This problem is providing the equilibrium reaction between magnesium and carbon and asks for a way to increase the amount of magnesium oxide, a product. Thus, the answer turns out to be decrease the carbon.
Le Cha telier's principle.In chemistry, when a chemical reaction attempts to go to completion, it might experience a limitation known as equilibrium; a condition where it is not able to proceed any further.
In such a way, for the given reaction:
[tex]2Mg+CO_2\rightleftharpoons2MgO+C[/tex]
One can see that the increase of magnesium oxide, as required, can be accomplished by either increasing any reactant or removing any product in order to shift the equilibrium towards it.
In such a way, one concludes that the correct choice is decrease carbon as it will shift the reaction towards the product; however, we must keep in mind that neither solid nor liquid species contribute to the equilibrium.
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2.37 x 10-7
is
1 x 10-7,
greater than
less than
Answer:
greater than
Explanation:
What is the volume of 0.200 mol of an ideal gas at 200. kpa and 400. k? use p v equals n r t. and r equals 8.314 startfraction l times kilopascals over moles time k endfraction.. 0.83 l 3.33 l 5.60 l 20.8 l
3.33 liter is the volume of 0.200 mole of an ideal gas at 200 kPa pressure and 400 K temperature.
What is ideal gas equation?Ideal gas equation for gas will be written as:
PV = nRT, where
P = pressure of gas = 200 kPa
n = moles of gas = 0.2 mole
T = temperature of gas = 400K
R = universal gas constant = 8.314 L.Pa/K.mole
V = to find?
On putting all these values on the above equation, we calculate for V as:
V = (0.2×8.314×400) / 200 = 3.325 = 3.33 L
Hence, option (2) is correct i.e. 3.33 L.
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A 1.000 g sample of an unknown hydrate of copper chloride is gently dehydrated. The copper is isolated and weighs 0.248 g. Develop a method for determining the empirical formula of the copper compound and for determining the percent by mass of copper in the compound. Remark: The experimental data table obtained by the student is shown below. Data: Mass of crucible 20.43 g Mass of crucible + CuxCly • zH2O. 21.43 g Mass of crucible + CuxCly 20.976 g
Based on the data provided, the empirical formula of the compund is CuCl2.6H20 and the percentage mass of copper is 24.8%.
What is empirical formula?Empirical formula is a formula showing the simplest ratios in which elements in the compund are combined.
From the data provided:
Mass of Hydrated Copper chloride = 1.00 g
Mass of dehydrated Copper chloride = 20.976 - 20.43 = 0.546 g
Mass of Water = 21.43 - 20.976 = 0.454 g
Mass of Copper = 0.248 g
Masd of Chlorine = 1.00 - (0.454 + 0.248) = 0.298
Mole ratio:
Cu = 0.248/64 = 0.004
Cl = 0.298/35.5 = 0.008
H2O = 0.454/18 = 0.025
Dividing with the smallest value:
Cu = 0.004/0.004 = 1
Cl = 0.008/0.004 = 2
H2O = 0.025/0.004 = 6
Therefore;
Empirical formula = CuCl2.6H20
Percentage mass of copper = 0.248/1.00 × 100%
Percentage mass of copper = 24.8%
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what is chemical change? what are some ways to tell chemical change happened?
Answer:
A chemical change occurs when the reactants chemical compositions have changed
Explanation:
a change in colour, change in temperature, change in smell, formation of a precipitate, or the formation of gas bubbles
Hopes this helps
HELP DUE TODAY
Identify three characteristics that will be passed down to the offspring of this apple tree.
its a write your answer
Answer:
eyes hair skin
Explanation:
eyes you can get from parents skin and hair
Is it possible to modify the gases in our atmosphere?
Answer:
Yes, but it would a tremendous amount of time to do so
Explanation:
You could just spray a ton of hydrogen in the atmosphere and turn the oxygen to water
What is one way to move carbon from fossil fuels into the atmosphere?.
