Answer: The initial volume of gas was [tex]282cm^3[/tex]
Explanation:
Charles's Law: This law states that volume is directly proportional to temperature of the gas at constant pressure and number of moles.
[tex]V\propto T[/tex] (At constant pressure and number of moles)
[tex]\frac{V_1}{T_1}=\frac{V_2}{T_2}[/tex]
where,
[tex]V_1[/tex] = initial volume of gas =?
[tex]V_2[/tex] = final volume of gas = [tex]212cm^3[/tex]
[tex]T_1[/tex] = initial temperature of gas = [tex]122.0^0F=323.15K[/tex]
[tex](32^0C=273.15K)[/tex]
[tex]T_2[/tex] = final temperature of gas = [tex]-23.0^0F=242.59K[/tex]
[tex]\frac{V_1}{323.15}=\frac{212}{242.59}[/tex]
[tex]V_2=282cm^3[/tex]
Therefore, the initial volume of gas was [tex]282cm^3[/tex]
I REALLY NEED HELP ITS DUE TODAY TY IN ADVANCE <3
If a rigid can of volume 10.0 L starts at a temperature of 27 oC and 800.0 torr and is heated to 327 oC, what is the new pressure in torr?
Answer: The final pressure is 1600 torr.
Explanation:
To calculate the final pressure of the system, we use the equation given by Gay Lussac' Law. This law states that pressure of the gas is directly proportional to the temperature of the gas at constant volume.
Mathematically,
[tex]\frac{P_1}{T_1}=\frac{P_2}{T_2}[/tex]
where,
[tex]P_1\text{ and }T_1[/tex] are the initial pressure and temperature of the gas.
[tex]P_2\text{ and }T_2[/tex] are the final pressure and temperature of the gas.
We are given:
[tex]P_1=800.0torr\\T_1=27^oC=(27+273)K=300K\\P_2=?\\T_2=327^0C=(327+273)K=600K[/tex]
Putting values in above equation, we get:
[tex]\frac{800.0torr}{300K}=\frac{P_2}{600K}\\\\P_2=1600torr[/tex]
Thus the final pressure is 1600 torr.
Which is an example of technology leading to a new discovery?
A. A truck is used to ship goods between two states.
B. A telescope shows that there is a planet past Neptune
C. An irrigation system is installed at a farm.
D. An antibiotic is used to treat an infection.
Answer:
I think the answer would be B, because there is still stuff past the known exception of out private solar system. (and all the other options don't discover anything.)
r.
25. An organic compound (A) C3H5N, undergoes reduction with
LiAlHe to give (B), CzHgN. Compound (B) reacts with
chloroform and KOH to give an unpleasant smell. Compound
(B) reacts with sodium nitrite and hydrochloric acid to give
(C), C3H80, which on treatment with conc. H2SOа acid gives
(D) C3H6. (D) on reaction with conc. H2SO4 and subsequent
hydrolysis yield an isomer of (C). Identify A, B, C, D with
proper explanation and chemical reactions.
frivolont metal was
Answer:
A - Nitrile compound
B- AlkylAmine
C- Alcohol
D - Alkene
Explanation:
(A) undergoes reduction to form alkylamine.
(B) is a primary alkyl amine which on carbylamine test gives a foul smell.
(B) reacts with NaNO2 + HCl undergoes diasotisation following which alcohol is produced.
(C) being a alcohol undergoes hydrolysis to give alkene.
(D) On further reaction with H2S04 by the rule of Markownikoff rule it forms a isomer of (C).
How many moles can be found in 1.5 x 10^24 atoms of Calcium?
Which contains more reducing sugars, apple or cheese?
Answer:
An apple.
Explanation:
Hope this helps.
Calculate the mass of each element in the
compound by multiplying its molar mass by the
number of moles of the element present in one
mole of the compound
Mass N =
Mass H =
Mass O =
Answer:
For Mass N, Mass H, and Mass O, the mass is 28.0 g N, 4.0 g H, and 48.0 g respectively
Explanation:
The computation of the mass of each element is given below:
As we know that
A1 mole of ammonium nitrate i.e. 2 mol N, 4 mol H, 3 mol
Now we multiply each of above by the molar masses
For N
= 14.0 g/mol × 2
= 28.0 gN
For H
= 1.0 g/mol × 4
= 4.0 gN
ANd, for O
= 16.0 g/mol × 3
= 48.0 gN
Hence, For Mass N, Mass H, and Mass O, the mass is 28.0 g N, 4.0 g H, and 48.0 g respectively
ASAP PLS
A 18.7 g piece of aluminum (which has a heat capacity of 0.89 JPC-g) is
heated to 82.4°C and dropped into a calorimeter containing water
(specific heat capacity of water is 4.18 J/gºC) initially at 22.3°C. The final
temperature of the water is 24.3°C. Ignoring significant figures, calculate
the mass of water in the calorimeter. *
Answer:
think I did this before and its V
A sample of helium gas is heated from 20.0°C to 40.0°C. This
heating process causes the gas to expand to a volume of 585
mL. What was the original volume of the helium gas?
