Answer:
according to me its c part which is correct
If a gas is pumped from a smaller container to a container that is twice the size, and its pressure is kept the same, then what happens to the temperature of the gas?
Answer: If a gas is pumped from a smaller container to a container that is twice the size, and its pressure is kept the same, then temperature of the gas increases twice.
Explanation:
Charles law states that at constant pressure, the volume of a gas is directly proportional to the temperature.
That is, [tex]V \propto T[/tex].
So, when a gas is pumped from a smaller container to a container that is twice the size shows that volume is increasing by 2 times and its pressure is kept the same.
Therefore,
[tex]2V \propto 2T[/tex]
This means that the temperature of the gas will also become twice its initial temperature.
Thus, we can conclude that if a gas is pumped from a smaller container to a container that is twice the size, and its pressure is kept the same, then temperature of the gas increases twice.
9. Explain why you can't write the formula of the ionic compound that forms between Fe
and S?
Answer:
See explanation
Explanation:
According to Fajan's rules, the degree of covalent character of a bond depends on the relative polarizing power of ions.
Generally, ions become more polarizing when they are small and highly charged. Large negative ions are more polarizable than small ones.
A very small positive charge concentrated on a small area such as in Fe^2+ makes the ion highly polarizing. Also, a large negative ion such as S^2- is highly polarizable.
As a result of these FeS has considerable covalent character hence we can not simply write the formula of the ionic compound that forms between Fe and S?
If 46.3 grams of acetylene are required to run a carbide lamp for 8 hours, how many moles of water are required
Answer:
1.78 mol
Explanation:
Step 1: Write the balanced equation
CaC₂ + H₂O ⇒ C₂H₂ + CaO
Step 2: Calculate the moles corresponding to 46.3 g of C₂H₂
The molar mass of C₂H₂ is 26.04 g/mol.
46.3 g × 1 mol/26.04 g = 1.78 mol
Step 3: Calculate the moles of H₂O required to form 1.78 moles of C₂H₂.
The molar ratio of H₂O to C₂H₂ is 1:1. The moles of H₂O required are 1/1 × 1.78 mol = 1.78 mol.
In this equation, what does n represent?
OA number of electrons in the cell
OB number of electrons in the reactants
OC number of moles of electrons transferred
OD number of products in the equation
OE number of reactants in the quotient
Answer:
the number of electrons in the cell
A balloon at sea level on earth (1 atm pressure, 19°C) takes up 14.5 L of space. The balloon travels to Mars where atmospheric pressure is 4.55 torr and the temperature is -55°C What is the volume of the balloon on Mars?
Answer:
1807.24L
Explanation:
Using combined gas law equation:
P1V1/T1 = P2V2/T2
Where;
P1 = pressure on Earth
P2 = Pressure on Mars
V1 = volume on Earth
V2 = volume on Mars
T1 = temperature on Earth
T2 = temperature on Mars
According to the information provided of the balloon in this question;
P1 = 1 atm
P2 = 4.55 torr = 4.55/760 = 0.00599atm
V1 = 14.5L
V2 = ?
T1 = 19°C = 19 + 273 = 292K
T2 = -55°C = -55 + 273 = 218K
Using P1V1/T1 = P2V2/T2
1 × 14.5/292 = 0.00599 × V2/218
14.5/292 = 0.00599V2/218
Cross multiply
14.5 × 218 = 292 × 0.00599V2
3161 = 1.74908V2
V2 = 3161 ÷ 1.74908
V2 = 1807.24L
What are the concentrations of hydronium and hydroxide ions in a solution with pH 2.6?
hey hi mate
wassup
answer is 4
explanation To calculate the pH of a solution, use the equation
p
H
=
−
log
[
H
3
O
+
]
Since we are given the hydronium ion (
H
3
O
+
) concentration of the solution, we can plug this value into the formula.
p
H
=
−
log
[
1.00
×
10
−
4
M
]
p
H
=
4
The pH of this solution is 4.
Added notes:
p
H
=
p
H
3
O
+
because hydrogen ions attach to water molecules for form hydronium ions.
