Answer:
[tex]d=9.5g/L[/tex]
Explanation:
Hello there!
In this case, according to the given information, it i possible for us to calculate the density of this gas via the ideal gas equation, according to the following setup:
[tex]PV=nRT\\\\P=\frac{mRT}{V*MM} \\\\\frac{m}{V}=d=\frac{P*MM}{RT}[/tex]
Thus, we plug in the variables (pressure in atm and temperature in K) to obtain:
[tex]d=\frac{113.6368atm*2.02g/mol}{0.08206\frac{atm*L}{mol*K}*(21+273)K} \\\\d=9.5g/L[/tex]
Regards!
How much is 1 mole of something?
Answer: D.
Explanation:
6.02 * 10^-23
Titan, the largest moon of Saturn, has an atmosphere that is about 94% nitrogen (N2) and 6% methane (CH4). The molecular mass of nitrogen is 4.651e-26kg and the molecular mass of methane is 2.663e-26kg. The acceleration due to gravity at the surface is about 1.35 m/s^2. For this problem, assume that Titan's atmosphere is in thermal equilibrium at 100 K. What fraction of the atmosphere is methane at altitude 2 km
Answer:
9.493 e-01
Explanation:
Given that Titan's temperature at thermal equilibrium = 100 K
Determine the fraction of the atmosphere that is methane
at an altitude of 2 km
applying Ideal gas law
P = Po e^ -Z/k ---- ( 1 )
In this question Z = M₀ g z ( replace -Z in equation 1 with M₀gz )
P = Po e^- M₀gz / RT ------ ( 2 )
where : Mo = 16 * 10^ -3 kg/mol , g = 1.35 m/s^2 , z = 2 * 10^3 m , R = 8.3 J/mol.k , T = 100 k
insert values Back to equation 2
P = Po e^-0.052
P = 0.9493 Po
hence the fraction of the atmosphere that is methane
= P / Po = 9.493 * 10^-1
= 9.493 e-01
what dose bioverisidy refer to
Answer:
The term biodiversity (from “biological diversity”) refers to the variety of life on Earth at all its levels, from genes to ecosystems, and can encompass the evolutionary, ecological, and cultural processes that sustain life.
or if you want a short answer:
The term “biodiversity” refers to the variety of living organisms.
Answer:
the term bioverisidy refer to the veriety of life on earth at all its levels from genes to ecosystem and ecompass the evolutionary ecological and cultural prosesses that sustain life
What is the [OH-] of a solution with a pH of 3.89?
Which one is it?
7.76 x 10^-11
1.29 x 10^-4
2.11 x 10^-6
4.51 x 10^-10
Answer:
the answer is 211106 is better than anything else about u and then let's go play with kids like that first time in the class ohh ok
Charles's Law: This law essentially states that gas volume has a direct relationship to temperature. If a football is inflated indoors during winter and then taken outside, what volume will be occupied inside the football if indoors the football is inflated at 26°c taking up 100 cm3, and it is 13°c outside?
Answer:
V2 = 95.65 cm^3 or 96 cm^3 (depends on if you want to round up or not)
Explanation:
Charles law is V1 / T1 = V2 / T2 (1 means initial and 2 means final condition)
For Charles law, you must use kelvin scale for temperature. So to convert from C to K, you add 273.15
T1 = 26 +273.15 = 299.15 K
T2 = 13 + 273.15 = 286.15 K
Now plug in the values,
100 / 299.15 = V2/286.15
V2 = 95.65 cm^3 or ~ 96 cm^3
The answer should make sense because if they have a direct relation, if one goes down then the other goes down. For final condition, we lowered the temperature so our volume should have decreased too and it did (we went from 100 to 96 cm^3)
7. What is the pH of [OH-] = 1.0 * 10-5 solution?
О
1
5
14
9
Answer:
I'd 9 Coz is better than anything else I help so u need to other people that question don't be jealous of them
To increase the temperature of 100.0 g
of ice from -50.0? to -10.0?, how
much energy is required?
We are given:
Mass of ice = 100 grams
Initial temperature = -50°C
Final Temperature = -10°C
We know that the specific heat of ice is 2.09 joules / (gram * °c)
Heat Absorbed:
We know that:
ΔQ = mcΔT [where ΔQ is the heat absorbed]
ΔQ = (100 grams)(2.09)(-10 - (-50))
ΔQ = (100)(2.09)(40)
ΔQ = 8360 Joules
Maintaining constant pressure, the volume of a gas is increased from 12,0 L
to 32.0 L by heating it. If the original temperature was 23.0°C, what is the
new temperature? *
23. 45 K
61.33 K
789.33 K
567.87 K
Answer:
790 K
Explanation:
Step 1: Given data
Initial volume of the gas (V₁): 12.0 LInitial temperature of the gas (T₁): 23.0 °CFinal volume of the gas (V₂): 32.0 LStep 2: Convert 23.0 °C to Kelvin
We will use the following expression.