a 292mL
b 370mL
C 548mL
d 625mL
Answer:
C. 548mL
Explanation:
Attached is an image of the explanation. Hope this helps!
Combined gas law states that "the ratio of the product of pressure and volume and the absolute temperature of a gas is equal to a constant".
Temperature ,T₁ = 20⁰C = 20+273.15K = 293.15K
Temperature, T₂ = 40⁰C = 40+273.15K = 313.15K
According to combined gas law,
P₁V₁/n₁T₁ = P₂V₂/n₂T₂
Where, n is moles of substance
P is pressure
P and n are considered to be a constant.
Thus, V₁/T₁ = V₂/T₂
V₁ = V₂T₁/T₂
V₁ = ?,
V₂ = 585mL = 585mL x 293.15K/313.15K
V₁ = 548mL
Hence, the original volume of the helium gas is 548mL.
What is pressure?"Pressure is the force of all the gas particle/wall collisions divided by the area of the wall."
What is volume?"Volume is the amount of space occupied by a substance."
What is temperature?"Temperature is the measure of hotness or coldness expressed in terms of any of several scales, including Fahrenheit and Celsius."
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can someone help me with 5?
Answer:28 g
Explanation:
Choose the appropriate electron configuration for an element that has electrons in six orbitals.
Group of answer choices
1s2 2s2 2p6 3s2 3p6
1s2 2s2 2p6 3s2 3p4
1s2 2s2 2p6 3s1
1s2 2s2 2p5
Answer:
pagtoon og imo dotsExplanation:
pagtoon og imo dotsImage shown below of a chemistry question i would really appreciate the help
.Answer:
2kclo3 --> 2kcl + 3o2 is a decomposition reaction because it is breaking apart (thinks decompose- to break apart/down)
H2 + I2 --> 2HI is a synthesis reaction because synthesis is like creation/ building
think DNA synthesis or the book of genesis in the bible about creation
2 Na + 2 H20 --> NaOH + H2 --- not balanced at all
other one is a balanced equation- the Zn + 2HCl one
Explanation:
Which of the following is not the name of an amino acid?
A. Lysine
B. Valine
C. Methane
D. Phenylalanine
(Edge)
Answer:
C. Methane
Explanation:
Hopefully this isnt too late!
Answer:
C. Methane
(Photo for proof at the bottom.)
Explanation:
All amino acids contain an amino group, a carboxyl group, and an R group. An amino group consists of NH2. A carboxyl group consists of COOH. And an R group usually consists of a hydrogen or carbon atom bonded to the amino acid. Methane only consists of CH4, which clearly does not meet the criteria of an amino acid.
Here's a photo of Edge incase you're doubtful.
Please click the heart if this helped.
c. Write P on the line if the given object possesses potential energy and Krit
possesses kinetic energy.
1. Bouncing ball
2. Swinging chimes
3. Toys on the floor
4. Drinking glass on a table
5. Rotating blades of an electric fan
6. Moving car
7. Skater standing still
8. A running athlete
9. Planets orbits in its axis
10. lamp
Answer:
1 K
2 P
3 P
4 P
5 K
6 K
7 K
8 P
9P
10 K
An example of a property that could change only if a chemical
change occurs is
a
size.
b shape.
C volume.
d flammability.
Answer:
d flammabilty
Explanation:
flammability is a property of a chemical change
28.
Hormones:
A. are released into the interstitium.
B. require target cell receptors to illicit a target cell response.
C. are always proteins.
Only A & B are correct
Answer: I believe that B) require target cell receptors to illicit a target cell response, is the right answer.
Explanation:
1
is the amount of space
that matter in an object occupies.
