Explanation:
[tex]19.87mol \times \frac{22.4lit}{1mol} = 445.088lit \: [/tex]
Convert 5.70 Kilograms to milligrams. Show your work!
Answer:
5.7e+6
Explanation:
Multiply the value in kilograms by the conversion factor '1000000'.
So, 5.7 kilograms = 5.7 × 1000000 = 5700000 milligrams.
To convert kilograms to milligrams, we need to remember that there are 1,000 grams in a kilogram and 1,000 milligrams in a gram. From this, 5.70 kilograms is equal to 5,700,000 milligrams.
1 kilogram (kg) is equivalent to 1,000 grams (g). This is a conversion factor that allows us to convert from kilograms to grams.
Additionally, 1 gram (g) is equivalent to 1,000 milligrams (mg). This is another conversion factor that allows us to convert from grams to milligrams.
To convert 5.70 kilograms to milligrams, we can use these two conversion factors:
5.70 kilograms × (1,000 grams / 1 kilogram) × (1,000 milligrams / 1 gram)
First, we multiply 5.70 kilograms by the conversion factor of 1,000 grams / 1 kilogram. This eliminates the kilograms unit and leaves us with grams:
5.70 kilograms × 1,000 grams / 1 kilogram = 5,700 grams
Next, we multiply 5,700 grams by the conversion factor of 1,000 milligrams / 1 gram. This eliminates the grams unit and leaves us with milligrams:
5,700 grams × 1,000 milligrams / 1 gram = 5,700,000 milligrams
Therefore, 5.70 kilograms is equal to 5,700,000 milligrams.
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Use the oxidation states as indicated by the superscript numbers to answer the questions. k( 1)cl( 5)o3(-2) → k( 1)cl(-1) o2(0) which element is oxidized? which element is reduced? which element does not change in the oxidation state? how many electrons will be moved to have a balanced reaction?
Oxygen gets oxidized and potassium and chlorine get reduced. The number of electrons moving to have a balanced reaction is 6.
What is an oxidation number?The number of allocated elements in a chemical combination is termed an oxidation number. The oxidation number is generally the count of the number of electrons that a molecule or atom shares, loses, or gains during bond formation.
The given chemical equation will be
[tex]\rm 2K ^+ + 2Cl^+ + 2O_3^{2-} = 2KClO_3[/tex]
In this reaction, oxygen gets oxidized and potassium and chlorine get reduced.
The number of electrons moving to have a balanced reaction will be
Number of electron = 2 × 3 = 6
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Answer:
Answer down below
Explanation:
Convert 4.0 moles of N2 gas to liters.
Convert 4.0 moles of N2 gas to liters.
Answer :-1mole = 22.4 lts of any gas
unitary method :-
so we can say 4 moles = 4 × 22.4 lts of gas
4 moles of N2 gas = 89.6 lts of N2 gas
Two blocks of platinum have a temperature of 200°C. One block has a mass of 10 g, the other block has a mass of 100 g. Do the blocks have the same amount of thermal energy? Explain.
The two blocks have the same amount of thermal energy.
Effect of temperature on different mass objectsDue to platinum metal, the thermal energy is equally distributed in the whole metal so that's equal distribution the thermal energy of both blocks will be the same so we can conclude that the two blocks have the same amount of thermal energy.
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What is the reason of formation of millions of organic compound
Which of the following statements explains why the bond in
hydrogen chloride (HCI) is polar covalent?
o The diameter of a chlorine atom is greater than that
of a hydrogen atom.
o The atomic mass of chlorine is greater than that of
hydrogen.
o The number of valence electrons in a chlorine atom
is greater than that in a hydrogen atom.
o The electronegativity of chlorine is greater than that
of hydrogen.
Answer:
The atomic mass of chlorine is greater than that of hydrogen
If ammonia is manufactured at 356 K, is the reaction spontaneous, given that the enthalpy and entropy change for the reaction are -93 kJ/mol and -198 J/mol K, respectively?
