The alkali metal lithium reacted with water. Calculate how many grams, moles of hydrogen were released if 56 g of lithium reacted?
Answers
Answer:
Lithium Reaction: Hydrogen Moles
User
The alkali metal lithium reacted with water. Calculate how many grams, moles of hydrogen were released if 56 g of lithium reacted?
ChatGPT
To calculate the number of grams and moles of hydrogen released when 56 g of lithium reacts with water, we need to determine the balanced chemical equation for the reaction.
The balanced chemical equation for the reaction between lithium and water is:
2 Li + 2 H₂O -> 2 LiOH + H₂
From the equation, we can see that 2 moles of lithium react to produce 1 mole of hydrogen gas.
Now, let's calculate the moles of lithium in 56 g of lithium using its molar mass:
Molar mass of lithium (Li) = 6.94 g/mol
Moles of lithium = Mass of lithium / Molar mass of lithium
= 56 g / 6.94 g/mol
≈ 8.06 mol
Since 2 moles of lithium produce 1 mole of hydrogen, we can calculate the moles of hydrogen produced:
Moles of hydrogen = (Moles of lithium) / 2
= 8.06 mol / 2
= 4.03 mol
Finally, we can calculate the grams of hydrogen using the molar mass of hydrogen:
Molar mass of hydrogen (H₂) = 2.02 g/mol
Grams of hydrogen = Moles of hydrogen × Molar mass of hydrogen
= 4.03 mol × 2.02 g/mol
≈ 8.15 g
Therefore, when 56 g of lithium reacts with water, approximately 4.03 moles (or 8.15 grams) of hydrogen gas are released.
Related Questions
which particle is gained and lost during a redox process?
Answers
Answer:
electrons
Explanation:
A redox reaction is one in which oxidation and reduction takes place. in the sense of
oxidation being the loss of electrons and reduction the gain of electrons.
Which type of cell is a complete organism that can live on its own
Answers
such as an amoeba are free-floating and independent-living. Their single-celled "bodies" are able to carry out all the processes of life such as metabolism and respiration without help from other cells.
I WILL MARK AS THE BRAINLIEST I REALLY AM STRUGGLING HERE
A 0.674M cobalt(II) chloride (CoCl2) solution is prepared with a total volume of 0.0750 L. The molecular
weight of CoCl2 is 128.9
g
mol
What mass of CoCl2 (in grams) is needed for the solution?
Express the answer using 3 significant figures.
Answers
Answer:
m(CoCl2)=6.516g
Explanation:
c(CoCl2)=0.674M
V(CoCl2)=0.0750L
M(CoCl2)=128.9 g/mol
m(CoCl2)=?
c(CoCl2)×V(CoCl2)=m(CoCl2)/M(CoCl2)
m(CoCl2)= c(CoCl2)×V(CoCl2)×M(CoCl2)
m(CoCl2)= 0.674mol/dm³ × 0.075dm³×128.9g/mol
m(CoCl2)=6.516g
Which of the following is NOT a function of the body system shown above?
Protects internal organs such as the brain and heart.
Transports oxygen and nutrients to the cells.
Produces red blood cells and some white blood cells.
Shape and support of the body.
Answers
Answer:
Transports oxygen and nutrients to the cells.
Will give brainliest but hurry
The condensation point of steam is the same temperature as the ______ of water.
A) freezing point
B) melting point
C) boiling point
Answers
Determine the grams of sodium chloride produced when 10 g of sodium react with 10 grams chlorine gas according to the equation 2Na + Cl2 = 2 NaCl
Answers
Answer:
16 g
Explanation:
Step 1: Write the balanced equation
2 Na + Cl₂ ⇒ 2 NaCl
Step 2: Identify the limiting reactant
The theoretical mass ratio (TMR) of Na to Cl₂ is 46:71 = 0.65:1.
The experimental mass ratio (EMR) of Na to Cl₂ is 10:10 = 1:1.
Since EMR > TMR, Cl₂ is the limiting reactant
Step 3: Calculate the mass of NaCl produced
The theoretical mass ratio of Cl₂ to NaCl is 71:117.
10 g Cl₂ × 117 g NaCl/71 g Cl₂ = 16 g NaCl
what is the pressure in atm of a 5.00 l tank with 5.25 moles of oxygen at 39.3 °c?