4. Automotive airbags inflate when sodium azide, NaN 3, rapidly decomposes to its constituent elements according to the chemical equation, 2 NaN3 → 2 Na + 3 N2. 2 Na + 3 N2. How many moles of nitrogen are produced when 10000. milligrams of sodium azide decomposes? 0.07691142 mone a. 3.0000 moles 357 2 b. 0.15385 moles c. 0.23077 moles d. 230.77 moles
Answer:
B or 0.1538
Explanation:
Remark
For every mol of NaN3 that decomposes, 3 mols of N2 are produced.
10000 mg = 10 grams
NaN3 = 23 + 3*14
NaN3 = 23 + 42
NaN3 = 65
So set up the following proportion
10 grams / 65 = x /1 Cross multiply
10 * 1 = 65 x Divide by 65
x = 10 / 65
x = 0.1538 moles which is B I think
Answer the following question by studying the given
structure of the stoma
1)Name the atoms of element
2)In which group of the periodic table do these element lie?
Answer:
1) A. carbon B. oxygen
2) A. semi metal. B. Non- metal( gas)
PLZZZ HELP CHEMISTRY QUESTION DOWN BELOW IMAGE SHOWWN BELOW
Answer:
Id say the third one
Explanation: chemical equilibrium is the state in which both reactants and products are present in concentrations which have no further tendency to change with time, so that there is no observable change in the properties of the system.
thats the only one that is close to definition
the table shows the pH levels of four common items. If a student tests a sample of each item, which will turn a strip of red litmus paper blue?
a-lemon juice
b- vinegar
c-coffee
d-hand soap
please answer and have an explanation.
LINKS WILL BE REPORTED
Sunlight is more spread out as you move away from the equator.
True
False - poles
Answer:
False.
Explanation:
The given statement asserts a false claim because the equator is the region that receives maximum sunlight. The equator is placed right below the sun and thus, it tends to receive the maximum radiation across the year. While the poles are the coldest regions of the Earth because due to Earth's titled axis, they receive very few sun rays for a certain time of the year. Thus, if we move away from the equator, we are likely to receive less radiation from the sun as the sun keeps getting farther while moving away from the equator.
What is the wavelength of a photon with a frequency of 4.72 x 1014 Hz?
A. 635 nm
B. 142 nm
C. 421 nm
D. 313 nm
Answer:
635 nm
Explanation:
more simple answer
The correct option is (a) 635 nm.
What is a simple definition of a wavelength?A wavelength that is carried in space or down a wire has a wavelength, which is the separation between two identical places (adjacent crests) in the consecutive cycles.Wavelength is usually denoted by the Greek letter lambda (λ)Given,
λ=6.36×10−7 m
Let C = the speed of light =3.00× [tex]10^{8}[/tex] m/s
Let f = the frequency = 4.72 × [tex]10^{14}[/tex] Hz
Let λ= the unknown wavelength
Now apply formula of wavelength
λ = C /f
λ = [tex]\frac{3.00 * 10^{8 }m/s }{4.72 * 10^{14} Hz}[/tex]
λ = 6.36 × [tex]10^{-7}[/tex] m
λ = 635 m
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A box of pills claims that they will make your cold go away sooner. Who
would be the most impartial source for information on this claim?
A. The company that makes the medicine
B. The store that sells the medicine
C. A company that makes a competing medicine
.
D. A university study that tests medicine
Answer:D
Explanation:
A roller coaster is travelling without friction as
shown in the diagram. If the speed of the roller
coaster at A is 3.0 m/s, what is the speed at B?
Answer:
Thus, the speed at B = 13 m/s
Explanation:
From the attached image:
Using the conservation of energy;
Iinital M.E = Final M.E
where;
M.E = mechanical energy
∴
[tex]\dfrac{1}{2} \times m \times v_A^2+ mgh_A = \dfrac{1}{2} \times m \times v_B^2+ mgh_B[/tex]
[tex]\dfrac{1}{2} \times m \times 3^2+m \times 9.8 \times 15 = \dfrac{1}{2} \times m \times v_B^2+ m\times 9.8 \times 7 \\ \\ \dfrac{1}{2} \times 3^2 + 9.8 \times 15 = \dfrac{1}{2} \times v^2 + 9.8 \times 7 \\ \\ \implies 151.5 = 0.5 v^2 + 68.6 \\ \\ 0.5v^2 = 151.5 - 68.6 \\ \\ 0.5 v^2 = 82.9 \\ \\ v^2 = \dfrac{82.9}{0.5} \\ \\ v^2 = 165.8 \\ \\ v = \sqrt{165.8} \\ \\ v = 12.9 \ m/s\\ \\ \mathbf{v \simeq 13 \ m/s}[/tex]
The equation for the formation of ammonia from nitrogen and hydrogen is shown below. What is the formula for the equilibrium constant, Kc? {Hint, I’m just looking for letters/symbols, not numbers.}
H2(g) + N2(g) ⇌ NH3(g)
First, make sure to balance your equation.