A. Yes, the ∆G is -22.5 kJ/mol.
B. No, the ∆G is 22.5 kJ/mol.
C. No, the ∆G is 92kJ/mol.
D. Yes, the ∆G is -92kJ/mol.
A. Yes, the ∆G is -22.5 kJ/mol.
Further explanationGibbs free energy is the maximum possible work given by chemical reactions at constant pressure and temperature. Gibbs free energy can be used to determine the spontaneity of a reaction
If the Gibbs free energy value is <0 (negative) then the chemical reaction occurs spontaneously. If the change in free energy is zero, then the chemical reaction is at equilibrium, if it is> 0, the process is not spontaneous
Free energy of reaction (G) is the sum of its enthalpy (H) plus the product of the temperature and the entropy (S) of the system
Can be formulated: (at any temperature)
[tex]\large {\boxed {\bold {\Delta G = \Delta H-T. \Delta S}}}[/tex]
or at (25 Celsius / 298 K, 1 atm = standard)
[tex]\tt \Delta G=-93-(356\times -0.198)\\\\\Delta G=-22.512~kJ/mol[/tex]
ΔG<0 ⇒ reaction spontaneous
How many sodium ions are in 58.5 grams of sodium chloride?
Answer:
NaCl contains 12.046 x 1023 ions.
Explanation:
:p
3. What will you observe (the dependent variable) as a result of that change?
After a day at the beach, bodysurfing and hunting for shark teeth, your parent’s yell that it is time to leave. You grab your sandals and towel and run towards the parking lot. Thirty seconds later you feel like you are walking on hot coals. Explain the sudden change
Answer:
There was a change in temperature on the surface you were walking on. It is possible that "you" were walking on cool, wet sand and when your parents said it was time to leave, you ran barefoot towards the parking lot (away from the sand) and got a burning coal sensation on your feet.
Explanation:
what is galvanic or voltaic cell?
Answer:
An electrochemical cell that converts the chemical energy of spontaneous redox reactions into electrical energy is known as a galvanic cell or a voltaic cell. Galvanic cell Voltaic cell is an electrochemical cell that makes use of chemical reactions to generate electrical energy....
HOPE THIS HELPS, HAVE A GREAT DAY!!
Explanation:
Answer:
A galvanic cell or voltaic cell, named after the scientists Luigi Galvani and Alessandro Volta, respectively, is an electrochemical cell in which an electric current is generated from spontaneous Oxidation-Reduction reactions.
From internet..hope it helps you:)
Explanation:
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Stoichiometry Stumper
You are a forensic scientist. You are investigating a murder involving poison. The victim was poisoned with a compound called di-chloro benzene whose formula is C6H4Cl2. Autopsy results show that the victim’s body contained about 31 g of the poison, but the actual amount could have been slightly higher due to tissue absorption. The main suspect is his wife, Suzanne, who works as a chemistry professor at the local university. Records show that she purchased 15 g of benzene (C6H6) two days before the murder. Benzene is one of the compounds used to make the poison, but she claims she was using it to make ethyl benzene (C6H5CH3), an innocuous compound, for use in her lab. She shows you the bottle of ethyl benzene she claims to have made. It contains 25 grams of ethyl benzene.
Is she telling the truth or did she have more nefarious motives? If you can show that it is possible to produce 25 g of ethyl benzene from 15 grams of benzene, then she was telling the truth. Otherwise, you will have caught her in a lie, which makes it likely she killed her husband with the poison. After extensive research in the literature, you find the two reactions related to this case. Show all work.
From the calculation, Suzanne is lying and she is guilty of killing her husband.
What is stoichiometry?Stoichiometry provides a means of calculating the relationship between mass and mole or mole and volume in a reaction.
Now the preparation of ethylbenzene goes according to the reaction;
C6H6 + C2H6 ---->C6H5C2H5 + H2
Number of moles of benzene = 15 g/78 g/mol = 0.192 moles
Number of moles of ethyl benzene= 25 g/106 g/mol = 0.236 moles
Since the reaction is 1:1, 0.192 moles of ethyl benzene is produced.
Mass of 0.192 moles of ethylbenzene = 0.192 moles * 106 g/mol = 20.4 g
Suzanne is lying.
