Answer:
two unpaired electrons
Explanation:
each of which are located in a different pi* antibounding orbital.
The change in free energy can best be described as
A. the energy level of the reactants.
B. the maximum energy level of the reaction.
C. the difference in energy between reactants and products.
D. the energy level of the products.
E. the difference in energy between reactants and the maximum energy.
Answer:
Letrang A o B o C o D or Letter A or B or C or D
What is the new temperature when 10L at 5K is compressed to 4.00L?
Answer:
2k
Explanation:
If the energy of a photon is [tex]3.34[/tex]×[tex]10^{-20}[/tex] J, what is the wavelength of that light?
Answer:
thats what I know please check if it's correctA hot metal plate at 150°C has been placed in air at room temperature. Which event would most likely take place over the next few minutes?
Molecules in both the metal and the surrounding air will start moving at lower speeds. Molecules in both the metal and the surrounding air will start moving at higher speeds. The air molecules that are surrounding the metal will slow down, and the molecules in the metal will speed up.
The air molecules that are surrounding the metal will speed up, and the molecules in the metal will slow down.
When the volume of a gas is changed from 11.5 cm3 to __ cm3, the temperature will change from 415.0 K to 200.0 K
Answer:
Explanation:
Charles Law: The volume of and ideal gas is directly proportional to the temperature when the pressure is kept constant
V₁ - initial Volume = 11.5 cm³ ; T₁ = Initial temperature = 415 K ;
V₂ - final volume ;T₂ =final temperature = 200 K
[tex]\dfrac{V_{1}}{T_{1}}=\dfrac{V_{2}}{T_{2}}\\\\\\\dfrac{11.5}{415}=\dfrac{V_{2}}{200}\\\\\\\dfrac{11.5}{415}*200=V_{2}\\\\\\V_{2}=5.5 \ cm^{3}[/tex]
which set of elements have chemical properties similar to carbon
Element Si, Ge, Sn, Pb have similar properties to carbon.
Reasons:
They all belong to same group i.e. group 14All elements have valency four.The electronic configuration of all elements is similar i.e. nS² nP²Thanks for joining brainly community!
Why did humans overhunt the Caribbean monk seal to extinction?
Question 3 options:
for their fur
for their blubber
for their bones
for their flippers
Answer:
for their fur
Explanation:
because the body is hunt
What is the average mass (in grams) of a single chlorine dioxide molecule?
Answer:
35.5 is the answer
Explanation:
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Which three sentences describe how a cyclone device works?
Helpppp helpppp plsssss
A volume v =40ml of distilled water is added to volume vi =10ml of sugar_water solution of concentration ci=0.3mol.L-1
1) calculate the concentration cf of obtained solution
2) deduce the number or factor of dilution?
[tex]\Large \text{1)}[/tex]
[tex]\textbf{Use the formula and substitute the values}[/tex]
[tex]\displaystyle 0.3\ mol/L = \frac{n \ mol}{10 \times 10^{-3}\ L}[/tex]
[tex]\textbf{Solve for the number of moles}[/tex]
[tex]n = 0.003\ mol[/tex]
[tex]\textbf{Calculate final volume }[/tex]
[tex]40+10=50\ mL[/tex]
[tex]\textbf{Number of moles remains same. Solve for concentration}[/tex]
[tex]\displaystyle C=\frac{0.003\ mol}{50 \times 10^{-3}\ L} =0.06\ mol/L[/tex]
[tex]\Large \text{2)}[/tex]
[tex]\displaystyle DF=\frac{V_f}{V_i}[/tex]
[tex]\displaystyle DF=\frac{50}{10}=5[/tex]
A solution of sodium oxalate (Na 2C 20 4) in acidic solution is titrated with a solution of potassium permanganate (KMnO 4) according to the following
balanced chemical equation:
2KMnO4(aq) + 8H2SO4(aq) + 5Na2C204(aq) 2MnSO4(aq) - 8H20() +10C02(9) + SNa2SO4(aq) + K2SO4(aq)
What volume of 0.0206 M KMnO4 is required to titrate 0.176 g of Na2C204 dissolved in 50.0 mL of solution?
O a. 8. 54 ml
O b. 500 ml
OC 25 5 ml
O d.3.42 m
e. 63 8 ml
X
The volume of 0.0206 M KMnO₄ required to titrate 0.176 g of Na₂C₂O₄ dissolved in 50.0 mL of solution is 25.5 mL (Option C)
How to determine the mole of Na₂C₂O₄Mass of Na₂C₂O₄ = 0.176 gMolar mass of Na₂C₂O₄ = 134 g/mol Mole of Na₂C₂O₄ =?
