please solve if the pressure of 200cm cube of a gas is half at constant temperature.what will be the new volume
Answer:
400 cm³
Explanation:
Let p₁ Pa be the original pressure of the gas
p₂ Pa be the new pressure of the gas
V₁ m³ be the original volume of the gas
V₂ m³ be the new volume of the gas
According to Boyle's Law,
p₁V₁ = p₂V₂
p₁ × 0.0002 = 1/2 p₁ × V₂
0.0002 = 1/2 × V₂
V₂ = 0.0004
∴ The new volume of the gas = 0.0004 m³ = 400 cm³
The new volume will be 400 cm³
What is Boyle's Law?
Boyle’s law is a gas law which states that the pressure exerted by a gas (of a given mass, kept at a constant temperature) is inversely proportional to the volume occupied by it.
PV = constant
Boyle's Law can be used to compare changing conditions for a gas. In other words, the pressure and volume of a gas are inversely proportional to each other as long as the temperature and the quantity of gas are kept constant.
Given,
initial volume = 200cm³
Let us assume the initial pressure is p, then the final pressure will be 0.5p.
Using Boyle's law,
P₁V₁ = P₂V₂
p × 200 = 0.5p × V₂
V₂ = (p × 200) ÷ ( 0.5p)
V₂ = 400 cm³
Therefore, the new volume will be 400 cm³
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Use the following equation to answer the questions below.
CH4 (g) + 2O2 (g) → CO2 (g) + 2H2O (g)
-How many moles of water are produced from the reaction of 50.0g of methane (CH4)? (Show work)
Answer:
Explanation:
Here is ur answer what you wanna do first is calculate the first and second numbers and letters this should be ur answer = -394 + 2 x (-242) - (-75) + 2 x 0 = -803 kJ/mol
A car has a mass of 222 kg and is traveling at 13m/s. What is the Kinetic energy of the
car?
Explanation:
1/2*(13^2)*222=18759
Calculate the root - mean - square speeds of helium atoms and nitrogen molecules in m/s at 25° C
Answer: a) root - mean - square speeds of helium atom is 43.1 m/s
b) root - mean - square speeds of nitrogen molecule is 16.29m/s
Explanation:
The formula used for root mean square speed is:
[tex]\nu_{rms}=\sqrt{\frac{3RT}{M}}[/tex]
where,
[tex]\nu_{rms}[/tex] = root mean square speed
R = gas constant = [tex]8.314J/Kmol[/tex]
T = temperature = [tex]25^0C=(25+273)K=298K[/tex]
M = atomic mass
a) root - mean - square speeds of helium atom [tex](He)[/tex]
[tex]\nu_{rms}=\sqrt{\frac{3\times 8.314J/Kmol\times 298K}{4g/mol}}=43.1m/s[/tex]
b) root - mean - square speeds of nitrogen molecule [tex](N_2)[/tex]
[tex]\nu_{rms}=\sqrt{\frac{3\times 8.314J/Kmol\times 298K}{28.02g/mol}}=16.29m/s[/tex]
What creates an electric current in
a battery?
Answer: The answers are kinda blury but use this info to help u out or read over the passage
Explanation:A battery is a device that stores chemical energy and converts it to electrical energy. The chemical reactions in a battery involve the flow of electrons from one material (electrode) to another, through an external circuit. The flow of electrons provides an electric current that can be used to do work.
Answer: metal bending
Explanation: is the metal
How much heat is required to change 100.0g of ice at 0C into water at 0C?
Answer:
5 degrees required for ice
If a 130-kg car is traveling at a velocity of 23 m/s, what is the kinetic energy of the car?
Kinetic energy is the amount of energy present in the object due to motion. It is required by the body for action and motion. The kinetic energy of the car is 34385J.
What is kinetic energy?Kinetic energy is a type of energy that is directly proportional to the mass of the object and the square of the velocity. The formula for the kinetic energy can be given as,
[tex]\rm KE = \dfrac{1}{2}mv^{2}[/tex]
Here,
Mass of the car (m) = 130 kg
Velocity of the car (v) = 23 m/s
Substituting values in the equation:
[tex]\begin{aligned}\rm KE &= \dfrac{1}{2}\rm mv^{2}\\\\&= \dfrac{1}{2}\times 130\times (23)^{2}\\\\&= 34385\;\rm J\end{aligned}[/tex]
Therefore, 34385J is the kinetic energy of the car.
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Which formula represents an ionic compound?
A)H2
B)CH4
C)CH3OH
D)NH4CI
Which of the following is a potential exception to cell theory? Choose 1 answer: Fungal spore Asexual reproduction Mitochondria Amoebas
Answer:
Asexual reproduction
Explanation:
Cells are able to re produce themselves without other cells needed. If cells need others to make more then how would that work and plus we wouldn't have the theory of cells existing.
Please help me I’m not sure with that
Answer:
i cant see the picture sorry
Explanation:
Answer fast please?????????????