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A car is traveling 76.4 kilometers per hour. What is its speed in miles per minute?
Explanation:
speed
76.4/1.609 kilometres to mile =47.47
1hour to minutes=1×60
=60
speed in miles per minute 47.47mile per minute or mph
Fill in the coefficients that will balance the following reaction:
__C₂H₂+__O2–>__CO2 +__H2O
Explanation:
C3H8 + 5O2 -> 3CO2 + 4H2O
C2H2 + 2.5O2 -> 2CO2 + H2O
10. Summarize the effect of hydrogen bonding on boiling point.
11. Hydrogen fluoride (HF) has a lower boiling point than water, even though fluoride (F) has a greater electronegativity than oxygen (O). Why do you think that is?
Answer:
10. it increases the boiling point because it is a stone bond and will require much energy to break it.
11.So, to boil liquid water, all hydrogen bonds have to be broken and it requires a large amount of energy. This isn't the case in HF; all hydrogen bonds need not to be broken, and therefore a lesser amount of energy is required. So HF boils at a much lower temperature as compared to water even though F has high electronegativity but the force of attraction or the intermolecular is is weak
In the combustion of methane, 810 kilojoules per mole (16 grams) is released. Compare this with the fission of uranium-235. The fission of uranium-235 releases 107 kilojoules per mole.
How much mass is lost in the fission reaction?
∆m = E/C2 (where c = 3.00 × 108 m/s)
1.189 x 10⁻¹² kg is lost when uranium-235 undergoes fission
In a fission reaction, the nucleus of an atom is broken down into two smaller particles. This is usually seen in heavy and unstable nucleiThe fission of uranium-235 releases 107 kJ/mol
We know that the formula for mass-energy equivalence is
E=mc²
c = 3 x 10⁸ m/s
107000 J= m x (3 x 10⁸ m/s)²
107000 = m x 9 x 10¹⁶
m = 1.189 x 10⁻¹² kg
In the fission of 1 mole of uranium, 1.189 x 10⁻¹² kg is lost in the reaction
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Answer:
edmentum sample answer
Explanation:
What is energy, and what is its unit of measure?
Answer:
Energy is measured in joules. And it is a derived unit. An example that you use in energy is horsepower.
On the web an easy definition: Kinetic energy is motion; it is the motion of waves, electrons, atoms, molecules, substances, and objects.
Also, everything consists of energy. For example, when you turn a page from a book, that is using energy. Or when a ball is rolling down a ramp, it is using kinetic energy. You can also have potential energy, which is the energy stored in something when it isn't moving. For example, when the ball is about to roll on the ramp, it is in its starting point with potential energy.
And finally elastic energy:
Elastic energy is the mechanical potential energy stored in the configuration of a material or physical system as it is subjected to elastic deformation by work performed upon it. Elastic energy occurs when objects are impermanently compressed, stretched or generally deformed in any manner.
For example, an elastic string. When you stretch it, it is the potential anergy stored in the string you are stretching. When you release it, it flies in the air and changes to kinetic energy.
Answer:
Energy is the ability to do work (Quantitative property that must be transferred to an object to perform work on)
Measured in Joule(s)
The temperature of aluminum increases from 30.0 to 38.0 °C and absorbed 900.J. Calculate the mass of aluminum used if the specific heat is 0.902 J/gK.
please help!!!!
Answer:
The mass of aluminum is 124.72 g
Explanation:
Calorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.
Sensible heat is the amount of energy that causes a change in the temperature of a substance. In other words, sensible heat is that heat that causes the temperature of an object to vary without affecting its molecular structure and therefore its physical state. Its mathematical expression is:
Q = c * m * ΔT
where Q is the heat exchanged by a body of mass m, constituted by a substance of specific heat c and where ΔT is the variation in temperature.
