Answer:
22.4 L
Explanation:
We'll begin by calculating the number of mole in 16.0 g of CH₄. This can be obtained as follow:
Molar mass of CH₄ = 12 + (4×1)
= 12 + 4
= 16 g/mol
Mass of CH₄ = 16 g
Mole of CH₄ =?
Mole = mass / molar mass
Mole of CH₄ = 16 / 16
Mole of CH₄ = 1 mole
Finally, we shall determine the volume of the gas. This can be obtained as follow:
Number of mole of CH₄ (n) = 1 mole
Pressure (P) = 760 mmHg = 1 atm
Temperature (T) = 0°C = 273 K
Gas constant (R) = 0.0821 atm.L/Kmol
Volume (V)?
PV = nRT
1 × V = 1 × 0.0821 × 273
V = 22.4 L
Therefore, the volume of the gas is 22.4 L
Convert 444 cal to joules
Answer: 1
Decimal Answer: 1.858
4. Based on their placement on the periodic table, which of the following is more
reactive?
A.Sodium (Na)
B. Magnesium (Mg)
C. Barium (Ba)
D. Neon (Ne)
Alguien sabe como puedo saber si la bebida (gaseosa) al contener agua carbonatada, ¿esta pasa por electrolisi?, ya que el H2O, podria ser que puede ser de reaccion de sintesis, que seria H2+02------>H20? Seria hidrogeno gaseoso y pxigeno gaseoso formaria el agua carbonatada?, ayuda tengo esta duda >_
Answer:
Por formación de burbujas.
Explicación:
La presencia de burbujas en la superficie de la bebida ayuda a determinar si la bebida tiene gas carbonatado o dióxido de carbono. El gas de dióxido de carbono no se puede mezclar con agua ni disolver en agua normalmente. Se puede agregar mediante alta presión al agua para que cuando se coloquen en condiciones normales, el dióxido de carbono se libere en forma de burbujas. No, el gas hidrógeno y el gas hidrógeno no podrían formar agua carbonatada porque ambos son átomos diferentes. El agua carbonatada tiene gas dióxido de carbono, no gas hidrógeno.
Deforestation is the act of destroying forests so the land can be used for other purposes. Do you think deforestation increases, decreases, or has no effect on the biodiversity of the forest ecosystem? Explain your answer.
Answer:
deforestation decreases biodiversity of the forest ecosystem
Explanation:
Deforestation has to do with the process of felling trees. This process destroys forest ecosystems. Deforestation is normally carried out for the purpose of development.
An ecosystem is a self supporting unit in which living and non living things interact. The different species of plants and animals found in an ecosystem is called biodiversity.
Since organisms in an ecosystem interact among each other and with their non-living environment, destruction of the trees in the forest ecosystem leads to the loss of certain species present in the ecosystem.
For instance, climbers and animals found on tree tops are normal components of a forest ecosystem. When trees are felled and the forest ecosystem is destroyed across the world, these organisms are threatened. This leads to loss of species or loss of biodiversity.
Answer:
Here’s one possible answer:
Deforestation will likely decrease the biodiversity of the forest ecosystem. It reduces the living space and food sources for some of the organisms. Scarcity of space and food may be a threat to the population of those organisms. Over time, some species may die off, leaving fewer species in the forest.
Explanation:
What element is this? Is it a neutral atom or ion?
A solution of copper(II) chloride is added to a solution of sodium sulfide.
Write a balanced equation, and explain what type of reaction occurred and/or how you determined that a reaction occurred. Don't use solubility rules.
Answer:
a,morunoxidice
Explanation:
carbon - tranite>plangose ,finite, finite,MARETE
Ann is studying acid base neutralization reactions and mixes sodium hydroxide and hydrochloric acid. The reactants were clear,
colorless solution and mixing them produces a clear, colorless final solution and the beaker becomes warm. She knows this reaction
forms liquid water and an aqueous salt based on the neutralization rules as shown by the chemical equation. What physical evidence
indicates that there has been a chemical rea
NaOH(aq) + HCl(aq) - NaClaq) + H2 °C)
图 40)
A)
The solution changes color.
B)
Precipitate formation occurs.
C)
The beaker changes temperature.
D)
Gas bubbles form during the reaction.