Answers
The pressure in the 5.00 L tank with 5.25 moles of oxygen at 39.3 °C is approximately 8.53 atm.
To determine the pressure in atm of a 5.00 L tank with 5.25 moles of oxygen at 39.3 °C, we can use the ideal gas law equation: PV = nRT.
Here, P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant (0.0821 L⋅atm/mol⋅K), and T is the temperature in Kelvin.
Step 1: Convert the temperature from °C to Kelvin by adding 273.15 to 39.3 °C:
T = 39.3 + 273.15 = 312.45 K
Step 2: Plug the values into the ideal gas law equation:
P × 5.00 L = 5.25 moles × 0.0821 L⋅atm/mol⋅K × 312.45 K
Step 3: Solve for P:
P = (5.25 moles × 0.0821 L⋅atm/mol⋅K × 312.45 K) / 5.00 L
P ≈ 8.53 atm
So, the pressure in the 5.00 L tank with 5.25 moles of oxygen at 39.3 °C is approximately 8.53 atm.
To know about pressure refer here:
https://brainly.com/question/14606078
#SPJ11
Describe the relationship between nitrogen, oxygen and air. Be as specific and as
thorough as possible.
Answers
The air in the atmosphere consists of nitrogen, oxygen, which is the life-sustaining substance for animals and humans, carbon dioxide, water vapour and small amounts of other elements (argon, neon, etc.). Higher in the atmosphere air also contains ozone, helium and hydrogen
What is the molarity of a solution composed of 14.0 g NH4Br in 150 mL of solution?a. 0.093 Mb. 0.953 MC. 1.23 Md. 0.009 M
Answers
we are given the mass of NH4Br as 14.g and the volume of the solution as 150mL
we are require to find the molarity of the solution
we first need to fin the mols of NH4Br in 14.g we can do this using the formula
n = m/M
where n is the molsm m is the mass and M is the molar mass of NH4Br
so;
n = 14.0/97.94
= 0.143 mols
now that we have the mols of NH4Br, we can find the molarity by simply using the formula
C = n/V
where
C = Concentration or molarity
n = number of mols
v = volume of the solution in L
therefore;
C = 0.143/ 0.150
= 0.953 M
therefore b is the correct option
Baed on thi information, which type of light i more likely to damage the material?
Answers
Based on the information, UV light is more likely to damage the material.
Which kind of light has the greatest chance of warming quartz?Due to the fact that the infrared light bounces off the quartz, which increases its energy, the quartz may become warm.
The colors of paper and fabric can deteriorate due to ultraviolet light from the sun. In the presence of ultraviolet light waves, the chemicals in colored dyes can degrade. Sunburns may also result from ultraviolet radiation.
Paper and other organic materials will deteriorate, bleach, and deteriorate due to ultraviolet radiation. All of these modifications may reduce readability, affect how well artwork is regarded for its aesthetic qualities, and restrict access to the information it contains.
To know more about UV light visit:
https://brainly.com/question/13358417
#SPJ4
Which would be true about the following reaction? M+N…Y+Z Select one: a. Adding a catalyst would alter the final concentrations of products and reactants at equilibrium. b. Starting at chemical equilibrium, increasing the concentration of M will transiently increase the rate of formation of Y and Z c. Starting at chemical equilibrium decreasing the concentration of M will increase the concentration of Y. and 2. d. Because the reacolnts and products are different molecules, this is not a reversible reaction. e. Starting at chemical equilibrium. increasing the concentration of Y will decrease the concentration of M. and N.
Answers
Starting at chemical equilibrium, increasing the concentration of M will transiently increase the rate of formation of Y and Z.
Which statement is true about the reaction M + N → Y + Z at chemical equilibrium?Option b is the correct answer because it aligns with Le Chatelier's principle, which states that when a system at equilibrium is subjected to a stress, it will shift in a way that partially offsets the effect of the stress.
In this reaction, the increase in the concentration of M will be considered as a stress on the system. According to Le Chatelier's principle, the system will respond by trying to counteract this increase. In this case, the system will shift towards the formation of products Y and Z in order to consume some of the excess M.