In this case:
Q= 900 Jc= 0.902 [tex]\frac{J}{g*K}[/tex]m= ?ΔT= Tfinal - Tinitial= 38 °C - 30°C= 8°C as it is a temperature difference, it is indistinct if the temperature is expressed in ° C or ° K because the difference will be the same. So: ΔT= 8°C= 8 °KReplacing:
900 J= 0.902 [tex]\frac{J}{g*K}[/tex] *m* 8 °K
900 J= 7.216 [tex]\frac{J}{g}[/tex] *m
[tex]\frac{900 J}{7.216\frac{J}{g} } =m[/tex]
124.72 g=m
The mass of aluminum is 124.72 g
How much heat is needed to raise the temperature of 50 g of a substance by 15°C when the specific heat is 0.92 J/g-°C?
A.) 65 J
B.) 250 J
C.) 345 J
D.) 690 J
Answer:
690j
Explanation:
Use the formula
q
=
m
C
Δ
T
q = heat absorbed or released, in joules (J)
m = mass
C = specific heat capacity
ΔT = change in temperature
Plug known values into the formula.
q
=
50
(
.92
)
(
15
)
q
=
690
therefore, 690 joules of heat energy are needed.
What are two external structures that help a frog survive?
Answer:
muscular jumping leg (helps them escape predators, chase after prey), webbed foot (helps them live in both aquatic and land environments), and they can store poison (that is used to attack or defend) in their glands
Explanation:
:)
Gravity affects the of an object but not its .
Answer:
weight, mass
Explanation:
Gravity affects the weight of an object but not its mass. Your body's weight can change on different planets, but your mass will ALWAYS stay the same.
Answer:
Gravity affects the weight of an object but not its mass.
Explanation: plato :3
Hope this helps!
Complete and balance the following oxidation-reduction reaction in basic solution
The balanced oxidation-reduction reaction in basic solution is:
6 ClO⁻(aq) + 2 Cr(OH)₃(s) ⇒ 3 Cl₂(g) + 2 OH⁻(aq) + 2 CrO₄²⁻(aq) + 2 H₂O(l)
What is an oxidation-reduction reaction?An oxidation-reduction (redox) reaction is a type of chemical reaction that involves a transfer of electrons between two species.
Let's consider the following unbalanced redox reaction.
Cr(OH)₃(s) + ClO⁻(aq) ⇒ CrO₄²⁻(aq) + Cl₂(g)
We will balance it using the ion-electron method.
Step 1. Identify both half-reactions.Reduction: ClO⁻(aq) ⇒ Cl₂(g)
Oxidation: Cr(OH)₃(s) ⇒ CrO₄²⁻(aq)
Step 2. Perform the mass balance by adding H₂O and OH⁻ where necessary.2 H₂O(l) + 2 ClO⁻(aq) ⇒ Cl₂(g) + 4 OH⁻(aq)
5 OH⁻(aq) + Cr(OH)₃(s) ⇒ CrO₄²⁻(aq) + 4 H₂O(l)
Step 3. Perform the charge balance adding electrons where necessary.2 H₂O(l) + 2 ClO⁻(aq) + 2 e- ⇒ Cl₂(g) + 4 OH⁻(aq)
5 OH⁻(aq) + Cr(OH)₃(s) ⇒ CrO₄²⁻(aq) + 4 H₂O(l) + 3 e-
Step 4. Multiply both half-reactions by numbers that make the number of electrons gained and lost to be the same. Then, add them.3 . (2 H₂O(l) + 2 ClO⁻(aq) + 2 e- ⇒ Cl₂(g) + 4 OH⁻(aq))
2 . (5 OH⁻(aq) + Cr(OH)₃(s) ⇒ CrO₄²⁻(aq) + 4 H₂O(l) + 3 e-)
-----------------------------------------------------------------------------------
6 H₂O(l) + 6 ClO⁻(aq) + 6 e- + 10 OH⁻(aq) + 2 Cr(OH)₃(s) ⇒ 3 Cl₂(g) + 12 OH⁻(aq) + 2 CrO₄²⁻(aq) + 8 H₂O(l) + 6 e-
6 ClO⁻(aq) + 2 Cr(OH)₃(s) ⇒ 3 Cl₂(g) + 2 OH⁻(aq) + 2 CrO₄²⁻(aq) + 2 H₂O(l)
The balanced oxidation-reduction reaction in basic solution is:
6 ClO⁻(aq) + 2 Cr(OH)₃(s) ⇒ 3 Cl₂(g) + 2 OH⁻(aq) + 2 CrO₄²⁻(aq) + 2 H₂O(l)
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Lithium, sodium, and potassium are Group I metals. Explain why these metals cannot be extracted from their ores by heating the ores with carbon.
