is a sequence?A sequence is an orderly arrangement of events or objects. When objects or events are arranged in a sequence, decision making becomes much easier.
For the task at hand, since the sequences were already outlined, then she didn't have any difficulty in choosing between math and poetry.
Learn more about sequence: https://brainly.com/question/21961097
Answer:
to solve an equation
What is the best reason for carbon dioxide existing as a gas at standard temperature and pressure?
A)
Carbon dioxide molecules have the same spin within each of their orbitals.
As a result, the carbon dioxide molecules are less attracted to each other
when compared to the intramolecular bonds.
B)
Coulomb's law shows that the interaction between protons and electrons
within the atoms of each carbon dioxide molecule is significantly stronger
than the proton-electron interaction between each molecule.
C)
The entropy of carbon dioxide is much greater than the entropy of its
surroundings.
D)
Carbon dioxide has too much internal energy that the molecule-molecule
interaction cannot keep the molecules together.
Isoniazid is used in the treatment of tuberculosis and multiple sclerosis. Identify each lone pair as either localized or delocalized. Justify your answer in each case.
Answer:
Please find the complete question and its solution in the attached file:
Explanation:
Besides filament-based detectors, what else are sometimes used to find flammable liquids?
A. Radar detectors
B. Dogs
C. Chemical sprays
D. Carbon monoxide detectors
Answer:
D
Explanation:
can u be my friend i'm new
Besides filament-based detectors, sometimes used to find flammable liquids are carbon monoxide detectors. Hence option D is correct.
What are detector?Detector are defined as a tool for detecting the presence of radioactivity or electromagnetic waves. Since 1881, metal detectors have been employed for diagnostic purposes. They have been used to identify a wide range of foreign bodies and medical equipment, including bullets, intraocular metallic pieces, ingested coins, and other foreign things. Detecting metallic things quickly may help with diagnosis or therapy.
Carbon monoxide detectors are defined as a tool that looks for carbon monoxide (CO) gas to stop carbon monoxide poisoning. The purpose of CO alarms is to alert you to any unexpected CO buildup in your home. These greater levels of CO may be brought on by fuel-burning appliances that are not properly maintained, installed, or operated, by fireplaces or appliances that draft backward, or by idling cars in garages.
Thus, besides filament-based detectors, sometimes used to find flammable liquids are carbon monoxide detectors. Hence option D is correct.
To learn more about detector, refer to the link below:
https://brainly.com/question/13155639
#SPJ2
what does it mean to count atoms
When you count atoms, remember to multiply the coefficient number and the subscript number to find the number of atoms of that element. Examples: ▪ 2H2O. Number of atoms Number of molecules = 2. H-4.
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
An example of a greenhouse gas is
A. Oxygen
B. Nitrogen
C. Carbon dioxide
D. Clouds
E. Bad breathe
Answer:
oxygen
Explanation:
oxygen is very good for the health of every living thing
Answer:
C carbon dioxide
Explanation:
its bad
1. Calculation of equilibrium concentrations from Ka
Calculate the pH of a 1.0 M Acetic acid solution, using approximations. Ka = 1.8 x 10^-5
HC2H3O2+H2O⇆H3O(+)+C2H3O2(-)
Initial:
Change
at Equilibrium:
2. Calculation of species concentrations from Ka, using the quadratic formula
Calculate the pH of a 0.000010 M Acetic acid solution
HC2H3O2+H2O⇆H3O(+)+C2H3O2(-)
Initial:
Change:
at Equilibrium:
3. Calculation of Ka from the pH of a weak acid solution
Calculate the Ka of HNO2 if a 0.10 M HNO2 solution has a pH of 2.187
Initial:
Change:
at Equilibrium:
4. Calculation of Ka from the percent ionization
Calculate the Ka of Glycine if a 0.10 M Glycine solution is 4.1 x 10^-3 ionized
HGly+H2O⇆H3O(+)+Gly(-)
Initial:
Change:
at Equilibrium:
When two substances at room temperature are combined, the product feels HOT. What
kind of reaction is this?
Answer:
The correct answer is - exothermic reaction.
Explanation:
Exothermic reactions are the reaction that releases energy into the surrounding and does not require energy to take place due to the total energy of the reactants the total energy of the products is more than tthe total energy of the products. It releases energy usually as heat or light with the product.
In the given condition of room temperature mixing two substance produces hot products, fits with the explanation given above, therefore, it is an exothermic reaction.
Titrating HCl with NaOH is an acid-base reaction. This is an example of _________ reaction: HCl (aq) + NaOH (aq) → H2O (l) + NaCl (aq)
Answer:
Neutralization reaction
Which describes the sequence of events of the development of the universe?
big bang → star and galaxy formation → expansion and cooling → atom formation → continuation of expansion and cooling
atom formation → star and galaxy formation → expansion and cooling → continuation of expansion and cooling → big bang
atom formation → big bang → star and galaxy formation → expansion and cooling → continuation of expansion and cooling
big bang → expansion and cooling → atom formation → star and galaxy formation → continuation of expansion and cooling
Answer:
big bang → expansion and cooling → atom formation → star and galaxy formation → continuation of expansion and cooling
Explanation:
Answer:
D: big bang → expansion and cooling → atom formation → star and galaxy formation → continuation of expansion and cooling
Explanation:
i just took the quiz and it was right! :)
which ecosystem is the least stable
Answer:
cornfield
Explanation:
How old are you?