Answer:C
Explanation:
Got it right in usatestprep
The physical evidence that indicates that there has been a chemical reaction is that the beaker changes temperature and the correct option is option C.
What is Neutralization reaction?
Neutralization is a chemical reaction in which acid and base react to form salt and water. Hydrogen (H⁺) ions and hydroxide (OH⁻ ions) react with each other to form water.
The strong acid and strong base neutralization have a pH value of 7.
The beaker gets warm which indicates that the reaction between acid and base is an exothermic reaction releasing heat energy into the surroundings.
Therefore, The physical evidence that indicates that there has been a chemical reaction is that the beaker changes temperature and the correct option is option C.
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A heterogeneous mixture always contains
only one substance.
O more than two substances.
O two or more substances that are visibly distinguishable.
O two or more substances that are not visibly distinguishable.
Answer:
two or more substances that are visibly distinguishable.
help me pass this test my last day of school is may 26 if you don’t mind I have more questions :)
Answer:
equal
Explanation:
Add coefficients to balance the equation to make water.
H2(g) +O2 (g)H20 (1)
Answer:
2H2+2O2=2H2O
Explanation:
hope this helps
Convert from °C to K. 13°C
Answer:
286.15 Kelvin
Explanation:
Answer:
286.15
Explanation:
Hope this helps, if its correct could you mark me as brainliest please?
A pacemaker:
A. sends electrical impulses to a prosthesis, causing it to move
through brain signals.
B. measures the distance traveled with a prosthetic leg.
C. tracks the speed traveled with a prosthetic leg and adjusts
movements accordingly.
D. sends electrical impulses to the heart, causing it to beat more
regularly
SUEMIT
THIS IS ALSO PAST DUE PLEASE ANYONE HELP BRINLIEST GIVEN
Explain how limiting growth is advantageous for the goldfish’s survival in a home aquarium
Answer:
I dont know what ur answers are but mine are option a and b fish will not out grow the tank and Concentration of waste in the water does NOT become harmful to the fish.
Explanation:
What is natural gas and how does it work
Answer:
Natural Gas is a fossil energy source that formed deep beneath the Earth's surface. It is used in power plants to generate electricity by burning natural gas as their fuel.
Explanation: I hope this helped :)
Answer:
A molecule of natural gas is made up of carbon and hydrogen. When the hydrogen is segregated from the carbon and filled into a fuel cell, it fuses with oxygen to produce water, electricity, and heat. The carbon is released as carbon dioxide in smaller quantities than from gas turbines.
Explanation:
This is the site I got the info from :
How Natural Gas Works | Peak Oilhttps://www.peakoil.net › non-renewable › how-natural-g
On a hot day, a 15.0 kg window increased from 20.0 degrees C to 26.7 degrees C. How much heat energy did the glass window absorb? (specific heat of glass = 0.840 J/gC)
Answer: The heat energy absorbed by the glass window is 84420 J.
Explanation:
Given: Mass = 15.0 kg (1 kg = 1000 g) = 15000 g
Specific heat capacity = [tex]0.840^{o}C[/tex]
Initial temperature = [tex]20^{o}C[/tex]
Final temperature = [tex]26.7^{o}C[/tex]
Formula used to calculate heat energy is as follows.
[tex]q = m \times C \times (T_{2} - T_{1})[/tex]
where,
q = heat energy
m = mass of substance
C = specific heat capacity
[tex]T_{1}[/tex] = initial temperature
[tex]T_{2}[/tex] = final temperature
Substitute the values into above formula as follows.
[tex]q = m \times C \times (T_{2} - T_{1})\\= 15000 g \times 0.840J/g^{o}C \times (26.7 - 20.0)^{o}C\\= 84420 J[/tex]
Thus, we can conclude that heat energy absorbed by the glass window is 84420J.
A 3.0 g sample of a gas occupies a volume of 1.00L at 100C and 740 torr pressure. The molecular weight of the
(Give the same ANSWER for the next TWO problems)
gas is
Answer:
94.2 g/mol
Explanation:
Ideal Gases Law can useful to solve this
P . V = n . R . T
We need to make some conversions
740 Torr . 1 atm/ 760 Torr = 0.974 atm
100°C + 273 = 373K
Let's replace the values
0.974 atm . 1 L = n . 0.082 L.atm/ mol.K . 373K
n will determine the number of moles
(0.974 atm . 1 L) / (0.082 L.atm/ mol.K . 373K)
n = 0.032 moles
This amount is the weigh for 3 g of gas. How many grams does 1 mol weighs?