K = °C + 273.15 = 23.0 + 273.15 = 296.2 K
Step 3: Calculate the final temperature of the gas
Assuming constant pressure and ideal behavior, we can calculate the final temperature of the gas using Charles' law.
T₁/V₁ = T₂/V₂
T₂ = T₁ × V₂/V₁
T₂ = 296.2 K × 32.0 L/12.0 L = 790 K
Which of the following is most easily oxidized?
A. Ni2+
B. Fe3+
C. H+
D. Fe2+
Answer:
B: Fe3+
Explanation:
Usually in oxidation reactions, the oxidation number of a monatomic ion is the same as the charge on the ion, for example: oxidation number for Na^(+) is +1 , while in S^(2-), oxidation number is -2.
Now, from the activity series of metals in aqueous solution which I attached, we will see that iron (Fe) is easily oxidized than Nickel (Ni2+) and hydrogen (H+).
So we are left with Fe^(2+) and Fe^(3+).
Now, an increase in oxidation number means the more likely to be oxidized.
Thus, Fe^(3+) is the most easily oxidized.
15men work in 80days .How long will it take to finish that work if 5men were added?
Answer:
80 day= 15 men
Explanation:
1 man takes = 80*15 = 1200 days
20 men take = 1200/20= 60 days
Answer:
80 days=15 men
Explanation:
hope it helps❣️
Please hurry! And help!!
Best answer gets marked Brainliest!
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When two nitrogen atoms combine, they form a
A) Compound
B) Liquid
C) mixture
D) Molecule
Answer:
I guess the answer is compound
Explanation:
Coz compound it is on there playing with me again Go ahead and paste it in the class
2. In the electrolysis of water
(a) Name the gases liberated at anode and cathode.
(b) Why is it that the volume of gas collected on one electrode is two times that on the other
electrode?
(c) What would happen if dil.H,SO, is not added to water?
Answer:
In the electrolysis of water the gases collected in anode is oxygen and in cathode is hydrogen.
It is because water contains two molecules as compared to one molecules of oxygen.
If Dil.H,So, is not added in water then water doesn't conduct electricity.
Please make me brainiest answer
Which substance has Delta.Hf defined as 0 kJ/mol?
A. H2O (s)
B. Ne (l)
C. F2 (g)
D. CO2 (g)
Answer:
its actually c
Explanation:
how can miscible liquids that different boiling points be separated
Answer:
By boiling and further condensing the liquid with the lowest boiling point.
Explanation:
Hello there!
In this case, according to the attached diagram, it turns out possible for us to infer that the mechanism whereby miscible liquids with different boiling points are separated is distillation, because the flask is heated until the boiling point of the liquid with the lowest value, in order to boil it and subsequently condense it, whereas the liquid with the highest boiling point remains in the flask; and therefore, the two liquids are separated.
Regards!
mechanism of the reaction citric acid with sodium bicarbonate?
Explanation:
When citric acid and baking soda react with one another, they change chemi- cally and form sodium ions, citric acid ions, carbon dioxide gas, and water. ... It also makes up the bubbles in carbonated drinks and is a gas we naturally exhale. Carbon dioxide gas is safe in the quantities produced in the activities.
What chemical is used to represent compounds
Answer:
Compounds are represented by chemical formulas. Elements in a compound are represented by chemical symbols, and the ratio of different elements is represented by subscripts.
How are photosynthesis and cellular respiration related?
A. Photosynthesis releases energy, while cellular respiration stores energy
B. Cellular respiration breaks down glucose, while photosynthesis produces glucose.
C. Cellular respiration is the process animals use to produce glucose, while photosynthesis is the process plants use to produce glucose.
D. Photosynthesis produces water molecules, while cellular respiration splits water molecules apart.
Answer:
B part is the correct answer
Which process produces the energy that is used by solar panels?
O A. Nuclear fusion
O B. Combustion
O C. Chemical decay
D. Nuclear decay
Answer:
B
Explanation:
Answer:
A
Explanation: got it right
What is the lowest whole number ratio between the aluminum ion and carbonate ion in the compound, aluminum carbonate?
A. 2 :1
B. 1: 1
C. 3 : 2
D. 1 : 2
E. 2 : 3
Answer:
E. 2 : 3
Explanation:
Aluminium carbonate is a neutral compound made by aluminium ion, Al³⁺ and carbonate ion, CO₃²⁻. As is neutral, the formula must be:
Al₂(CO₃)₃.