3H2(g) + N2(g) ⇄ 2NH3(g)
Now, you can write your Kc expression. Remember that Kc is products over reactants, and the exponent for each product or reactant is based on its coefficient.
Kc = [NH3]^2 / [H2]^3[N2]
The reaction between nitrogen and hydrogen is called the Haber process. Kc for the reaction is the ratio of the concentration of ammonia to nitrogen and hydrogen.
What is the equilibrium constant?An equilibrium constant, kc is the concentration proportion of the products to the concentration of the reactants raised by their respective coefficients.
The balanced chemical Haber process is given as:
[tex]\rm 3H_{2}(g) + N_{2}(g) \leftrightharpoons 2NH_{3}(g)[/tex]
Now, the equilibrium constant for the reaction can be given as:
[tex]\rm Kc = \rm \dfrac{[NH_{3}]^{2}}{[H_{2}]^{3}[N_{2}]}[/tex]
Therefore, the ratio of the concentration of ammonia to hydrogen and nitrogen gives the equilibrium constant.
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When an organism eats a plants,the energy and nutrients stored in the consumed organism flows up to the____level
Answer:
Energy is transferred between trophic levels when one organism eats another and gets the energy-rich molecules from its prey's body.
Explanation:
The flow of energy in an ecosystem is always linear ie uni direction. At each energy step in food chain, the energy received by the organisms is used for its own metabolism and maintenance. The left over energy is passed to next higher trophic level. Thus the energy flow decreases with successive trophic level.
HI(aq)+NaOH(aq)→
what the final balanced chemical equation with the phases included
Answer:
[tex]HI(aq)+NaOH(aq)\rightarrow NaI(aq)+H_2O(l)[/tex]
Explanation:
Hello there!
In this case, for this neutralization reaction, it is possible to realize that one the neutralization products is water (pH=7) and the other one is the salt coming up from the cation of the NaOH and the anion of the HI:
[tex]HI(aq)+NaOH(aq)\rightarrow NaI+H_2O[/tex]
Moreover, since the solubility of NaI is large in water, we infer it remains aqueous whereas the water is maintained as liquid:
[tex]HI(aq)+NaOH(aq)\rightarrow NaI(aq)+H_2O(l)[/tex]
Which is also balanced as the number of atoms of all the elements is the same at both sides.
Best regards!
For each of the following precipitation reactions, complete and balance the equation, indicating clearly which product is the precipitate.
a) Ba(NO3)2(aq) + (NH4)2SO4(aq)
b)CoCl3(aq) + NaOH(aq)
c)FeCl3(aq) + (NH4)2SS(aq)
Answer:
a) Ba(NO₃)₂(aq) + (NH₄)₂SO₄(aq) ⇒ 2 NH₄NO₃(aq) + BaSO₄(s)
b) CoCl₃(aq) + 3 NaOH(aq) ⇒ 3 NaCl(aq) + Co(OH)₃(s)
c) 2 FeCl₃(aq) + 3 (NH₄)₂S(aq) ⇒ 6 NH₄Cl(aq) + Fe₂S₃(s)
Explanation:
We have 3 double displacement reactions, in which both reactants exchange their cations and anions, and an insoluble compound is formed and precipitates as a solid. This is indicated as (s).
a) Ba(NO₃)₂(aq) + (NH₄)₂SO₄(aq) ⇒ 2 NH₄NO₃(aq) + BaSO₄(s)
b) CoCl₃(aq) + 3 NaOH(aq) ⇒ 3 NaCl(aq) + Co(OH)₃(s)
c) 2 FeCl₃(aq) + 3 (NH₄)₂S(aq) ⇒ 6 NH₄Cl(aq) + Fe₂S₃(s)
Which process created the gases of earth’s first atmosphere?
a.volcanic activity
b.weathering
c.photosynthesis
d.photolysis
Answer:
Volcanic Activity
Explanation:
Answer: A) Volcanic Activity