0-12
12-17
17-25
69+
I don't know
Answer:
I don't know
Explanation:
that how old I am
What do greenhouse gases do on Earth?
Answer:
It holds heat from the sun close to Earth.
Explanation:
Hope this helps and have a great day. :)
At 27.0°C, the volume of a gas is 630 L. At the same pressure, its volume is 92,0 mL at a temperature of
Answer:
–272.96 °C
Explanation:
From the question given above, the following data were obtained:
Initial temperature (T₁) = 27.0 °C
Initial volume (V₁) = 630 L.
Final volume (V₂) = 92.0 mL
Final temperature (T₂) =?
Next, we shall convert 27.0 °C to Kelvin temperature. This can be obtained as follow:
T(K) = T(°C) + 273
Initial temperature (T₁) = 27.0 °C
Initial temperature (T₁) = 27.0 °C + 273
Initial temperature (T₁) = 300 K
Next, we shall convert 92.0 mL to L. This can be obtained as follow:
1000 mL = 1 L
Therefore,
92 mL = 92 mL × 1 L / 1000 mL
92 mL = 0.092 L
Next, we shall determine the final temperature.
Initial temperature (T₁) = 300 K
Initial volume (V₁) = 630 L.
Final volume (V₂) = 0.092 L
Final temperature (T₂) =?
V₁ / T₁ = V₂ / T₂
630 / 300 = 0.092 / T₂
2.1 = 0.092 / T₂
Cross multiply
2.1 × T₂ = 0.092
Divide both side by 2.1
T₂ = 0.092 / 2.1
T₂ = 0.04 K
Finally, we shall convert 0.04 K to celsius temperature. This can be obtained as follow:
T(°C) = T(K) – 273
Final temperature (T₂) = 0.04 K
Final temperature (T₂) = 0.04 – 273
Final temperature (T₂) = –272.96 °C
Antonio is a silversmith and works with various metals. At the end of the day, he reclaims and separates each metal by using an inexpensive toxic acid though other methods are available. The risk of fire as well as health dangers to Antonio is unknown. What should Antonio do
The question is incomplete, the complete question is;
Antonio is a silversmith and works with various metals. At the end of the day, he reclaims and separates each metal by using an inexpensive toxic acid though other methods are available. The risk of fire as well as health dangers to Antonio is unknown. What should Antonio do? A) Dispose of the used acid by pouring it down the drain since the government will take care of any environmental issues that come from polluting the water. B) Get a fire insurance policy and make sure to visit the doctor regularly. C) Switch to another potentially less dangerous method of separating each metal. D) Pour it out in back of the studio in the gutter.
Answer:
C) Switch to another potentially less dangerous method of separating each metal.
Explanation:
The importance of safety in manufacturing processes can not be over emphasized. Clearly, Antonio's method of separating each metal holds the potential of a fire outbreak or causing major health problem for Antonio.
The best thing that Antonio can do is to explore other less potentially dangerous methods of separating each metal since there are other available and possibly safer methods of achieving the same end.
overfishing causes the yellow perch population in this food
web to decrease,
Otter
Osprey
Terrapin
Blue
crab
Algae
Snail
Yellow
perch
Shrimp
Cord grass
Which population is most likely to increase as a result?
A. Otter
The population likely to increase as a result is otter.
Option B is correct.
what is population?Population is described as the term typically used to refer to the number of people in a single area.
When the yellow perch population decreases, there is a decrease in predation pressure on the otter population which means that there are fewer yellow perch preying on the otters, which could lead to an increase in the otter population.
An organism population is described by characteristics that include: population size and the population density.
Learn more about population at:
https://brainly.com/question/29885712
#SPJ1
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:
Naphthalene, C10H8, an ingredient in mothballs, has a molar mass of 128.18 g/mol. How many molecules of naphthalene are in a mothball that has 6.000 g of naphthalene?
Answer:
2.83 × 10²² molecules.
Explanation:
Using the formula below to calculate the number of moles of Naphthalene:
mole = mass/molar mass
Where;
mass = 6.00g
Molar mass = 128.18 g/mol
mole = 6/128.18
mole = 0.047mol
To calculate the number of molecules of naphthalene in the mothballs, we multiply the number of moles (n) by Avagadro's number i.e.
number of molecule = n × 6.02 × 10^23
number of molecules = 0.047 × 6.02 × 10^23
= 0.283 × 10²³
= 2.83 × 10²² molecules.
What is the hypothetical van't Hoff factor of magnesium nitrate, Mg(NO3)2?
Answer:
The hypothetical van't Hoff factor of magnesium nitrate,[tex]Mg(NO_3)_2[/tex] is 3 .