When the nonelectrolyte glucose is dissolved in water, the solution contains ________.
a. all glucose molecules
b. all glucose ions
c. nothing
d. mostly glucose molecules and a few ions
e. only OH- ions
What is the three-dimensional shape of the molecule with this Lewis structure? A. Bent B. Linear C. Tetrahedral D. Trigonal planar.
Lewis structure is the electron dot representation of the atomic and molecular bonds of the molecules. Trigonal planar is the shape of the formaldehyde.
What is a trigonal planar shape?A trigonal planar shape of the molecule is the arrangement of the central atom attached to the other three atoms making them look triangle-shaped.
The attachment of the carbon to the two hydrogens and one oxygen atom can be given by the VSEPR theory. The number of the electron pair in the molecule is 3 making them [tex]\rm sp_{2}[/tex] hybridized and hence have a trigonal planar shape.
Therefore, option D. trigonal planar is the shape.
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If fluorine is stronger than carbon, what charge will the fluorine receive?
a. partially negative
b. partially positive
c. positive
d. negative
explain why
If fluorine is stronger than carbon, fluorine will receive a negative charge.
WHAT IS THE ELECTRONEGATIVITY SERIES?The electronegativity series is the order in which elements of the periodic table are ranked in terms of their negative charges.
Elements with higher electron affinity are positioned higher in the series. According to this question, fluorine is stronger than carbon.
This means that fluorine will receive a negative charge (-) to become more electronegative.
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Help!!!
An unknown salt was dissolved to make a total 1.53g of solution. The temperature of the water decreased from
24.3C to 20.3C when 8mol were dissolved. What is the heat of solution in J/mol?
Answer:
3.213J/mol
Explanation:
first specific heat capacity of water = 4200J/Kg K
Q=mass×temperature difference×specific heat capacity
Q=1.53×(24.3-20)×4200
Q=25.704 J
heat of solution= quantity of heat ÷ amount of substance
heat of solution= 25.704÷8
heat of solution= 3.213J/mol
How to answer part A?
Answer:
H2C3H2O4 + 2KOH → K2C3H2O4 + 2H2O
What behavior of sound waves causes echoes? A. absorption B. reflection C. refraction D. transmission
You want to spread honey on your toast, but it is too thick to spread. What term from today's lesson describes the "thickness" of the honey? How could you change the "thickness" of the honey?
Answer:
Since I was not present in your lesson, I can only guess your vocabulary words. I am guessing consistency though.
How much iodine should you take if exposed to radiation.
Answer:
12-18 65mg or sometimes 130mg if its just one or 1/2 a tablet
Explanation:
Can someone please help me? :(
Answer:
C D
Explanation:
NOAA airplanes continuously transmit measurements of pressure, humidity, temperature, and wind direction and speed as they fall toward the sea, providing a detailed look at the structure of the storm and its intensity.
What is the correct practice for minimizing exposure during a hazardous chemical spill?.
[tex]Important[/tex] [tex]Procedures[/tex]
▬▬▬▬▬▬▬▬▬
Wear these items...
GlovesGogglesLab coat∴ Hope this helps! Please give thanks. ∴
To prevent inhaling spill vapors. Avoid attempting to clean up a spill if it is in an area that isn't well-ventilated. Send out a call for help to respond to and clean up the spill.
Additionally, more severe side effects include breathing problems, coughing, wheezing, a faint feeling, or weakness that may result from significant chemical exposure. The most dangerous substances can cause immediate collapse, convulsions, and possibly even death.
Wearing personal protection equipment (often known as "PPE") helps reduce exposure to a number of risks. Gloves, foot, and eye protection, protected hearing equipment (earplugs, muffs), hard helmets, respirators, and complete body suits are a few examples of PPE.
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#SPJ3
Explain what is respiration in your own words..
Answer:
Plants using glucose to make ATP molecules during the process of photosynthesis which results in the plant releasing oxygen.