Answer:
Explanation:
Metals in the top of the reactivity level i.e. metals like sodium, magnesium, calcium, etc cannot be obtained from their compound by heating with carbon as they are very reactive. Electrolytic reduction is used to obtain such metals.
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Which one is a process in which water changes into vapours in atmosphere?
(a) Evaporation
(b) transpiration
(c) Precipitation
(d) condensation
Answer:
a
Explanation:
Which statement best describes how chemical equations demonstrate conservation of mass?
Lavoisier's Law states:
'Mass is neither created nor destroyed' in chemical reactions.
SCIENCE ANSWER THIS IF YOUR IN 5TH GRADE K12
Answer: moon earth
Explanation: because the earth is rocky and has mountains so does the moon. Hope this helps!
Answer:
The Earth should be the answer.
What air pollutants can result from burning fuelwood?
Answer:
These air pollutants consist of...
Carbon monoxideNitrogen oxidesClimate changeFossil fuelsOrganic compounds. Just because they are organic does not mean they are good for the environment.
A sample of water has a mass of 100.0 g. calculate the amount of heat required to change the sample from ice at -45.0°c to liquid water at 75.0°c. use the chart to complete the multiple steps required to arive at the final answer. type in your answers below using 3 digits. q1 = kj q2 = kj q3 = kj qtot = kj
The amount of sensible and latent heat of mass of 0.1 kg of water will be q₁ = 9.486 kJ, q₂ = 226 kJ, q₃ = 31.5 kJ, and [tex]\rm q _{total } = 226.986[/tex] kJ.
What is thermodynamics?It is a branch of science that deals with heat and work transfer.
A sample of water has a mass of 100 g.
The amount of heat required to change the sample from ice at -45.0°C to liquid water at 75.0°C.
We know that the state of water from -45.0°C to 0°C is solid that requires sensible heat (q₁), 0°C solid to 0°C liquid is a transition that requires latent heat (q₂), and 0°C to 75.0°C is liquid that requires sensible heat (q₃).
m = 0.1 kg
The specific heat capacity of ice is 2.108 kJ/kg-K.
The specific heat capacity of water is 4.18 kJ/kg-K.
The latent heat of water at 0°C is 2260 kJ/kg.
The sensible heat is required for ice from -45.0°C to 0°C will be
q₁ = m × c × (T₂ - T₁)
q₁ = 0.1 × 2.108 × [0 - (-45)]
q₁ = 9.486 kJ
The latent heat is required for ice to water at 0°C will be
q₂ = m × LH
q₂ = 0.1 × 2260
q₂ = 226 kJ
The sensible heat is required for water from 0°C to 75.0°C will be
q₃ = m × c × (T₂ - T₁)
q₃ = 0.1 × 4.18 × (75 - 0)
q₃ = 31.35 kJ
The total energy will be
[tex]\rm q _{total } = q_1 + q_2 +q_3\\\\q _{total } = 9.486 + 226 + 31.5\\\\q _{total } = 226.986[/tex]
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Answer:
q1 = ⇒ 9.42 kJ
q2 = ⇒ 226 kJ
q3 = ⇒ 31.4 kJ
qtot = ⇒ 267 kJ
Explanation:
given a mixture of aluminium chloride,zinc carbonate and barium nitrate briefly explain how you can obtain a pure sample of each
Answer:
electrolysis or iron extraction in the trunk furnace
Alcohol is removed by the _________ blank at a constant rate of 0.25 to 0.30 ounce of ethanol per hour
Answer:
Liver
Explanation:
Some of these intermediate metabolites can have harmful effects on the body. Most of the ethanol in the body is broken down in the liver by an enzyme called alcohol dehydrogenase (ADH), which transforms ethanol into a toxic compound called acetaldehyde (CH3CHO), a known carcinogen.