Molecular weight → g/mol → 3 g/0.032 moles = 94.2 g/mol
Calculate the volume in L of 11.6 moles of Neon at 120 K when it has a pressure of 25.9 atm
Answer:
The volume of the gas is approximately 4.41 liters
Explanation:
The details of the data of the Neon gas are;
The number of moles of Neon gas present, n = 11.6 moles
The temperature of the sample of Neon gas, T = 120 K
The pressure of the sample of the Neon gas, P = 25.6 atm
By the ideal gas equation, we have;
P·V = n·R·T
Where;
R = The universal gal constant = 0.08205 L·atm·mol⁻¹·K⁻¹
Therefore, we get;
V = n·R·T/P
Which gives;
V = 11.6 moles × 0.08205 L·atm·mol⁻¹·K⁻¹ × 120 K/(25.9 atm) ≈ 4.4097915 L
The volume of the gas, V ≈ 4.41 L.
which statement is true concerning the Haber Process?
A.
It is a process for the synthesis of nitrogen gas.
B.
It is a process for the synthesis of ammonia.
c.
It is a process for the synthesis of methane.
D.
It is a process for the synthesis of carbon monoxide.
E.
It is a process for the synthesis of carbon dioxide.
Answer: the answer is B The Haber Process is used in the manufacturing of ammonia from nitrogen and hydrogen, and then goes on to explain the reasons for the conditions used in the process. The process combines nitrogen from the air with hydrogen derived mainly from natural gas (methane) into ammonia.
Explanation: Mark as brainliest if it helped!!
Magnesium metal reacts with oxygen according to the equation: Mg(s) + O2(g) → 2MgO2(s)
Which of the following would increase the rate of the reaction?
grinding the magnesium metal into a fine powder
packing the magnesium tightly at the bottom of the container
forming the magnesium metal into the shape of a sphere
forming the magnesium metal into single, large cube
Answer:
Grinding the magnesium metal into a fine powder. I took the test and got it right.
Which part of an organism is LEAST likely to form a fossil?
A. skin
B. tooth
C. bone
D. shell
Answer:
[tex]\huge \fbox \pink {A}\huge \fbox \green {n}\huge \fbox \blue {s}\huge \fbox \red {w}\huge \fbox \purple {e}\huge \fbox \orange {r}[/tex]
A. Skin
Explanation:
Skin unlike teeth, bones & shells is fragile & get decomposed easily under the soil.
Answer:
um a I think because when you look at dinosaur you don't see their skin anymore just like the bones and teeth
What is the value for AG at 300 K if AH = 27 kJ/mol and AS = 0.09 kJ/(mol-K)?
O
A. AG = 54 kJ/mol
O
B. AG=-18 kJ/mol
O
C. AG= 0 kJ/mol
O
D. AG = 27 kJ/mol
Answer:
0 kJ/mol
Explanation:
Step 1: Given data
Enthalpy change (ΔH): 27 kJ/molEntropy change (ΔS): 0.09 kJ/mol.KAbsolute temperature (T): 300 KStep 2: Calculate the Gibbs free energy change (ΔG)
We can calculate the Gibbs free energy change using the following expression.
ΔG = ΔH - T × ΔS
ΔG = 27 kJ/mol - 300 K × 0.09 kJ/mol.K = 0 kJ/mol
Since ΔG = 0 kJ/mol, the process in not spontaneous nor non-spontaneous.
Explain what will happen to the organisms that is affected by human activities.
Answer:
Human activity is by far the biggest cause of habitat loss.
Humans are now responsible for causing changes in the environment that hurt animals and plant species. We take up more space on Earth for our homes and cities. We pollute habitats. ... Human activity often changes or destroys the habitats that plants and animals need to survive.
Explanation:
Human activities are the various actions for recreation, living, or necessity done by people. For instance it includes leisure, entertainment, industry, recreation, war, and exercise.