However, it's important to note that this increase in the rate of formation of Y and Z will only be transient, meaning it will be temporary. Eventually, the system will reach a new equilibrium with the altered concentrations of reactants and products.
Adding a catalyst would alter the final concentrations of products and reactants at equilibrium.
This statement is incorrect because a catalyst does not alter the final concentrations of products and reactants at equilibrium. A catalyst only speeds up the rate of the reaction but does not affect the position of the equilibrium.
Starting at chemical equilibrium, decreasing the concentration of M will increase the concentration of Y.
This statement is incorrect because according to Le Chatelier's principle, decreasing the concentration of M would cause the system to shift towards the reactants to counteract the decrease. Therefore, it would result in a decrease in the concentration of Y, not an increase.
Because the reactants and products are different molecules, this is not a reversible reaction.
This statement is incorrect because the reversibility of a reaction is not solely determined by whether the reactants and products are different molecules. Reversible reactions can involve different molecules as reactants and products. The reversibility of a reaction is based on its thermodynamics and the ability to proceed in both forward and reverse directions.
Starting at chemical equilibrium, increasing the concentration of Y will decrease the concentration of M and N.
This statement is incorrect because increasing the concentration of Y would not directly affect the concentrations of M and N. The reaction M + N → Y + Z does not involve Y as a reactant, so its concentration would not directly influence the concentrations of M and N.
Learn more about chemical equilibrium
brainly.com/question/4289021
#SPJ11
from the following statements write those application to ionic compound
Answers
Ionic compounds have ionic bonds and are well defined as substances that are able to conduct electricity and exist in a solid state. Thus, options b and d are correct.
What are ionic compounds?Ionic compounds are defined as a substance that shows ionic bondings and is characterized by the presence of the electrostatic force that helds the ions of the compound.
The charged ions carry the electrical charge in the solution. The ionic compounds are generally present as solids that are due to the structure of the crystal lattice that contains an alternative negative and positive charge.
Therefore, options b and d. ionic compounds can conduct electricity is correct.
Learn more about ionic compounds, here:
https://brainly.com/question/9167977
#SPJ1
Your question is incomplete, but most probably your full question was, From the following statements write those applicable to ionic compounds?
a) Usually do not dissolve in water.
b) Conduct electricity in the molten state and aqueous solution.
c) Generally not a conductor of electricity.
d) Exists in the solid state
Two atoms bonded together will remain some distance apart, minimizing the Question 1 options: A) potential energy of the bond. B) bond distance. C) number of valence electrons in the bond. D) partial charge of the bond. Question 2 (5 points) BeH2 has no lone pairs of electrons. What's the structure of this molecule? Question 2 options: A) Tetrahedral B) Bent C) Octahedral D) Linear Question 3 (5 points) In KCl, how are the valence electrons distributed? Question 3 options: A) The electrons are transferred from K to Cl. B) The electrons are unequally shared between K and Cl, forming a polar covalent bond. C) The electrons are shared between many K and Cl ions, creating a "sea of electrons." D) The electrons are equally shared between K and Cl, forming a covalent bond. Question 4 (5 points) Chlorine can bond with fluorine to form ClF. Chlorine can also bond with lithium to form LiCl. Which compound will have a greater partial charge? Question 4 options: A) Both compounds will have the same partial charge. B) ClF C) LiCl D) Neither compound will have partial charge. Question 5 (5 points) Which of the following elements will not form a polar covalent bond with oxygen? Question 5 options: A) Hydrogen B) Oxygen C) Sodium D) Fluorine Which process is used to produce gases from solutions of salts dissolved in water or another liquid? Question 6 options: A) Electrolysis B) Polar covalent bonding C) Ionic bonding D) Metallic bonding Question 7 (5 points) Saved A chemical reaction has the equation AgNO3 (s) + NaCl (s) → AgCl (s) + NaNO3 (s). What type of reaction occurs between AgNO3 and NaCl? Question 7 options: A) Decomposition B) Double displacement C) Single displacement D) Synthesis
Answers
Answer:
1) potential energy of the bond.
2) Linear
3) The electrons are transferred from K to Cl.
4) ClF
5) Oxygen
6) Electrolysis
7) Double displacement
Explanation:
As two atoms approach each other in a bonding situation, the potential energy of the bond is minimized as the internuclear distance of the bonding atoms decreases.
