how to find the boiling point of a compound using thermodynamic data enthalpy, s and gibbs free energy
Answers
If the enthalpy of thermodynamic delta H and the entropy of evaporation delta S is known set the Gibbs free energy of the evaporation delta.
G = delta H minus T delta S = 0. increase.
The boiling point temperature is T = delta H/delta S. Trouton's law, which states that the entropy of vaporization for many substances at one atmosphere of pressure is about 21 cal/deg-mole, can be helpful for values of delta S. Not available for tables.
The Gibbs free energy of a system at any point in time is defined as the enthalpy of the system minus the product of the temperature and the entropy of the system. So, to a first approximation, the vaporization enthalpy of a liquid is proportional to the thermodynamic temperature at which the liquid boils.
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Related Questions
A scuba diver uses compressed air to breath under water. He starts with an air volume of 3.20 L at sea level (1 atm) at a temperature of 30°C. What is the volume of air in his tank at a depth of 100 ft (3 atm) and a temperature of 24°C?
Answers
2.56 L is the volume of air in his tank at a depth of 100 ft (3 atm) and a temperature of 24°C.
What is an ideal gas equation?The ideal gas law (PV = nRT) relates the macroscopic properties of ideal gases. An ideal gas is a gas in which the particles (a) do not attract or repel one another and (b) take up no space (have no volume).
Given data:
\(P_1=1 atm\)
\(V_1=3.20 L\)
\(T_1\)=30°C
\(P_2=3 atm\)
\(V_2=?\)
\(T_2=24°C\)
Using the equation:
\(\frac{P_1V_1}{T_1}\) =\(\frac{P_2V_2}{T_2}\)
\(V_2\) =(1 atm x 3.20 L x 24°C) ÷ 30°C
\(V_2\) = 2.56 L
Hence, 2.56 L is the volume of air in his tank at a depth of 100 ft (3 atm) and a temperature of 24°C.
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What is the exact number of protons in the nucleus of the element group VI A and period 3? 32,8,16,34
Answers
The element group VI A, also known as the chalcogen group, consists of the elements oxygen, sulfur, selenium, tellurium, and polonium. These elements are characterized by having six valence electrons, which is why they are placed in group VI A of the periodic table.
The period number refers to the row of elements on the periodic table. Elements in period 3 include sodium, magnesium, aluminum, silicon, phosphorus, sulfur, chlorine, and argon.
It is not possible to determine the number of protons in the nucleus of an element based on its group and period alone. The number of protons in the nucleus of an element is equal to its atomic number, which is a unique property of each element.
Oxygen, which is the first element in group VI A, has an atomic number of 8, which means it has 8 protons in its nucleus. Sulfur, which is the second element in group VI A, has an atomic number of 16, which means it has 16 protons in its nucleus. Selenium, which is the third element in group VI A, has an atomic number of 34, which means it has 34 protons in its nucleus. Tellurium, which is the fourth element in group VI A, has an atomic number of 52, which means it has 52 protons in its nucleus. Polonium, which is the fifth element in group VI A, has an atomic number of 84, which means it has 84 protons in its nucleus.
Elements in period 3 with atomic numbers 11, 12, 13, 14, 15, 16, 17, and 18 are sodium, magnesium, aluminum, silicon, phosphorus, sulfur, chlorine, and argon, respectively. These elements have 11, 12, 13, 14, 15, 16, 17, and 18 protons in their nuclei, respectively.
water is added to a 8.23 g sample of tacl5. the only products are 5.71g of a solid containing only tantalum, chlorine and oxygen and 3.35 g of a gas which is 97.2% chlorine and the remainder is hydrogen. (a) determine the empirical formula of the gas. (b) what fraction of the chlorine of the original compound is in the solid? (c) determine the empirical formula for the solid produced. (d) write a balanced equation for the reaction between tantalum pentachloride and water
Answers
The empirical formula is the simplest formula for a compound which is defined as the ratio of subscripts of smallest possible whole number of the elements present in the formula. It is also known as the simplest formula.
write a balanced equation for the reaction between tantalum pentachloride and water?