Over time, destruction of such habitats leads to reduced biodiversity, weakening the Earth's ecosystems, and ultimately posing a major threat to human life. While, significant tracts of habitat have been lost, and along with them many species of plant and animal, steps can be taken to slow and even reverse the process.
One of the most significant ways in which humans have impacted on the lives of other species is by causing climate change. Many animals, including birds and frogs, now breed much earlier in spring in Britain than they did 20 years ago. Whether or not this is having a harmful effect on them has yet to be determined.
An atom has 23 protons and 24 neutrons. Write both its NAME and it's SYMBOL using isotope notation.
Answer:
Vanadium is the name and the symbol is V #23
Explanation:
What are the consequences of purposely having an excess of one of the reactants?
Answer:
When one reactant is in excess, there will always be some left over. The other reactant becomes a limiting factor and controls how much of each product is produced. While using excess reactants can help to increase percentage yields, this is at the expense of atom economy.
Explanation:
Which correctly lists the 3 types of
radiation from least damaging to most
damaging?
alpha < beta < gamma
alpha < gamma < beta
gamma < beta < alpha
beta < gamma < alpha
Answer:
alpha < beta < gamma.
Explanation:
Electromagnetic waves is a propagating medium used in all communications device to transmit data (messages) from the device of the sender to the device of the receiver.
An electromagnetic spectrum refers to a range of frequency and wavelength that an electromagnetic wave is distributed or extends. The electromagnetic spectrum comprises of gamma rays, visible light, ultraviolet radiation, x-rays, radio waves, and infrared radiation.
Generally, all radioactive elements are capable of emitting radiation. The three (3) types of nuclear radiation from least damaging to most damaging are; alpha, beta and gamma.
This ultimately implies that, alpha particles have the least damaging (penetrative) ability followed by beta particles and lastly, gamma rays.
2.3g of lithium chloride in 500cm3 of solution
Answer:
0.109M
Explanation:
Find molarity of the solution:
Molarity is defined as the ratio between the moles of the solute (Lithium Chloride in this case) per liter of solution. To solve this question we have to find the moles of LiCl and its volume as follows:
Moles LiCl -Molar mass: 42.394g/mol-
2.3g * (1mol / 42.394g) = 0.0543 moles
Volume in liters:
500cm³ * (1L / 1000cm³) = 0.500L
Molarity:
0.0543 moles / 0.500L =
0.109M
In the buffer solution CH3COsH(aq) -> H3O+(aq) + CH3CO2-(aq)
A. H3O+ is an acid, and CH3CO2H is its conjugate base.
B. CH3CO2H is an acid, and CH3CO2- is its conjugate base.
C. H3O+ is an acid, and CH3CO2- is its conjugate base.
D. CH3CO2H is a base, and H3O+ is its conjugate acid
In the buffer solution CH₃COOH (aq) ---> H₃O⁺(aq) + CH₃CO₂⁻(aq):
CH₃CO₂H is a base, and H₃O⁺ is its conjugate acid.
Option D is correct.
What is an acid?An acid is described as a molecule or ion capable of either donating a proton, known as a Brønsted–Lowry acid, or forming a covalent bond with an electron pair, known as a Lewis acid.
From the buffer solution above, H₃O⁺ is the conjugate acid because it donates a proton (H⁺) to a base CH₃CO₂H.
In conclusion, A conjugate acid, within the Brønsted–Lowry acid–base theory, is described as a chemical compound formed when an acid donates a proton (H⁺) to a base.
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Humans rely on water for
Answer:
almost everything
Explanation:
Determine the empirical formula of a compound containing 0.57% hydrogen, 72,1% Todine, and 27.3\% oxygen.
why does solid silver, Ag, conducts electricity while solid silver chloride, AgCl, does not.
Answer: A solid silver, Ag, conducts electricity because it contains ions or electrons while solid silver chloride, AgCl, does not conduct electricity because AgCl does not dissociate to give ions or electrons.
Explanation:
Solid silver (Ag) is considered to be a good conductor of electricity because there are more number of free electrons or movable atoms are present in it.
As electricity is the flow of ions or electrons. So, more is the number of ions or electrons present in a substance more will be its conductivity.
Whereas solid silver chloride is a precipitate that is insoluble in water and therefore, it will not give ions or electrons.
As a result, silver chloride is not able to conduct electricity.