BeH2 has two electron domains and the central beryllium atom is sp2 hybridized. According to valence shell electron pair repulsion theory. A molecule having two regions of electron density will lead to a linear molecule.
KCl is an ionic compound hence there is a transfer of electrons from K(metal) to Cl(nonmetal).
ClF has partial charges because it contains a polar covalent bond. The partial charges arise from the dipole within the molecule. LiF is a pure ionic compound formed by transfer of electrons from Li to F. The species possess full and not partial charges.
When an oxygen atom bonds with another oxygen atom, what has been formed is a homonuclear covalent bond. Since the electro negativity of the both atoms is exactly the same, a pure covalent bond is formed. Recall that polar covalent bonds are formed when there is a significant electro negativity difference between the bonding atoms.
When direct current is passed through certain salt solutions during electrolysis, gases may be evolved and collected at the appropriate electrodes.
A double-replacement reaction is a reaction in which the cations and anions present in two different ionic compounds that are reacting together exchange their positions to form two new compounds on the product side. For instance, look at the reaction shown in question 7 as a typical example of this;
AgNO3 (s) + NaCl (s) → AgCl (s) + NaNO3 (s).
calculate the energies of the states of the hydrogen atom with n=2 and n=3, and calculate the wavelength of the photon emitted by the atom when an electron makes a transition between these two states
Answers
The energies of the states of the hydrogen atom with n=2 and n=3, and the wavelength of the photon emitted by the atom is 656 nm.
The energy of the states of the hydrogen atom is given :
En = - ( 13.6 / n² ) eV
for n= 2 , it is given as :
En = - ( 13.6 / n² ) eV
En = - ( 13.6 / 2² ) eV
for n = 3 , it is given as :
En = - ( 13.6 / 3² ) eV
the electron jump between these two state the energy of photon emitted is :
E = | -3.4 eV - ( - 1.52 eV |
= 1.89 eV
the energy of photon is given as :
E = h c / λ
λ = h c / E
λ = ( 6.626 × 10⁻³⁴ J.s× 3 × 10⁸ m/s ) / 1.89 × 1.6 × 10⁻¹⁹ J
λ = 656 nm
Thus, The energies of the states of the hydrogen atom with n=2 and n=3, and the wavelength of the photon emitted by the atom is 656 nm.
To learn more about wavelength here
https://brainly.com/question/12924624
#SPJ9
A resistance of 60Ω has a current of 0.73A through it when it is connected to the terminals of a battery. The voltage of the battery is ______V. (Just write the number.
Answers
Answer: 43.8 Volts
Explanation:
Ohms law states that current is directly proportional to voltage applied.
\(V=I\times R\)
where V = voltage = ?
I = current = 0.73 A
R = resistance = 60 ohm
Putting in the values we get:
\(V=0.73A\times 60ohm=43.8V\)
Thus the voltage of the battery is 43.8 Volts
HELP!!! WILL MARK BRAINLIEST!!!
Identify on the slide at least 2 reactions create a red or yellow product. (Write the reaction this way: Na2SO4 + AgNO3 using the compound on the left of the chart + the compound on the top of the chart).
Which ion do all of the red and yellow reactions have in common? Drag that ion from the list onto the board.
1. List at least two chemical reactions that resulted in a yellow, orange, or red precipitate.
2. The ion that all of the red and yellow reactions have in common is (drag from the list):
Answers
Answer:
Explanation:Silver nitrate, AgNO3 , will react with sodium sulfate, Na2SO4 , to produce silver sulfate, Ag2SO4 , an ionic compound that is considered insoluble in aqueous solution, and aqueous sodium nitrate.
In a certain organic compound, one of the carbon atoms is bonded to two atoms: a hydrogen atom and a carbon atom. What type of bond exists between the two carbon atoms? (3 points)
Single covalent
Triple covalent
Ion dipole
Ionic
Answers
Answer:
Triple Bond
Explanation:
Carbon has the capability to bond 4 times. If one is going to the hydrogen then the other 3 are going between the carbon elements.
which type of wind is responsible for moving state to state
Answers
.. When water boils, you can see bubbles rising to the surface of
the water. Of what are these bubbles made?
a. air
b. hydrogen and oxygen gas
c. oxygen gas
d. water vapor
e. carbon dioxide gas
Answers
Answer:
Explanation:
It's water vapor. There is enough heat present to get the water to boil but not enough to break it into its chemical components (oxygen and hydrogen), so the answer is D.