Tantalum Pentachloride is used as the chlorinating agent of the organic compound, chemical intermediates, and preparation as tantalum.TaCl5 is used in the preparation of catalyst for the polycyclotrimerizations of alkenediynes, chloro-aryloxide compounds and for the plasma-enhanced atomic layer deposition of tantalum nitride films. This product is involved in the preparation of tantalum(V) oxychloride.Tantalum oxide (Ta2O5) is one of the most important transition metal oxides because of its extraordinary physical and chemical properties, including high dielectric and refractive coefficients and excellent photoelectric performance.To learn more about chlorine refers to:
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A ""Coffee-cup"" calorimeter contains 150 g of water at 24.6 deg. Celsius. A 110 g block of molybdenum metal is heated to 100 deg. Celsius and then placed in the water in the calorimeter. The contents of the calorimeter come to an average temperature of 28.0 deg. Celsius. What is the specific heat capacity of the molybdenum metal if the specific heat capacity of water is assumed to be 4.184 Joules /(Deg. C x gram)
Answers
The specific heat capacity of the molybdenum metal is approximately 0.27 J/(g°C)
Let's calculate the specific heat capacity of the molybdenum metal:
Given:
ΔH = 2100 J (heat released by 150 g of water)
m = 110 g (mass of molybdenum)
ΔT = -72 °C (change in temperature of molybdenum)
To find the specific heat capacity (s) of the molybdenum metal, we can use the equation:
s = ΔH / (m * ΔT)
Substituting the given values:
s = (2100 J) / (110 g * -72 °C)
Calculating the specific heat capacity:
s ≈ 0.27 J/(g°C)
Therefore, the specific heat capacity of the molybdenum metal is approximately 0.27 J/(g°C).
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the indicated gene codes for a protein made up of the amino acid
Answers
Answer:
N/A
Explanation:
Is this a true or false answer or.....?
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.
Formal charge is calculated by assigning each atom _____ the bonding electrons that it shares. Oxidation number is determined by assigning all the shared electrons of a particular bond to the atom with the _____ electronegativity. Multiple choice question. half; higher half; lower all; lower all; higher
Answers
Answer:
A). half, higher
Explanation:
The Formal charge is elaborated as the 'allocated charge to a molecules' atom' on the basis of the assumption that the electrons present in the chemical bond are equally split among the atoms. It is estimated by 'halving the no. of bonding electrons that encircle the atom.
While Oxidation number is characterized as the 'hypothetical charge of an atom that is present within a molecule.' It is also defined as 'the actual number of lost or gained electrons or the rate at which the electrons are gained or lost by an atom to develop a chemical bond along with the other atom.' It is calculated by allocating or sharing the electrons having the higher electronegativity belonging to a specific bond with the other. Thus, option A is the correct answer.
predict whether or not ethanol can form intermolecular interactions in the liquid state? Draw a model in the space below to explain your prediction.
Answers
There is the formation of intermolecular hydrogen bonding in ethanol as shown in the model below.
Intermolecular hydrogen bonding
Intermolecular interactions can arise when ethanol, a common alcohol, is liquid. These interactions result from the ethanol molecule's polarity and hydrogen bonding propensity.
Two carbon atoms, five hydrogen atoms, and one oxygen atom make up the compound ethanol (C2H5OH). Because the oxygen atom is more electronegative than the carbon and hydrogen atoms, they are bound together by a polar covalent bond.
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How many grams are there in 4.30 x 10²⁶ molecules of H₂SO₄?
Answers
Mass of H₂SO₄ : 69,972 g
Further explanationA mole is a number of particles(atoms, molecules, ions) in a substance
This refers to the atomic total of the 12 gr C-12 which is equal to 6.02.10²³, so 1 mole = 6.02.10²³ particles
Can be formulated :
N = n x No
N = number of particles
n = mol
No = 6.02.10²³ = Avogadro's number
moles of H₂SO₄ :
\(\tt mol=\dfrac{N}{No}\\\\mol=\dfrac{4.3\times 10^{26}}{6.02\times 10^{23}}\\\\mol=7.14\times 10^2\)
mass H₂SO₄ (MW=98 g/mol) :
\(\tt mass=mol\times MW\\\\mass=7.14.10^2\times 98\\\\mass=69,972~g\)
3. Why are amino acids important in living organisms?
Answers
Answer:
Explanation:
Their role is to compose proteins. Amino acids have many biologically important functions. They are also energy metabolites,many of them are essential nutrients. Amino acids can function as chemical messengers in communication between cells.
Answer:
well Aside from their role in composing proteins, amino acids have many biologically important functions. They are also energy metabolites, and many of them are essential nutrients. Amino acids can often function as chemical messengers in communication between cells.