2 Al₃⁺ = 6 positives charges
3 CO₃²⁻ = 6 negative charges
Thus, the simplest whole number ratio between Al³⁺ and CO₃²⁻ must be:
2:3
And right answer is:
E. 2 : 3A beaker of 450g of water is heated from 4.0°C to 25.0°C on a hot plate. If the
specific heat of H2O is 4.18J/9°C how much energy has the water absorbed?
A 39,501 J
B 4.42 x 104
C 5.13 J
D 54,549 J
Answer: 5.13
Explanation: juss do it
Taking into account the definition of calorimetry, the water has absorbed 39,501 J.
CalorimetryCalorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.
Sensible heat is defined as the amount of heat that a body absorbs or releases without any changes in its physical state (phase change).
So, the equation that allows to calculate heat exchanges is:
Q = c× m× ΔT
where Q is the heat exchanged by a body of mass m, made up of a specific heat substance c and where ΔT is the temperature variation.
Energy that the water absorbedIn this case, you know:
Q= ?c= 4.18 [tex]\frac{J}{gC}[/tex]m= 450 g ΔT= Tfinal - Tinitial= 25 C - 4 C= 21 CReplacing in the definition of calorimetry:
Q = 4.18 [tex]\frac{J}{gC}[/tex]× 450 g× 21 C
Solving:
Q= 39,501 J
Finally, the water has absorbed 39,501 J.
Learn more about calorimetry:
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When fluorine (F) forms chemical compounds with metals, the fluorine atom gains electrons , looses electrons
how much mercury-203 remains after 200 days
Answer:
50%
Explanation:
what are factors that affecting the boiling point of liquid?
What is the mass of 6.02 x 1023 atoms of carbon-12?
A)
me
6 grams
B)
6.02 grams
6.02 x 1023
grams
D)
12 grams
Answer: its D 12 grams
Explanation: you just have to find the molar mass of carbon in the periodic table
An Arrhenius base increases the concentration of hydrogen ions when dissolved in solution. (3 points)
Answer:
Explanation:
False
Answer:
false
Explanation:
took the test
A nurse practitioner prepares 470. mL of an IV of normal saline solution to be delivered at a rate of 85 mL/h. What is the infusion time, in hours, to deliver 470. mL?
Answer: Infusion time is 5.5 h
Explanation: Time is 470 ml / 85 ml/h = 5.5 h
How many kilojoules (kJ) in 373 joules (J)?
Answer: There are 0.373 kJ in 373 joules.
Explanation:
According to the standard conversion units 1 kJ is equal to 1000 J. This means that 1 J is equal to 0.001 kJ.
Hence, 373 joules is converted into kilojoules as follows.
[tex]1 J = 0.001 kJ\\373 J = 373 J \times \frac{0.001 J}{1 kJ}\\= 0.373 kJ[/tex]
Thus, we can conclude that there are 0.373 kJ in 373 joules.
Why is it necessary to keep the total number of drops in the test tubes
consistent?
Answer:
I don't know if this is right but..
Explanation:
It is important to keep the volume of the reactant constant because it ensures that the temperature change was the result of the reactants consumed
Why it is necessary to keep the to drops in the test tubes consistent is:
To be able to achieve your desire results, it is imperative that you follow the procedure and use the drops specified because any other drop may shift the equilibrium to the right and this will increase the rate of reaction leading to more collisions of that reactant in a specific time period and therefore alter (slow or increase) the chemical reaction.In a chemical reaction, the reactants, are undergoing chemical reaction which therefore brings about a products. The reaction rate shows how quickly or slowly the reaction takes place.Conclusively, Why it is necessary to keep the to drops in the test tubes consistent is:
To be able to achieve your desire results, it is imperative that you follow the procedure and use the drop specified because any other drop may shift the equilibrium to the right and this will increase the rate of reaction leading to more collisions of that reactant in a specific time period.Learn more from
https://brainly.com/question/14197404
Consider the role of third world countries in this system. How would they benefit or not benefit from a cap and trade system?
Answer:
they would benefit
Explanation:
they would benefit because we can move more machines that reduce pollution in those countries.
If 50 mL of pure acetone is mixed with 450 mL of water, what is the percent by volume of acetone?
Answer:
10%
Explanation:
The percent by volume of acetone is given by the following formula:
% v/v = Volume of acetone / Total Volume * 100%
Now we calculate the total volume of the solution:
Total Volume = Volume of Acetone + Volume of Water
Total Volume = 50 mL + 450 mL = 500 mL
Then we calculate the percent by volume:
% v/v = 50 mL / 500 mL * 100 % = 10%