What happens if you overheat HNO₃?
Answers
HNO₃ decomposes on heating according to the equation:
4 HNO₃ ---> 2 H₂O + 4 NO₂ + O₂
What is HNO₃?HNO₃ is known as trioxonitrate (v) acid.
It is a volatile acid.
Like other acids, it turns blue litmus solution red and reacts with bases to form salt and water.
Being a volatile acid, when HNO₃ is overheated, it decomposes into several compound.
The equation for the reaction is given below:
4 HNO₃ ---> 2 H₂O + 4 NO₂ + O₂
In conclusion, HNO₃ decomposes on heating.
Learn more about trioxonitrate (v) acid at: https://brainly.com/question/22060503
#SPJ1
a sample of gas at a pressure of 5.1 atm and a temperature of 45 degrees celsius is heated. it’s pressure goes to 7.8 atm what is it’s new temperature in celsius
Answers
Answer:
213.4°C.
Explanation:
Data obtained from the question:
Initial pressure (P1) = 5.1atm
Initial temperature (T1) = 45°C = 45°C + 273 = 318K
Final pressure (P2) = 7.8atm
Final temperature (T2) =..?
The new temperature can be obtained as follow:
P1/T1 = P2 /T2
5.1/318 = 7.8/T2
Cross multiply
5.1 x T2 = 318 x 7. 8
Divide both side by 5.1
T2 = 318 x 7. 8 /5.1
T2 = 486.4K
Finally, we shall convert 486.4K to celsius temperature. This can be done as follow:
T(°C) = T(K) – 273
T(K) = 486.4K
T(°C) = 486.4 – 273
T(°C) = 213.4°C.
Therefore, the new temperature is 213.4°C
a stream consisting of 44.6 mol% benzene and 55.4 % toluene is fed at a constant rate of 100 mol/h to a process unit that produces two product streams, one a vapor and the other a liquid. the vapor flow rate is initially zero and asymptotically approaches half of the molar flow rate of the feed stream. throughout this entire period, no material accumulates in the unit. when the vapor flow rate has become constant, the liquid is analyzed and found to be 28.0 mol% benzene.
Answers
The benzene in the product vapor flow rate is 8.1 mol/h. The vapor flow rate is 50 mol/h.
Given,
Stream consisting of 44.6 mol% benzene and 55.4 % toluene is fed at a constant rate of 100 mol/h.
A process unit produces two product streams, one a vapor and the other a liquid. The vapor flow rate is initially zero and asymptotically approaches half of the molar flow rate of the feed stream.
Throughout this entire period, no material accumulates in the unit.
When the vapor flow rate has become constant, the liquid is analyzed and found to be 28.0 mol% benzene.
The benzene in the product vapor flow rate is 8.1 mol/h.
Now, the benzene in the liquid flow rate can be calculated as follows:
Benzene in feed = 44.6/100 x 100 = 44.6 mol/h
Toluene in feed = 55.4/100 x 100 = 55.4 mol/h
Benzene in the liquid stream = 28/100 x 100 = 28 mol/h
Toluene in the liquid stream = (100-28)/100 x 100 = 72 mol/h
Benzene in the vapor stream = 44.6 – 28 = 16.6 mol/h
Toluene in the vapor stream = (100/2 – 16.6) = 33.4 mol/h
Therefore, the vapor flow rate = 50 mol/h
Hence, the benzene in the product vapor flow rate is 8.1 mol/h (given by (44.6-28) × (50/100)) and the vapor flow rate is 50 mol/h.
To know more about benzene visit:
https://brainly.com/question/14788042
#SPJ11
Why would having bonded pairs help with DNA replication?
Answers
Answer: As DNA replication is semi-conservative, this complementary base pairing allows the two DNA molecules to be identical to each other as they have the same base sequence. The new strands formed are complementary to their template strands but also identical to the other template.
Which are characteristics of all metals?
A
They are malleable, ductile, and conduct electricity.