Answer:
option a. iron,copper, aluminium.
What is the PH for a solution that has an H+ ion concentration of 1.0x10^-6 M
Answer: POH=8
Explanation:PH = -log( H+concentration)
PH = 6
POH = 14 - PH = 8
What is climate? What are three things that cause the earths climate?
Answer:
The climate has been caused by many natural factors including changes in the sun emissions from volcanoes variations in Earth's orbit and levels of carbon dioxide. Global climate change has typically occured very slowly over thousands or millions of years .The three causes of the Earth's climate are
Industrial activitiesAgricultural activitiesDeforestationthese are the causes of the Earth's climate.
Climate is a average weather in a given area for a long period of time is called a climate
maybe this might help ur question
When animals drink nectar from the flower and move the pollen is to___________________the flower?
Answer:
Pollinate, If i gave you the wrong answer, i'll improve my answer for you
Explanation:
pollination bc the animal rubs off the pollen to the other plant which causes to bloom better bc it comes from the other plant
Diethylamine and HCl react to produce ________.
Answer:
diethylammonium chloride
Explanation:
In the given question, diethylamine and HCl react to produce diethylammonium chloride.
A reaction is a chemical process that includes the change of one or more substances into one or more different substances.
The reaction between dimethylamine and HCl produces dimethylammonium chloride. The chemical equation for the reaction is represented as:
[tex]\rm (CH_3)_2NH + HCl \rightarrow (CH_3)_2NH_2+ Cl^-[/tex]
In this reaction, dimethylamine acts as a base and accepts a proton [tex]\rm (H^+)[/tex] from HCl to form the salt, dimethylammonium chloride.
Therefore, diethylammonium chloride is formed when diethylamine and HCl reacts.
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Buffer sol that contain 1 mol NH4Cl and 1mol NH4OH per liter find PH
Answer: what
Explanation:
please help will give brainiest
Answer:
reaction, reversed, The Law Of Conservation of Mass, mass, rusts, oxygen
Explanation:
HOPE THIS HELPS!
Green plants use light from the Sun to drive photosynthesis, a chemical reaction in which liquid water and carbon dioxide gas form aqueous glucose C6H12O6 and oxygen O2 gas. Calculate the moles of water needed to produce 0.075mol of glucose. Be sure your answer has a unit symbol, if necessary, and round it to the correct number of significant digits
Answer: 0.45 moles of water are needed to produce 0.075mol of glucose.
Explanation:
The balanced chemical reaction is:
[tex]6CO_2(g)+6H_2O(l)\rightarrow C_6H_{12}O_6(aq)+6O_2(g)[/tex]
According to stoichiometry :
1 mole of glucose require = 6 moles of [tex]H_2O[/tex]
Thus 0.075 moles of glucose require = [tex]\frac{6}{1}\times 0.075=0.45[/tex] moles of [tex]H_2O[/tex]
0.45 moles of water are needed to produce 0.075mol of glucose.
Which of the following statements about balanced chemical equations is correct?
A.
The products must contain the same numbers and types of atoms as the reactants.
B.
The products must contain the same arrangement of atoms as found in the reactants.
C.
The products must contain the same numbers but not the same types of atoms as the reactants.
D.
The products must contain the same types but not the same numbers of atoms as the reactants.
Answer:A.
The products must contain the same numbers and types of atoms as the reactants.
Explanation: I think this
Answer:a
Explanation:
All animals make body heat. True or false?
Answer:
False
Explanation:
Some animals are cold blooded
Answer:
false
Explanation:
Calculate the volume of a balloon that can hold 113.4 g of nitrogen dioxide, NO2 gas at STP-
Answer:
55.18 L
Explanation:
First we convert 113.4 g of NO₂ into moles, using its molar mass:
113.4 g ÷ 46 g/mol = 2.465 molThen we use the PV=nRT formula, where:
P = 1atm & T = 273K (This means STP)n = 2.465 molR = 0.082 atm·L·mol⁻¹·K⁻¹V = ?Input the data:
1 atm * V = 2.465 mol * 0.082atm·L·mol⁻¹·K⁻¹ * 273 KAnd solve for V:
V = 55.18 LExplain the three types of thermal energy transfer and give an example of each type.
Answer:
Conduction is the transfer of energy from one molecule to the next by direct contact.
Convection is the movement of heat by a fluid such as air or water.
Radiation is the transfer of heat by electromagnetic waves.
Explanation:
Convection is known as the process of transferring energy or heat through a fluid (liquids or gasses) from high temperatures to low temperatures. Convection is known as one of the three types of heat energy transfer. The other two types of heat energy transfer are conduction and radiation. Conduction is known as the transfer of heat between anatomies that are directly touching each other. while, during radiation, the energy is discharged in the shape of electromagnetic waves.