Explanation:
Lets calculate -
[tex]Mg(NO_3)_2\rightarrow Mg^2^+ +2NO_3^-[/tex]
We know that ,
[tex]i=\alpha n+(1-\alpha )[/tex]
Dissociation should be 100% for the hypothetical vant hoff factor , that is
[tex]\alpha =1[/tex] and [tex]n=3[/tex] for [tex]Mg(NO_3)_2[/tex]
Therefore , putting the given values ,
[tex]i=1\times3+(1-1 )[/tex]
[tex]i=3+0[/tex]
[tex]i=3[/tex]
Hence , the answer is 3.
The hypothetical van't Hoff factor of magnesium nitrate is 3.
Van't Hoff factor is a measure of the deviation of a solution from ideal behavior. It depends on the number of particles in the solution. The more the particles in solution, the greater the Van't Hoff factor and the greater the deviation from ideal behavior.
For Mg(NO3)2, the hypothetical van't Hoff factor is 3 since there are three particles in solution when magnesium nitrate is dissolved in water.
Learn more: https://brainly.com/question/6284546
NAD+ and FAD are called ____
Answer:
Nicotinamide adenine dinucleotide
Flavin adenine dinucleotide
Explanation:
hope this helps ^^
Calculate how many grams of methane (CH4) are in a sealed 800. mL flask at room temperature (22 °C) and 780. mm of pressure. Show work pls.
"0.0340" mol of CH₄ are in sealed flask.
Methane (CH₄)Methane would also be a greenhouse gas, therefore its existence tends to affect humanity's surface temp as well as weather patterns framework; it is released into the atmosphere from such a wide assortment of life forms as well as biogenic.
According to the question,
Volume, V = 800 mL or, 0.800 L
Temperature, T = 22°C or, 295
Pressure, P = [tex]\frac{780}{760}[/tex] = 1.03 atm
As we know the relation,
The gram of moles will be will be:
→ n = [tex]\frac{PV}{RT}[/tex]
By substituting the values, we get
= [tex]\frac{1.03\times 0.800}{0.08206\times 295}[/tex]
= [tex]\frac{0.824}{242.077}[/tex]
= 0.0340
Thus the response above is correct.
Find out more information about methane here:
https://brainly.com/question/24690118
The balmer thermometer uses the atomic transitions of what element to measure the temperature of stars?
A. Helium
B. Gamma rays
C. Hydrogen
D. Nitrogen
E. Water
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
How many moles are in 3.87 x 10 ^24 molecules of carbon?
Answer:
1 mole contains 6.02⋅1023 particles
Explanation:
Explanation:
X×6.02⋅1023=3.75⋅1024→
X=3.75⋅10246.02⋅1023=0.623⋅101=6.23 moles
List or describe 2 chemical properties of gasoline
Answer:
The typical composition of gasoline hydrocarbons (% volume) is as follows: 4-8% alkanes; 2-5% alkenes; 25-40% isoalkanes; 3-7% cycloalkanes; l-4% cycloalkenes; and 20-50% total aromatics (0.5-2.5% benzene) (IARC 1989). ... Information regarding the chemical identity of gasoline is located in Table 3-l.
Explanation:
Derive the equation for half life 0.693/k
The equivalence point of a titration corresponds to which of the following?
O the point where equal volumes of acid and base have been used
O Equivalence point is another term for end point
All of the listed options are true
Equivalence point is defined as the point where the pH indicator changes color
O the point where the acid and base have been added in proper stoichiometric amounts
Answer:
E: the point where the acid and base have been added in proper stoichiometric amounts
Explanation:
Equivalence point in titration is simply the point where the amounts of acid and base used just sufficiently reacts chemically to cause neutralization whereas the endpoint is the point where the indicator of the titration changes colour.
The Equivalence point occurs before the endpoint.
Thus, option E is correct.
Help and I have Ramon too
Answer:
A
Explanation:
when water heats it expands its the only one that fits in context
In which phase of wound healing is fibrin most involved?
Answer:
Finally, coagulation occurs and reinforces the platelet plug with threads of fibrin which are like a molecular binding agent. The hemostasis stage of wound healing happens very quickly.
Explanation:
Hope it helps u
FOLLOW MY ACCOUNT PLS PLS
please help
A container containing 5.00 L of a gas is collected at 100 K and then allowed to expand to 20.0 L. What must the new temperature be in order to maintain the same pressure (as required by Charles' Law)?
Answer:
[tex]T_2=400K[/tex]
Explanation:
Hello there!
In this case, according to the given information for this question, it turns out possible for us to calculate the final temperature, after the expansion process, by using the well-known Charles' gas law:
[tex]\frac{T_2}{V_2}=\frac{T_1}{V_1}[/tex]
Thus, we solve for the final temperature to obtain:
[tex]T_2=\frac{T_1V_2}{V_1}[/tex]
And plug in the given values:
[tex]T_2=\frac{100K*20.0L}{5.00L}\\\\T_2=400K[/tex]
Regards!