Some other key things to remember for pH calculations include:
pH + pOH = 14
pH = -log[
H
+
]
pOH = -log[
O
H
−
]
[
H
+
]
=
10
−
p
H
[
O
H
−
]
=
10
−
p
O
H
Under the Controlled Substance Act (CSA), dispensing a controlled substance (CS) to the ultimate use includes ____________ (Select ALL that Apply)
Answer:.
pharmacies, prescribers, distributors/wholesalers, researchers, manufacturers, hospitals.
Explanation:
The Controlled Substance Act is a federal drug policy of the United States which regulates the manufacture, use, importation and possession and distribution of certain substances. It was enacted by the United States Congress in the year 1971.
Under the Controlled Substance Act, the dispensing of a controlled substance to the use includes pharmacies, prescribers, distributors/wholesalers, researchers, manufacturers, hospitals, etc.
ASAP PLEASE HELP What is the wavelength of a photon with a frequency of 6.56 x 1014 Hz?
A. 197 nm
B. 457 nm
O C. 303 nm
D. 435 nm
Answer:
B. 47 nm is the wavelength of a photon with a frequency of 6.56 x 1014 Hz.
Answer:
B. 457 NM ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
Nitrogen dioxide, a major air pollutant, can be produced by the combustion of nitrogen oxide as shown. 2NO + O2 Right arrow. 2NO2 In a plant, 1,500 kg of nitrogen oxide is consumed per day to produce 1,500 kg of nitrogen dioxide per day. What is the percent yield? Use Percent yield equals StartFraction actual yield over theoretical yield EndFraction times 100.. 21.7% 32.6% 43.5% 65.2% Mark this and return Save and Exit Next Submit
Answer:
65.2%
Explanation:
It is given that :
[tex]$2NO + O_2 \rightarrow 2NO_2$[/tex]
Therefore, 60 g of nitrogen oxide will produce 92 g of nitrogen dioxide
or 60 kg of nitrogen oxide will produce 92 kg of nitrogen dioxide
or 1500 kg of nitrogen oxide will produce [tex]2300\ kg[/tex] of nitrogen dioxide
Therefore the percentage yield = (Actual yield / Expected yield) x 100
percentage yield = [tex]$\frac{1500}{2300} \times 100$[/tex]
Percentage yield = 65.217 %
Answer:
the person above me is correct, the answer for this is 65.2% or option D!
Explanation:
thank you person above me! i got a 100% on the test! :D
During an experiment, solid iodine was placed in a sealed container. The container was gradually heated and purple-colored vapors of iodine formed were observed. Describe this system when it reaches phase equilibrium.
Answer:
See explanation
Explanation:
A system is said to have attained dynamic equilibrium when the rate of forward reaction and the rate of reverse reaction are equal.
Considering the system under consideration;
I2(s)⇄I2(g)
Heating the container converts solid iodine to purple coloured iodine vapour.
At equilibrium, there will be no net change in the amount of solid iodine and iodine vapour present in the system because the two processes (forward and reverse reactions) occur at the same rate at equilibrium.
need help w the questions in the pic! thankyouu
Answer: Here are the answers
Explanation:
7a) Calcium Chloride +water+carbon dioxide
b)Calcium Oxide +Carbon dioxide
8a) zinc + carbon monoxide
b) Aluminum + Carbon dioxide
c) Lead + carbon dioxide
How many molecular of H2O and O2 are present in 8.5g of H2O2 ?
2H2O+O2--->2H2O2
8.5 gm H2O2=0.25 mole
hence H2O is also 0.25 mole i.e.4.5 gm
O2is 0.125 mole i.e.4 gm
Why are most plants green out of all the colors?
Answer: Different forms of chlorophyll
Explanation:
Depending on the significance the of the chlorophyll it’s function is to absorb light, which excites electrons in the chlorophyll.
Answer:
Plant cells have an organelle called chloroplast in them. Chloroplast contains a green pigment called chlorophyll which gives plants it's green color.
Chlorophyll is important in plants as it helps the plant in producing food with the process of photosynthesis.