As for the molecular motion in liquids, it is the result of convective heat energy transfer. Furthermore, the movement of the molecules increases as the temperature of the molecules is increasing. The result of this is that the molecules seem to move away from each other. The motion of the molecules is what is responsible for the transfer of heat.
what observation helps a poison ivy plant survive in its environment
#15 need help don’t understand
Which feature of a balanced chemical equation demonstrates the law of
conservation of mass?
A. It has the same types of atoms on both sides of the reaction
arrow.
B. It shows the reactants of a chemical reaction to the left of the
reaction arrow.
C. It shows the products of a chemical reaction to the right of the
reaction arrow
D. It has coefficients to show how much of each substance a
chemical reaction uses.
SUBMIT
Answer:
Another answer is : It has equal numbers of each type of atom in its reactants and products.
Explanation:
I just got it right on A.pex
Given the data from the question, the correct statement is:
It has the same types of atoms on both sides of the reaction arrow (Option A) What is a chemical equation?Chemical equations are representations of chemical reactions using symbols and formula of the reactants and products.
The reactants are located on the left side while the products are located on the right side.
Reactants —> Products
The balancing of chemical equations follows the law of conservation of matter which states that matter can neither be created nor destroyed during a chemical reaction but can be transferred from one form to another.
From the law of conservation of matter, it is evident that the same atoms of the element in the reactants are present in the products.
Thus, we can conclude that the correct answer to the question is: It has the same types of atoms on both sides of the reaction arrow (Option A)
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If 13.5 L of nitrogen gas reacts with 17.8 L of hydrogen gas at STP, according to the following reaction, what mass of ammonia would be produced? N2 + 3 H2 --> 2 NH3 Report your answer with proper significant figures, only a number answer is required, no units needed for this form.
Answer: N5 + H4 and then do 13.5 * 17.8 then solve so 240.3 divided by 9
Your answer is 26.7 Pretty sure
Explanation: (study)
Answer:
Work is all on the paper
Is the following equation balanced?
2C2H2 + 502 --> 4CO2 + 2H2O
Answer:
The reaction: 2C2H2+5O2->5O2->4CO2+2H2O is performed by mixing 175 grams of C2H2 and 175 grams of O2 to produce 127 grams of CO2
1)Limiting reagent
2)Theretical yeield of CO2
3)Percent yield of CO2
Explanation:
I think
What is the Empirical formula of sucrose (C12H22O11) ?
Sucrose is C12H22O11 and here we can not express it as the simplest ration of integers. So its empirical formula is same as that of its molecular formula I.e-C12H22O11.2017年10月31日
You find a 1979 copper penny (pre-1982 pennies are pure copper) in the snow and pick it up. How much heat does the penny absorb as it warms from the temperature of the snow, -5.0∘C to the temperature of your body, 37∘C. Assume the penny is pure copper and has a mass of 3.10 g. (The specific heat capacity of copper is 0.385 J/g∘C.)
Answer:
50.127 J
Explanation:
The following data were obtained from the question:
Initial temperature (T₁) = –5 °C
Final temperature (T₂) = 37 °C
Mass (M) = 3.10 g
Specific heat capacity (C) = 0.385 J/gºC
Heat (Q) absorbed =?
Next, we shall determine the change in temperature. This can be obtained as follow:
Initial temperature (T₁) = –5 °C
Final temperature (T₂) = 37 °C
Change in temperature (ΔT) =?
ΔT = T₂ – T₁
ΔT = 37 – (–5)
ΔT = 37 + 5
ΔT = 42 °C
Finally, we shall determine the heat absorbed. This can be obtained as follow:
Mass (M) = 3.10 g
Specific heat capacity (C) = 0.385 J/gºC
Change in temperature (ΔT) = 42 °C
Heat (Q) absorbed =?
Q = MCΔT
Q = 3.10 × 0.385 × 42
Q = 50.127 J
Thus, the heat absorbed is 50.127 J.
How many moles of PCl5 can be produced from 54.0 g of Cl2 (and excess P4)?
Answer:
0.304 mole of PCl₅.
Explanation:
We'll begin by calculating the number of mole in 54 g of Cl₂. This can be obtained as follow:
Mass of Cl₂ = 54 g
Molar mass of Cl₂ = 2 × 35.5 = 71 g/mol
Mole of Cl₂ =?
Mole = mass /molar mass
Mole of Cl₂ = 54 / 71
Mole of Cl₂ = 0.76 mole
Finally, we shall determine the number of mole of PCl₅ produced by the reaction of 54 g (i.e 0.76 mole) of Cl₂.
The equation for the reaction is given below:
10Cl₂ + P₄ —> 4PCl₅
From the balanced equation above,
10 moles of Cl₂ reacted to produce 4 moles of PCl₅.
Therefore, 0.76 mole of Cl₂ of will react to produce = (0.76 × 4)/10 = 0.304 mole of PCl₅.
Thus, 0.304 mole of PCl₅ were obtained from the reaction.