Explanation:
this should be the answer
Compare the properties of water at room temperature with water
that has a temperature greater than 100°C.
Answers
Answer: Water won't boil at normal atmospheric pressure until 100 C so it will appear fairly neutral until then. Pure water is completely translucent and colorless. It is also tasteless and odorless. Because completely pure water has no electrolytes, it will be a poor conductor of electricity.
In which group of teh modern periodic table are there very reactive metals and very reactive non metals?
Answers
Metals :-
Group 1A - Alkali metals ( highly reactive metals)
Non-metals :-
Group 17 - Halogens ( highly reactive non-metals )
Complete and balance the following oxidation-reduction reaction in basic solution
Answers
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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Compare a low-dose rate internal radiation treatment to a high dose rate internal treatment. What do you think are the positives and negatives of each?
Answers
During intracavitary radiation, the radioactive source is placed in a body cavity (space) , such as the rectum or uterus.
With interstitial radiation, the implants are placed in or near the tumor, but not in a body cavity. The implant procedure is usually done in a hospital operating room designed to keep the radiation inside the room. You’ll get anesthesia, which may be either general (where drugs are used to put you into a deep sleep so that you don’t feel pain) or local (where part of your body is numbed).
One or more implants is put into the body cavity or tissue with an applicator, usually a metal tube or a plastic tube called a catheter. Imaging tests (an x-ray, ultrasound, MRI, or CT scan) are usually used during the procedure to find the exact place the implant needs to go.
Before being placed, implants are kept in containers that hold the radiation inside so it can’t affect others. The health professionals handling the implants may wear special gear that protects them from exposure once the implants are taken out of the container. High-dose-rate (HDR) brachytherapy allows a person to be treated for several minutes at a time with a powerful radioactive source that’s put in the applicator. The source is removed after 10 to 20 minutes. This may be repeated twice a day over a few days, or once a day over the course of a few weeks. The radioactive material is not left in your body. The applicator might be left in place between treatments, or it might be put in before each treatment.
People getting HDR sometimes stay in the hospital if it involves multiple day treatments and if the applicator is left in place. There may be special precautions to take after the treatment, so be sure to talk to the cancer care team about this. In this approach, the implant gives off lower doses of radiation over a longer period.
Some implants are left in from 1 to a few days and then removed. You’ll probably have to stay in the hospital, sometimes in a special room, during treatment. For larger implants, you might have to stay in bed and lie still to keep it from moving.
Some smaller implants (such as the seeds or pellets) are left in place and never taken out. Over the course of several weeks they stop giving off radiation. The seeds or pellets are about the size of rice grains and rarely cause problems. If your implants are to be left in, you may be able to go home the same day they’re put in. There may be special precautions to take, so be sure to talk to the cancer care team about this.
Type the correct answer in each box.
Which chemical symbols will complete the equation for this single displacement reaction?
2NaBr + Cl2 → 2 __ __ + __ 2
Answers
Answer:
2Naci+Br2
Explanation:
i hope it is help full
Answer:
Na//Cl//Br
Explanation:
A cube of butter weights 0260lb and has a voluse of 1303mI. Express the density in grams per minhider to three significant figures. Part C A gom heys a mass of 600 g. When the gem is placed in a grafuased cylinder containing a o00 Express the density in grams per millititer to three significant figures.
Answers
3 g/mL is the density in grams per millititer to three significant figures.
To express the density of a cube of butter in grams per milliliter, we need to convert the weight from pounds to grams and the volume from cubic inches to milliliters.
1 pound is approximately equal to 453.592 grams, so the weight of the cube of butter in grams would be:
0.260 lb * 453.592 g/lb = 117.81992 g (rounded to three significant figures as 118 g)
1 cubic inch is equal to approximately 16.387 milliliters, so the volume of the cube of butter in milliliters would be:
\(1303 cubic inches * 16.387 mL/in^3 = 21,365.861 mL\) (rounded to three significant figures as 21,400 mL)
Therefore, the density of the cube of butter would be:
Density = Mass / Volume
= 118 g / 21,400 mL
= 0.00551 g/mL (rounded to three significant figures as 0.005 g/mL)
For the gem, we already have the mass as 600 g and the volume as 200 mL.