Mole = mass / molar mass
Mole of Na₂C₂O₄ = 0.176 / 134
Mole of Na₂C₂O₄ = 1.313×10¯³ mole
How to determine the mole of KMnO₄2KMnO₄ + 8H₂SO₄ + 5Na₂C₂O₄ —> 2MnSO₄ + 8H₂O +10CO₂ + 5Na₂SO₄ + K₂SO₄
From the balanced equation above,
5 moles of Na₂C₂O₄ reacted with 2 moles of KMnO₄
Therefore,
1.313×10¯³ mole of Na₂C₂O₄ will react with = (1.313×10¯³ × 2) / 5 = 5.252×10¯⁴ mole of KMnO₄
How to determine the volume of KMnO₄Mole of KMnO₄ = 5.252×10¯⁴ moleMolarity of KMnO₄ = 0.0206 MVolume of KMnO₄ =?Volume = mole / molarity
Volume of KMnO₄ = 5.252×10¯⁴ / 0.0206
Volume of KMnO₄ = 0.0255 L
Multiply by 1000 to express in mL
Volume of KMnO₄ = 0.0255 × 1000
Volume of KMnO₄ = 25.5 mL
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Sunlight, wind, and water are considered ____resources.
Question 3 options:
renewable
nonliving
fossil
nonrenewable
Sunlight, wind, and water are considered renewable resources
PLEASE HELP ME ASAP SCREENSHOT DOWN BELOW
Answer:
Elevation.
Explanation:
Although latitude is a very important factor in temperature, Las Vegas and Mt. Charleston are pretty close to each other, which makes me think that elevation would be the only thing that could explain the extreme difference in temperature.
If we have 2 L of oxygen in a jar and 2 L of hydrogen in another jar at STP. Number of molecules
A. of oxygen is greater than hydrogen
B. of oxygen is smaller than hydrogen.
C. are equal in both Jars.
A certain sample of calcium carbonate contains 4.68 moles. what is the mass of the CO3 ions present?
what is the mole ratio of O2 (g) to CO2 (g)?
Answer:
O2=1
CO2=2
1:2
aah its the answer
is snowflake a mixture or substance?
Abby feeds her dog one and a half cups of food each day and Braxton feed his dog for out of goon
Braxtons dog eats 3 times more than Abbys
Answer:
Braxton's dog eats 3 times more food.
Explanation:
Balance the following chemical equation (if necessary):
C5H10O(I) + O2(g) ==> H2O(g) + CO2(g)
Answer:
C₅H₁₀O (l) + 7 O₂ (g) --> 5 H₂O (g) + 5 CO₂ (g)
Explanation:
In the original equation: C₅H₁₀O (l) + O₂ (g) --> H₂O (g) + CO₂ (g)
Reactants: 5 carbon, 10 hydrogen, 3 oxygen
Products: 1 carbon, 2 hydrogen, 3 oxygen
Cleary, the equation is not balanced. When deciding which element to balance first, avoid balancing elements that are present in more than one molecule on either side (ex. the oxygen on the reactant side). In this case, I started with carbon. Once the carbon was balanced, I balanced the hydrogen, keeping in mind the new coefficients I added when balancing the carbons. Lastly, I balanced the oxygen.
The balanced equation: C₅H₁₀O (l) + 7 O₂ (g) --> 5 H₂O (g) + 5 CO₂ (g)
Reactants: 5 carbon, 10 hydrogen, 15 oxygen
Products: 5 carbon, 10 hydrogen, 15 oxygen
5.The energy level with which of the following quantum-number descriptions can contain the most electrons?
a. n = 2 , l = 1 b. n = 3, l = 2
c. n = 4, l = 3 d. n = 5 , l = 0 e. n = 5 , l = 3, m = +1
A 35.3 g of element M is reacted with nitrogen to produce 43.5 g of compound M3N2. What is (i) the molar mass of the element and (ii) name of the element?
This problem is providing us with the mass of an unknown element which produces 43.5 g of M3N2. Thus, its name and molar mass are required and found to be 4.02 g/mol and calcium nitride after the following:
Stoichiometry.In chemistry, stoichiometry is a tool used for the calculation of masses or moles involved in chemical reactions, by the utilization of molar masses and mole ratios based on proportional factors.
In such a way, for the given reaction, one can use the formulas to write the following balanced chemical equation:
[tex]3M+N_2\rightarrow M_3N_2[/tex]
Where there is a 3:1 mole ratio of the metal to the product, which means we can use the following stoichiometric setup:
[tex]35.3gM*\frac{1molM}{x}*\frac{1molM_3N_2}{3molM} *\frac{(3x+14.01*2)gM_3N_2}{1molM_3N_2}=43.5gM_3N_2[/tex]
Now, by using the numbers only, one will be able to calculate x as the atomic mass of the element M in g/mol:
[tex]35.3*\frac{1}{x}*\frac{1}{3} *\frac{3x+14.01*2}{1}=43.5\\\\\frac{105.9x+989.106}{3x}=43.5\\ \\105.9x+989.106=130.5x\\\\989.106=130.5x-105.9x\\\\x=\frac{989.106}{130.5-105.9} =40.2g/mol[/tex]
Which matches with the molar mass of calcium. Moreover, we find its name as calcium nitride.