B
They are malleable, ductile, and form ionic bonds.
C
They are ductile, inert, and conduct electricity.
D
They are noble, ductile, and form ionic bonds.
Answers
Answer:
A. They are malleable, ductile, and conduct electricity.
Explanation:
Answer:
a
Explanation:
Which of the following samples of baking soda wold react the fastest with
vinegar? *
1 point
powder
they all react at the same rate
O small crystal
small cube
Answers
In the titration of a solution of weak monoprotic acid with a 0. 1525 m solution of naoh, the ph half way to the equivalence point was 4. 48. in the titration of a second solution of the same acid, exactly twice as much of a 0. 1525 m solution of naoh was needed to reach the equivalence point. what was the ph half way to the equivalence point in this titration
Answers
The pH half way to the equivalence point in the second titration would be 4.96.
What is titration?Titration is a laboratory technique used to determine the concentration of a sample solution by measuring the volume of a known concentration of a reagent that is added to the sample solution. It is a quantitative analysis method used to determine the amount of a certain substance present in a given solution. It is most commonly used in acid-base titrations, in which the concentration of an acid or base is determined by measuring the volume of a known concentration of a base or acid required to neutralize it.
This is because twice as much of the 0.1525 m NaOH solution was needed to reach the equivalence point, thus the pH would be twice as high as the first titration. This would indicate that the second solution of weak monoprotic acid was more dilute than the first.
To know more about titration click-
https://brainly.com/question/186765
#SPJ4
The area of an object is calculated from experimental data to be 24.6623 cm2. The ± absolute error in the area was determined to be ± 0.6 cm2. The area should be reported, in cm 2 , as A. 25 B. 24.7 C. 24.66 D. 24.6623 E. 24.662
Answers
we should take out from point
Determine the structural diagram and name of the reactants required to make the 3-hydroxy butyl pentanoate. Be sure to name all structures and identify the type of reaction(s). Markovnikov's rule can be ignored if necessary.
Answers
The reactants required to make the 3-hydroxy butyl pentanoate is Butanol (CH3CH2CH2CH2OH) and Pentanoic acid (CH3CH2CH2CH2COOH).
To synthesize 3-hydroxybutyl pentanoate, we need to identify the reactants and the type of reaction involved. Based on the name of the product, we can determine the structural diagram and name of the reactants.
The name "3-hydroxybutyl pentanoate" suggests that we have a pentanoate ester with a hydroxyl group (-OH) attached to the third carbon of a butyl group.
Structural diagram of 3-hydroxybutyl pentanoate:
H
|
CH3-CH2-CH(OH)-CH2-COOCH2CH2CH2CH3
The reactants required for the synthesis of 3-hydroxybutyl pentanoate are:
Butanol (CH3CH2CH2CH2OH) - This provides the butyl group (CH3CH2CH2CH2-) in the final product.
Pentanoic acid (CH3CH2CH2CH2COOH) - This provides the pentanoate (-COOCH2CH2CH2CH3) group in the final product.
Type of reaction:
The reaction involved in synthesizing 3-hydroxybutyl pentanoate is an esterification reaction. It is a condensation reaction between an alcohol (butanol) and a carboxylic acid (pentanoic acid), resulting in the formation of an ester (3-hydroxybutyl pentanoate) and water.
Learn more about esterification reaction visit:
brainly.com/question/31185445
#SPJ11
what is the strongest type of intermolecular forces present between a stearic acid molecule and a water molecule?
Answers
The bond and the force present between molecules is called intermolecular force. A hydrogen bond is present between the stearic acid and a water molecule.
What are hydrogen bonds?Hydrogen bonds are the intermolecular force that forms a dipole-dipole interaction with an electronegative atom in the presence of the lone pair of electrons.
In stearic acid, \(\rm C_{18}H_{36}O_{2}\), hydrogen bonding exists between the oxygen and the hydrogen atom of the molecule.
Therefore, a hydrogen bond is present between stearic acid and the water molecule.
Learn more about intermolecular force here:
https://brainly.com/question/25359736
Does anyone have answers of a worksheet called “ Intro to Graphs” Chemquest 2?
Answers
Answer:
no
Explanation:
Because I have lost and I dont know where is the worksheet