Therefore, the density of the gem would be:
Density = Mass / Volume
= 600 g / 200 mL
= 3 g/mL (rounded to three significant figures)
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Which is a step of the scientific method in environmental science
Answers
Answer:
Explanation:
1) make an observation that describes a problem,
2) create a hypothesis,
3) test the hypothesis, and
4) draw conclusions and refine the hypothesis.
Look at the activity series and select which two of the following reactions would happen on their own. (Remember, if the lone element is more active than the metal in the compound, the lone element will react and replace the metal in the compound.) Lithium (Li)
Potassium (K)
Calcium (Ca)
Sodium (Na)
Aluminum (Al)
Zinc (Zn)
Iron (Fe)
Tin (Sn)
Lead (Pb)
(Hydrogen) (H)
Copper (Cu)
Silver (Ag)
Gold (Au)
A.
2Li + ZnBr2 ->2LiBr + Zn
B.
Al + 3LiCl ->AlCl3 + 3Li
C.
Sn + ZnSe ->SnSe + Zn
D.
3Ca + Al2O3 ->2Al + 3CaO
Answers
Answer:
2Li + ZnBr2 ->2LiBr + Zn
3Ca + Al2O3 ->2Al + 3CaO
Explanation:
Spontaneous reactions are reactions that can happen on their own. For a spontaneous reaction to occur, a metal that is higher in the activity series must displace a metal that is lower in the activity series from its solution and not vice versa.
If we look at the two reactions selected in the answer, lithium is above zinc in the activity series and calcium is above aluminum in the activity series hence the two reactions occur spontaneously.
PLEASE HELP ME, 20 POINTS
How many atoms are in 25.00 g of Li.
Question 1 options:
2.393 x 1024 atoms of Li
1.333 x 1023 atoms of Li
2.16 x 1026 atoms of Li
2.17 x 1024 atoms of Li
How many grams is 2.393 x 1024 atoms of Cl
Question 2 options:
70.45 g Cl
140.9 g Cl
140.9 mole Cl
70.45 mole Cl
How many atoms are in 25.00 g of B.
Question 3 options:
1.393 x 1024 atoms of B
1.333 x 1023 atoms of B
2.16 x 1026 atoms of B
2.17 x 1024 atoms of B
How many grams is 2.393 x 1024 atoms of O
Question 4 options:
70.45 g O
140.9 g O
63.58 mole O
63.58 g O
Answers
Explanations:
Question 1: Lithium in 20.00+ g is C. or D., but 25.00+ g is D. which means this is the correct option.
I am unsure of Question 2. I don't think it is mole though.
Question 3: Boron in 25.00-30.00 g is B. or D., but 25.00 g would be C.
Question 4: 2.393 x 1024 atoms of Oxygen is 63.58 mole O. I don't know for sure, but I think this is correct.
I am NOT professional. There is a chance I am incorrect. Please reply to me if I've made a mistake.
A catalyst of copper mixed with zinc oxide and alumina is used in industry for this production of methanol. Explain the function of the catalyst.
Answers
Answer:Copper oxide + Hydrogen → Copper + Water
Copper sulfate + Zinc → Zinc sulfate + copper
Aluminium + Copper chloride → Aluminium chloride + copper
Copper + Oxygen → Copper oxide
Explanation:
Chemical reactions involves chemical combination of compounds or elements as reactants to form other compounds or elements.
In this case, various reactants given will react exhibiting different types of chemical reactions to form products.
First reaction
Aluminium + Copper chloride → Aluminium chloride + Copper
This is a single displacement reaction in which aluminium which is a more reactive element than copper displaces copper from its salt.
Second reaction
Copper oxide + Hydrogen → Copper + water
It is another example of a single replacement reaction. Hydrogen displaces less reactive metals from their oxide to form water and the metal.
Third reaction
Copper sulfate + Zinc → Zinc sulfate + copper
It is another single replacement reaction.
Zinc is more reactive than copper and therefore replaces copper from its salt solution.
Fourth reaction
Copper + Oxygen → Copper oxide
It is a synthesis reaction.
A synthesis reaction is a reaction in which elements or small compounds combine to form single compound.
23.033 cm + 34.045 cm + 55.040 mm
Answers
Answer:
62.58200 centimeters
Explanation:
Hope this helps!
Is ice melting a chemical change or a physical change? Explain.
Answers
Ice melts by converting water from a solid to a liquid state. It is a physical transformation since it involves the condition of water changing without any new substances being formed.