Learn more about stoichiometry: brainly.com/question/9743981
How many atoms are in 4 L of Neon
Answer:
this is the answer to the question 0.1962
Explanation:
4/20.18
=0.1962
A container with a volume 2.0L is filled with a gas at a pressure of 1.5 atm. By decreasing the volume of the container to 1.0 L, what is the resulting pressure? Type in your answer using the correct number of significant figures . Remember to use formula for Boyles law; P1V1=P2V2
Need help with this question!!!
Answer:
P2 = 3
Explanation:
u know that:
V1 = 2.0L
P1 = 1.5 atm
V2 = 1.0L
P2 = ? (p1v1=p2v2)
1.5x2 = P2x1.0
3=P2x1.0 =>> 3.0 =P2
divided both side by 1.0 the remove 1.0 (left P2)
The pressure by decreasing the volume to 1 L will be [tex]P_2=3 \ atm[/tex]
what will be a new pressure?The given data is that
Volume [tex]V_1=2 \ Litres[/tex]
Pressure [tex]P_1=1.5\ atm[/tex]
When volume is reduced to
[tex]V_2=1\ liters[/tex]
By using Boyles Law
[tex]P_1V_1=P_2V_2[/tex]
[tex]P_2=\dfrac{P_1V_1}{V_2}[/tex]
[tex]P_2=\dfrac{2\times 1.5}{1} =3 \ atm[/tex]
Thus the pressure by decreasing the volume to 1 L will be [tex]P_2=3 \ atm[/tex]
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2 HCL (aq) + CaCO3 (s) > CaCl2 (aq) + CO2 (g) + H20 (I)
How many atoms are in a sample of iron weighing 14.56 g?
Do not report units in your answer. Report your answer in scientific
notation, with two places past the decimal point.
Answer:
1.570065717611
Explanation:
atomic mass and grams of sample, this gives you he amounts of atoms
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Thanks so much
Please can someone answer it correctly,If u answer it correctly I will mark u brilliant
They are oxidised in the body into simple sugars like glucose.
Carbohydrates #5They are also known as dietary fibres.
Roughage#6They are chemical substances that help in maintaining a healthy body.
Enzymes#8Not proper functioning of thyroid gland.
HypothyroidismA sample of neon gas has a volume of 10.0 L at 500, mm Hg. What new pressure is needed to change the
volume to 6.0 L? (T constant).
Hence, the new pressure of the neon gas is 833.3 mm Hg.
To calculate the new pressure, we apply Boyle's law
Boyle's lawBoyle's law state that, at a constant temperature, the volume of a given mass of gas is inversely proportional to its pressure.
Formula:
PV = P'V'..............Equation 1Where:
P = Initial pressure of neon gasV = Initial volume of neon gasP' = Final pressure of neon gasV' = Final volume of neon gasMake P' the subject of the equation
P' = PV/V'............ Equation 2From the question,
Given:
V = 10 LP = 500 mm HgV' = 6 LSubstitute these values into equation 2
P' = 10(500)/6P' = 5000/6P' = 833.3 mm HgHence, the new pressure of the neon gas is 833.3 mm Hg.
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The general trend in the graph shows an increase in atmospheric carbon dioxide levels from 2002 to 2006.
Describe one human activity that may have produced this increase.
Answer:
dioxide levels from 2002 to 2006.
Explanation:
Write a statement explaining your claim about which experimental setup will dissolve 100 g of
sugar in 1 liter of water at the fastest rate. Next, provide evidence to support your claim about
which setup will result in the fastest rate. Finally, provide reasoning that connects your evidence
to your claim.
Set up A will dissolve the 100g of sugar fastest in 1 L of water due to the inclusion of physical agitation in the form of stirring.
Dissolution of a solid?We have to note that energy and sometimes physical agitation are necessary in order to dissolve a solid in a liquid. In this case, we want to dissolve sugar in water.
Set up A in which the temperature is raised to 80 degrees with agitation will dissolve the 100g of sugar fastest in 1 L of water due to the inclusion of physical agitation in the form of stirring.
Learn more about dissolution of solids: https://brainly.com/question/12121267
again could someone help me on this?
Answer:
Celsius, Fahrenheit and Kelvin are the three common temperature scales.
Explanation:
Celsius, Fahrenheit and Kelvin are the three common temperature scales.