What is the percent yield of either if 1.11L(d=0.7134 g/mL) is isolated from the reaction of 1.500L of C2H5OH
Answer:
Percent yield of ether = 83.18%
Explanation:
Equation of the synthesis reaction of ether from ethanol is given as follows :
2 C₂H₅OH -----> C₂H₅OC₂H₅ + H₂0
Density = mass / volume
Therefore mass = density × volume
Density of ether = 0.7134 g/mL; volume of ether produced = 1.11 L = 1110 mL; Molar mass of ether = 74 g/mol
Mass of ether produced = 0.7134 g/mL × 1110 mL = 791.874 g
Density of ethanol = 0.789 g/mL; volume of ethanol = 1.50 L = 1500 mL; molar mass of ethanol = 46 g/mol
Mass of ethanol reacted = 0.789 g/mL × 1500 mL = 1183.5 g
From the equation of reaction, 2 mole of ethanol produces 1 mole of ether
Mass of 2 moles of ethanol = 2 × 46 = 92 g
Therefore, 92 g of ethanol produces 74 g of ether
1183.5 g of ethanol will produce 1183.5 × 74/92 grams of ether = 951.945 g of ether
Percent yield of ether = actual yield/theoretical yield × 100%
Actual yield of ether = 791.874 g; theoretical yield of ether = 951.945 g
Percent yield of ether = (791.874 g × 951.945 g) × 100 %
Percent yield of ether = 83.18%
Explain the difference between the movement of water molecules at room temperature and at 0 'C.
Answer:
at room temperature: -water is in liquid state bcecause of which molecules are freely moving
at 0°C:- it is freezing pointof water in this state water molecule can't move due to which there is no collision and chemical reaction will not take place
Explanation:
if i m right than tag me brilliant
The difference is in the speed of the molecules. At 0°C, the molecules move more slowly than at room temperature as their potential energy decreases.
effect of air and water on iron and zinc
Answer:
Rust
Explanation:
it does cool chemical things
`Answer is subscribe to XoX Snead on YT Explanation: b is the answer!!
Which is TRUE about the structure of the atom? Select all that apply.
a
the densest part of the atom is the nucleus of the atom
b
the outermost part of the atom is where electrons are found
c
the nucleus of the atom is where protons and neutrons are found.
d
the outer part of the atom is called the antinucleus.
e
the nucleus of the atom has a diameter of about 10-10 m.
In many halocarbons, among them chloroethane (CH3CH2Cl), a halogen is attached to an aliphatic carbon chain. These halocarbons are called _____.
1.carboxylic acids
2.alkyl halides
3.aryl halides
4.phenyl halides
Why does every chemical reaction require a certain amount of activation energy?
Explanation:
Activation energy is the minimum amount of energy required for a chemical reaction to take place.
When a chemical reaction occurs then bonds between the reactants break and bonds between the products are formed. This leads to the formation of an activated complex which is also known as transition state.
So, in order to form the activated complex a minimum amount of energy is necessary and this energy is known as activation energy.
How many grams of ammonia can be produced from reacting a 450 L sample of nitrogen gas at a temperature of 450 K and a pressure of 300 atm?
Answer: The mass of ammonia is 124457.96 g which can be produced from reacting a 450 L sample of nitrogen gas at a temperature of 450 K and a pressure of 300 atm.
Explanation:
Given: Volume = 450 L
Temperature = 450 K
Pressure = 300 atm
The reaction equation is as follows.
[tex]N_{2} + 3H_{2} \rightarrow 2NH_{3}[/tex]
Here, 1 mole of nitrogen reacts to give 2 moles of ammonia.
From the given data, moles of nitrogen are calculated as follows.
PV = nRT
where,
P = pressure
V = volume
n = no. of moles
R = gas constant = 0.0821 L atm/mol K
T = temperature
Substitute the values into the above formula as follows.
[tex]PV = nRT\\300 atm \times 450 L = n \times 0.0821 L atm/mol K \times 450 K\\n = \frac{300 atm \times 450 L}{0.0821 L atm/mol K \times 450 K}\\= \frac{135000}{36.945}\\= 3654.08 mol[/tex]
For 3654.08 moles of nitrogen, the moles of ammonia produced is as follows.