A melting ice cube takes on a different shape as it begins to flow. Its makeup doesn't alter, though. A physical change is one like melting. Since no chemical transformation occurs on the ice as it melts, ice melting is not a chemical reaction. The water molecules have not changed; they remain to be water molecules. When ice melts, no new substance is created.So, the melting of ice (to create water) involves a physical transformation. Hence, the freezing of water (to create ice) is a physical transformation.Water undergoes a transition from a solid to a liquid form during ice melting. It is a physical alteration since it affects how water behaves without creating any new substances.
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25. How many ml of a .0023M strontium hydroxide solution are needed to completely react 15.0 mL of 0.012M hydrochloric acid?
Answers
Answer: There are 78.26 mL of a 0.0023M strontium hydroxide solution are needed to completely react 15.0 mL of 0.012M hydrochloric acid.
Explanation:
Given: \(M_{1}\) = 0.0023 M, \(V_{1}\) = ?
\(V_{2}\) = 15.0 mL, \(M_{2}\) = 0.012 M
Formula used to calculate volume of strontium hydroxide solution is as follows.
\(M_{1}V_{1} = M_{2}V_{2}\)
Substitute the values into above formula as follows.
\(M_{1}V_{1} = M_{2}V_{2}\\0.0023 M \times V_{1} = 0.012 M \times 15.0 mL\\V_{1} = 78.26 mL\)
Thus, we can conclude that there are 78.26 mL of a 0.0023M strontium hydroxide solution are needed to completely react 15.0 mL of 0.012M hydrochloric acid.
if i take 2 tables two times per day with 300 tables how many days will my prescription last
Answers
Answer:
150
Explanation:
300 divided by 2
What is the molarity of a solution prepared by dissolving.
Answers
Answer:
The molarity (M) of a solution is the number of moles of solute dissolved in one liter of solution. To calculate the molarity of a solution, you divide the moles of solute by the volume of the solution expressed in liters.
Difine the term compound
Answers
Answer:
Its when like two pure substances are like combined into one.
Explanation:
(FILL IN THE BLANK)
During the electron transport chain, _____ is converted to ____ by adding a phosphate molecule
1) ATP, NADH
2) ATP, ADP
3)ADP, FADH
4)ADP, ATP
Answers
A stone weighs 105 lb in air. When submerged in water, it weighs 67.0 lb. Find the volume and specific gravity of the stone.
Answers
A gas occupies 30. L at 2.0 atm pressure and 27°C. Calculate the volume of the gas if
the pressure remains at 2.0 atm, but the temperature is raised to 54°C.
Answers
Answer:
V2 = 33L
Explanation:
KNOW THAT:
V1 = 30L
P1 = 2.0atm
T1 = 27 + 273.15 = 300.15k (it's help to be in Kelvin)
P2 = 2.0 atm
T2 = 54 = 273.15 = 327.15
V2 = ?
We have an equation: P1V1/T1 = P2V2/T2
Multiply both side for T2 to remove it, divided both side for P2 to remove it. So we can left with V2, and that is what we want to find.
T2P1V1/T1P1 =>> V2= 33L
Example for next four problems:
Compound formula: MgCl₂
Element: Mg
#of Atoms: 1
Element: Cl
# of Atoms: 2
gram formula weight (g): 95.21
Compound Formula: CH₂O
Element: C
#of Atoms:
Element: H
#of Atoms:
Element: O
# of Atoms:
gram formula weight (g):
Answers
The gram formula weight of CH₂O is 30.026 g/mol.
To find the number of atoms, we can count the subscript of the element. Therefore, Mg contains 1 atom and Cl contains 2 atoms.
Compound Formula: CH₂O
Element: C
#of Atoms: 1
Element: H
#of Atoms: 2
Element: O
# of Atoms: 1
gram formula weight (g): Let's calculate it.
First, we need to find the atomic masses of each element.
Gram formula weight (g): To calculate the gram formula weight of a compound, we need to determine the atomic weights of each element and multiply them by the number of atoms present in the compound.
Carbon: 12.01 g/molHydrogen: 1.008 g/molOxygen: 16 g/mol
Therefore, the gram formula weight is:
\($$\mathrm{gfw} = \mathrm{C} \cdot 12.01 + \mathrm{H} \cdot 1.008 + \mathrm{O} \cdot 16$$$$\)
= \(12.01 + 2.016 + 16$$$$\)
= \(30.026\;g/mol$$\)
Therefore, the gram formula weight of CH₂O is 30.026 g/mol.
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