This is cellular respiration. ↑
9.0 x 10^23 molecules of CCI4 dissolved to make 500 mL of solution. Find molarity
Answer: 1.34 M
Explanation:
What is Delta.Hrxn for the overall reaction?
kJ
Answer:
The enthalpy change of the reaction comes out to be -890 Kj Explanation:To calculate the enthalpy of the reaction divided in multiple steps, we use Hess's law. This law states that the heat absorbed or evolved in a given chemical equation remains same whether the process occurs in one step or several steps.To apply this law, the enthalpy of the chemical equation is treated as ordinary algebraic expression and it can be added or subtracted to form the required equation. This means that the enthalpy change of the overall reaction is equal to the sum of the enthalpy changes that occur during intermediate reactions.
Explanation:
Answer:
A few definitions:
1. A river delta is a land-form created by deposition of sediment that is carried by a river as the flow leaves its mouth and enters slower-moving or stagnant water. This occurs where a river enters an ocean, sea, estuary, lake, reservoir, or another river that cannot carry away the supplied sediment.
2. The fourth letter of the Greek alphabet ( Δ, δ ), transliterated as ‘d’.
3. a code word representing the letter D, used in radio communication, mostly in the military
4. variation of a variable or function.
5. a finite increment.
This is not a plagiarized passage this is my knowledge and research.
What is potential energy?
A. stored energy
B. the energy of motion
C. the energy of light
D. the energy at the bottom of a roller coaster
Answer:
A. stored energy
Explanation:
potential energy is stored energy.
kinetic energy is the energy of motion
what is the volume of 5 moles of oxygen gas at r.t.p
explain the three laws of chemical reaction in detain gilling examples
Answer:
The three laws of Chemical Reaction are .The law of constant proportions. The law of multiple proportions. The law of reciprocal proportions.
A chemical compound is always found to be made up of the same elements combined together in the same fixed proportion by mass.
potassium and chlorine gas ---> chloride.
Hope this helps, have a good day.✌
deacribe strata! as short of an answer as possible please and help asap for brainliest
Answer:
sedimentary rock layer bounded by two stratification planes
The combustion of c2h4(g) is represented by the equation above. (a) use the enthalpies of formation in the table below to calculate the value of δh∘1 for the reaction
Based on Hess law of constant heat summation, the enthalpy of the combustion of C2H4 can be calculated from the heat of formation values of the products CO2 and H2O.
What is a combustion reaction?A combustion reaction is a reaction between a substance and oxygen in which light and large amounts of heat is given off.
The amount of heat evolved when one mole of that substance reacts completely with oxygen is known as the enthalpy of combustion of that substance.
The equation of the combustion of C2H4 is given below:
C2H4 + 3 O2 ---> 2 CO2 + 2H2OThe enthalpy of the combustion of C2H4 can be calculated from the heat of formation of the products CO2 and H2O based on Hess law.
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In an aqueous solution which substance yields hydrogen ions as the only positive ion *
Answer:
CH3COOH
Explanation:
1. Differentiate Physical and chemical changes of matter?
2. In the reaction below, which substances are considered reactants?
C2H60
+
O2
CO2
+
H2O
which of these are considered reactants
Answer:
see below
Explanation:
All of them are considered reactants because a reactant is a a substance that takes part in and undergoes change during a reaction.
In areas without excessive light pollution, a band of light can be seen spanning the night sky. This band of light comes from OA. Stars at the edge of the universe. OB. Planets in the solar system. Ос. Moons in the solar system. OD. Stars in the Milky Way.
Answer:
In areas without excessive light pollution, a band of light can be seen spanning the night sky ... - did not match any news results.
Suggestions:
Explanation:
Answer:
stars in the milky way
Explanation:
The band of light that can be seen spanning the night sky comes from stars in the Milky Way Galaxy. The Milky Way Galaxy is a spiral galaxy that contains hundreds of billions of stars.
Which statement accurately describes differences between RNA and DNA?
Group of answer choices
RNA contains the nitrogenous base thymine, while DNA contains the nitrogenous base uracil.
RNA always folds into a single helix while DNA always folds into a double helix.
RNA contains pyrimidine bases, while DNA contains purine bases.
The nucleotides in DNA contain one phosphate group while those in RNA contain two phosphate groups.
The sugar in DNA contains one less hydroxyl group than the sugar in RNA.
Answer:
RNA always folds into a single helix while DNA always folds into a double helix.
I hope this helps you
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