[tex]2 \times 3654.08 mol\\= 7308.16 mol[/tex]
Therefore, mass of ammonia (molar mass = 17.03 g/mol) is calculated as follows.
[tex]Moles = \frac{mass}{molarmass}\\7308.16 mol = \frac{mass}{17.03 g/mol}\\mass = 124457.96 g[/tex]
Thus, we can conclude that the mass of ammonia is 124457.96 g which can be produced from reacting a 450 L sample of nitrogen gas at a temperature of 450 K and a pressure of 300 atm.
For a reaction, AH = 176 kJ/mol and A SO = 0.285 kJ/(K•mol). At what
temperatures is this reaction spontaneous?
A. At no temperature
B. T< 50 K
C. T> 617 K
D. T< 617K
Freé point
[tex] \: \: \: \: \: \: [/tex]
Answer
Tq so much.
Pls follow me and Mark as brainliest Plsssssssss
Answer:
Thank you so much.
At a temperature of -25 °C, a sample of gas in a rigid container exerts a pressure of 55.8 kPa. At what temperature will the pressure reach 145 kPa?
The required temperature of the gas sample is -64.96 °C.
What is ideal gas equation?Ideal gas equation gives idea about the behavior of gas at different condition & represented as:
PV = nRT.
From the above equation it is clear that relation between temperature and pressure for this question is:
P₁/T₁ = P₂/T₂, where
P₁ & T₁ are the initial pressure and temperature.
P₂ & T₂ are the final pressure and temperature.
On putting values, we get
T₂ = (145)(-25) / (55.8) = -64.96 °C
Hence required temperature of the sample is -64.96 °C.
To know more about ideal gas equation, visit the below link:
https://brainly.com/question/1056445
#SPJ2
some one help please
Answer: oxnzle
Explanation:
explain about brownian movement in your own word
Answer:
Brownian moment means zig-Zag motion of particals Randomly anywhere in the free space or in fluids
Which statement correctly describes a product of a reaction within
photosynthesis?
O A. ATP is produced during the light reactions.
O B. Carbon dioxide is produced during the light reactions.
O C. Oxygen is produced during the Calvin cycle.
OD. NADPH is produced during the Calvin cycle.
Answer:
B
pls correct me if im wrong
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Using the balanced equation below, how many grams of cesium fluoride would be required to make 73.1 g of cesium xenon heptafluoride?
CSF + XeF6 → CsXeF7
Answer:
27.9 g
Explanation:
CsF + XeF₆ → CsXeF₇
First we convert 73.1 g of cesium xenon heptafluoride (CsXeF₇) into moles, using its molar mass:
Molar mass of CsXeF₇ = 397.193 g/mol73.1 g CsXeF₇ ÷ 397.193 g/mol = 0.184 mol CsXeF₇As 1 mol of cesium fluoride (CsF) produces 1 mol of CsXeF₇, in order to produce 0.184 moles of CsXeF₇ we would need 0.184 moles of CsF.
Now we convert 0.184 moles of CsF to moles, using the molar mass of CsF:
Molar mass of CsF = 151.9 g/mol0.184 mol * 151.9 g/mol = 27.9 gWhat kind of reactions are redox reactions
A reaction in which reduction and oxidation take place simultaneously known as a redox reaction.
The Austrian monk and scientist Gregor
studied the traits of pea plants. He could see that pea plant traits were passed from parents to offspring in a process called
.
Answer:
Mendel, Inheritance/Heredity
Explanation:
Gregor Mendel (1822-1884) was an Austrian monk and scientist as stated in this question. He is referred to as the FATHER OF GENETICS due to his immense contributions to the principle of inheritance.
Gregor Mendel via his several works conducted on pea plants was able to demonstrate how traits passed down from parents to offsprings in a process called INHERITANCE OR HEREDITY.
Your Answer is : 1st Mendel and 2nd heredity.
Explanation: