Answer:
24 PSI
Explanation:
The concept Henry's law is used here to determine the pressure at which 1.89 g of chlorine gas is dissolved in the same amount of water. The pressure is 24.0 psi.
What is Henry's law?Henry's law states that at constant temperature the solubility of a gas in a liquid is directly proportional to the pressure of the gas in equilibrium with the solution. The solubility of a gas in a particular solvent is mainly expressed in terms of Henry's law.
The equation of Henry's law is given as:
c = KH . p
Here c is the solubility of the gas, p is the partial pressure and KH is the Henry's constant.
Here only the amount of chlorine gas to dissolve changes. For two different grams of chlorine gas, the equation is:
c ₁ /p ₁ = c ₂ / p ₂
1.23 / 15.6 = 1.89 / P₂
P₂ = 24.0 psi
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What are three forms of the element carbon?
Answer:
There are at least eight forms of carbon: amorphous, graphite, diamond, fullerenes, aggregated diamond nanorods, carbon nanofoam, glassy carbon, and linear acetylenic carbon.
Explanation:
Calculate the heat change in calories for vaporization of 30.0g of water at 100degrees C
Answer:
1.62 × 10⁴ cal
Explanation:
Step 1: Given and required data
Mass of water (m): 30.0 gLatent heat of vaporization of water (ΔH°vap): 540 cal/gStep 2: Calculate the heat change (Q) for vaporization of 30.0g of water at 100 °C
The vaporization is a phase change in which water passes from the liquid state to the gaseous state. We can calculate the heat required using the following expression.
Q = ΔH°vap × m
Q = 540 cal/g × 30.0 g
Q = 1.62 × 10⁴ cal
Based on calculation of Heat change, the heat change involved is 1.62 × 10⁴ cal.
What is the heat of vaporization of a liquid?Heat of vaporization of a liquid is the quantity of Heat required to convert a unit mass of a liquid to vapor at its boiling point.
The heat required is given by the given formula:
Q = ΔH°vap × mwhere:
Q is quantity of Heat involved m is mass of liquidΔH°vap is the heat of vaporization of the liquid How to calculate the heat changeFrom the data provided:
Mass of water (m): 30.0 g
Latent heat of vaporization of water (ΔH°vap): 540 cal/g
Using the formula of Heat change
Q = ΔH°vap × m
Q = 540 cal/g × 30.0 g
Q = 1.62 × 10⁴ cal
Therefore, the heat change involved is 1.62 × 10⁴ cal.
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1. Look at the DNA molecule shown at right. What does it look like?
Answer:
i dont see it but i hope it looks like a dna molecule or something would be wrong
Explanation:
there is no pic
How many moles of H2 would be formed from 2.26 mol of HCI?
Mg + _HCI → _MgCl2 + H2
Answer:
2.6 moles of HCl will produce moles of H2 = [tex]1.3[/tex]
Explanation:
Mass of HCl is 36.458 g/mol
Mass of Hydrogen is 1.00794 g/mol
The balanced equation here is
Mg + 2_HCI → _MgCl2 + H2'
2 moles of HCl produces one mole of H2
One mole of HCl will produce moles of H2 = [tex]\frac{1}{2}[/tex]
2.6 moles of HCl will produce moles of H2 = [tex]\frac{1}{2} * 2.6 = 1.3[/tex]
How many grams will be needed to make a 1.00 Liter solution of 0.500M
sodium chloride?
Mass of NaCl = 29.25 g
Further explanationGiven
A 1.00 Liter solution of 0.500 M Sodium chloride
Required
Mass of NaCl
Solution
Molarity shows the number of moles of solute in every 1 liter of solute or mmol in each ml of solution
[tex]\large{\boxed {\bold {M ~ = ~ \frac {n} {V}}}[/tex]
Input the value :
n = M x V
n = 0.5 x 1
n = 0.5 mol
Mass NaCl :
= mol x MW
= 0.5 x 58.5
= 29.25 g
How many atoms are in 2.5mol of sodium
Answer:
1024 sodium atoms.
How much volume would a sample of galena have it its mass was 300 grams?
Answer:
8272uegdgd9w0wpwlw0w-w[w9w8177w7w7
Express in scientific notation 800678
A spider has several eyes.
What is the main function of these organs?
I’ll give y’all 100 points
Answer:
it is d
Explanation:
Answer: d
Explanation: i think that answer
you have a sample of 23.8 g of C2H6. how many moles of C2H6 are in the sample?
Be sure to show your work and each step is writing out clearly.
Answer:
0.791 moles are present in the sample
Explanation:
To convert mass to moles of a substance you must find the molar mass of the susbtance.
The molar mass of C₂H₆ is:
2C = 12.01g/mol*2 = 24.02g/mol
6H = 1.01g/mol*6 = 6.06g/mol
Molar mass = 24.02g/mol + 6.06g/mol = 30.08g/mol is the molar mass of C₂H₆
And the moles of 23.8g of this substance are:
23.8g * (1mol / 30.08g) =
0.791 moles are present in the samplename two objects which are hard to touch
Answer:
Name of two hard objects is Brick and Wood.
fire and mercury
i think i am not sure
but pls brainlist
is this right someone please help asap photo attached above
Where and how does respiration take place
Answer:
Glucose and oxygen react together in cells to produce carbon dioxide and water and releases energy. The reaction is called aerobic respiration because oxygen from the air is needed for it to work. Energy is released in the reaction. The mitochondria , found in the cell cytoplasm, are where most respiration happens.
The planets in the solar system revolve around the sun because the sun is
Answer:
Newton realized that the reason the planets orbit the Sun is related to why objects fall to Earth when we drop them. The Sun's gravity pulls on the planets, just as Earth's gravity pulls down anything that is not held up by some other force and keeps you and me on the ground.
How many formula units of CaO are in 32.7 g of CaO?
A) 0.58 formula units
B) 1.96 x 1025 formula units
C) 56.08 formula units
D) 3.51 x 1023 formula units
Answer:
D) 3.51x10²³ formula units
Explanation:
To know this, we need to calculate the molecular mass of CaO. To do that, let's use the atomic mass of each element of this compound.
Ca: 40.08 g/mol; O: 16 g/mol
With these given AM, let's calculate the molar mass of CaO:
Mm CaO = 40.08 + 16 = 56.08 g/mol
Now that we have the MM of CaO, it's time to determine the moles of CaO:
moles = mass / MM
moles = 32.7 / 56.08 = 0.5831 moles
Finally to get the formula units, we need to use the Avogadro's number which is 6.02x10²³. According to this number, 1 mole of any substance has this number of atoms, molecules or formula units. So, if we have 0.5831 moles, then the formula units will be:
FU = 0.5831 * 6.02x10²³
FU = 3.51x10²³ formula unitsHope this helps
K2CR2O7 +H2SO4+FeSO4
Answer:
Refer to the attachment
hope it helps
Based upon the percent yield you calculated, what is one source of error, and the resulting of that error in your experiment.
Select the option corresponding to the following choices
a. When decanting, some solid was lost, resulting in less copper recovered and a lower % yield
b. When decanting, some solid was lost, resulting in more copper recovered and a higher % yield
c. When drying over the steam bath, did not let the sample dry completely, resulting in a higher mass of copper recovered, and a higher % yield.
d. When drying over the steam bath, did not let the sample dry completely, resulting in a lower mass of copper recovered, and a lower % yield.
Answer:
The answer is "Choice a".
Explanation:
In the given question, through the basis of their determined percentage yield, a smaller copper increase in value and less copper has been lost during decanting, but now this mistake in your experiment was the cause of confusion, and the wrong choice can be defined as follows:
In point b, it is wrong because A few other solids were not lost during decanting, resulting in a higher recovery of copper as well as a boost in the percentage yieldIn point c, it is wrong because whenever the vapor bath was dried, the specimen did run dry totally, which did result in such a heavier density of copper and a larger percentage of the yield.In point d, it is wrong because whenever the vapor bath was dried, the sample was fully dried, which also resulted in much less adhesive weight and a much less percentage of the yield.What are the characteristics of a gas?
A. no definite shape but a definite volume
B. a definite shape but no definite volume
C. a definite volume and definite shape
D. no definite shape or definite volume
Answer:
D. no definite shape or. definite volume
Explanation:
Gases do not have a definite shape or volume because the molecules in gases are very loosely packed, they have large intermolecular spaces and hence they move around. The particles of solid are closely packed and occupy less space while particles of gases are loosely packed and occupy the complete space available.
The vapor pressure of liquid hexane, C_6 H_14, is 40.0 mm Hg at 271 K. A sample of C_6 H_14 is placed in a closed, evacuated container of constant volume at a temperature of 400 K. It is found that all of the C_6 H_14 is in the vapor phase and that the pressure is 74.0 mm Hg. If the temperature in the container is reduced to 271 K, which of the following statements are correct? Choose all that apply. a) Liquid hexane will be present. b) Some of the vapor initially present will condense. c) Only hexane vapor will be present. d) No condensation will occur. e) The pressure in the container will be 50.1 mm Hg.
Answer:
Only Options (c), (d) and (e) are correct.
Explanation:
Without mincing words let's dive straight into the solution to the question above.
The following parameters from the question are given below which are going to aid in solving this question.
=> The vapor pressure of liquid hexane = 40.0 mmHg, Temperature, T1 = 271K.
=> The temperature, T2 = 400 K, the pressure,P2 = 74.0 mm Hg. The reduced temperature,T3 in the container = 271 K.
What is needed now is to Determine the final temperature, T3 = 271/400 × 74 = 50.01 mmHg.
Therefore, we only have the presence of the vapour of Hexane and there is no condensation. Hence, option c, d and e are the only correct options.
PLEASE HURRY IM TIMED Which of the following are examples of physical changes? (Select all that apply.)
tearing a piece of paper
a nail rusting
crushing a soda can
Answer:
Explanation:
tearing a piece of paper
crushing a soda can
Draw the organic product(s) formed when CH3CH2CH2OH is treated with each reagent. a. H2SO4 e. SOCl2, pyridine i. [1] TsCl, pyridine; [2] NaSH b. NaH f. PBr3 j. POCl3, pyridine c. HCl ZnCl2 g. TsCl, pyridine d. HBr h. [1] NaH; [2] CH3CH2Br
Answer:
See answer below
Explanation:
In this case, we are treating an alcohol with different reagents to give different products. In the picture below you have the draw of each product, and here, the explanation.
a) H₂SO₄: In this case, it will promote an E1 reaction forming an alkene as product.
b) NaH: In this case, it will promote an acid base reaction, and the final product will be an alcoxide.
c) HCl/ZnCl₂: In this case, primary alcohols reacts with this reactive to form an alkyl halide.
d) HBr: Another reaction forming an alkyl halide with bromine in this case.
e) SOCl₂: Similar to c), it will form an alkyl chloride.
f) PBr₃: Similar to d, forming an alkyl bromide.
g) TsCl: Here it will be a sustitution reaction, where tosilate replaces the OH
h) NaH/CH₃CH₂Br: In this case it will form an alcoxide and then, a larger alkyl.
i) TsCl/NaSH: First it will form a tosilate and then, the SH group. A sustitution reaction.
j) POCl₃: A sustitution reaction forming an alkyl chloride.
See picture below for drawings.
Hope this helps
The number of moles in 75.0 liters of F2 at STP
lonic bonds form between oppositely charged
answer:
ionic bonds form between oppositely charged ions
explanation:
an ionic bond is a type of chemical bond formed through an electrostatic attraction between two oppositely charged ions. ionic bonds are formed between a cation, which is usually a metal, and an anion, which is usually a nonmetal. a covalent bond involves a pair of electrons being shared between atoms.what is the formula for the polyatomic ion and name the following compound
Sn(NO2)2
The chemical formula for the polyatomic ion is NO₂⁻ and name of the following compound is tin (II) nitrite.
Chemical formula is a way of representing the number of atoms present in a compound or molecule.It is written with the help of symbols of elements. It also makes use of brackets and subscripts.
Subscripts are used to denote number of atoms of each element and brackets indicate presence of group of atoms. Chemical formula does not contain words. Chemical formula in the simplest form is called empirical formula.
There are four types of chemical formula:
1)empirical formula
2) structural formula
3)condensed formula
4)molecular formula
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Calculate acetic acid needed to make a 35 mM solution in 1 L.
Note: 35 mM = 0.035 M = 0.035 mol/L.
1. Calculate how many moles you need for 1L.
2. Calculate how many grams of acetic acid that is.
3. Use the density of the glacial acetic acid, 1.05 g/mL, to calculate how many mL you
will need to use. Show your instructor or TA this calculation in your notebook to make
sure you have the correct answer before going forward.
Answer:
1. 0.035 mole
2. 2.1 g
3. 2 mL
Explanation:
From the question given above, the following data were obtained:
Molarity of acetic acid = 0.035 mol/L.
1. Determination of the number of mole of acetic acid needed.
Molarity of acetic acid = 0.035 mol/L.
Volume of solution = 1 L
Mole of acetic acid =?
Molarity = mole /Volume
0.035 = mole / 1
Mole of acetic acid = 0.035 mole
2. Determination of the mass of acetic acid, CH₃COOH.
Mole of CH₃COOH = 0.035 mole
Molar mass of CH₃COOH = 12 + (3×1) + 12 + 16 + 16 + 1
= 12 + 3 + 12 + 16 + 16 + 1
= 60 g/mol
Mass of CH₃COOH =?
Mole = mass / Molar mass
0.035 = Mass of CH₃COOH / 60
Cross multiply
Mass of CH₃COOH = 0.035 × 60
Mass of CH₃COOH = 2.1 g
3. Determination of the volume.
Mass = 2.1 g
Density = 1.05 g/mL
Volume =?
Density = mass / volume
1.05 = 2.1 / volume
Cross multiply
1.05 × volume = 2.1
Divide both side by 1.05
Volume = 2.1 / 1.05
Volume = 2 mL
Please HELP!!! Automotive airbags inflate when sodium azide decomposes explosively to its constituent elements. How many grams of sodium azide are required to produce 24.4 L of nitrogen gas at standard temperature and pressure? 2NaN3 --> 2Na + 3N2
47.2 g of sodium azide
106.2 g of sodium azide
1.63 g of sodium azide
0.726 g of sodium azide
Answer: 47.2 g of sodium azide
Explanation:
According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number [tex]6.023\times 10^{23}[/tex] of particles.
To calculate the moles, we use the equation:
[tex]\text{Number of moles of nitrogen}=\frac{\text{Given volume}}{\text {Molar volume}}=\frac{24.4L}{22.4L}=1.09moles[/tex]
The balanced chemical reaction is:
[tex]2NaN_3\rightarrow 2Na+3N_2[/tex]
According to stoichiometry :
3 moles of [tex]N_2[/tex] are produced by = 2 moles of [tex]NaN_3[/tex]
Thus 1.09 moles of [tex]N_2[/tex] are produced by =[tex]\frac{2}{3}\times 1.09=0.73moles[/tex] of [tex]NaN_3[/tex]
Mass of [tex]NaN_3=moles\times {\text {Molar mass}}=0.73moles\times 65g/mol=47.2g[/tex]
Thus 47.2 g of sodium azide are required to produce 24.4 L of nitrogen gas at standard temperature and pressure
Sugar
O2
CO2
H2O
What is the name of this energy pathway?
thnxx for free point? ?????????
how many grams are in 882 ug?
The number of grams in 882 ug is 0.000882 grams.
What is a gram?Gram is a basic measurement value that is used to measure the quantity of a solid object or item. ug is micrograms, it is used to measure the very minute amount of substance.
Measurement units are the units that are used to quantify any object's size, weight, or quantity. Seven fundamental measurement units are utilized in daily life and across the globe.
These units of measurement are the meter, which is used to measure distance, and the second, which is used to measure
Size in meters (m)Kilograms of mass (kg)Volume - Litre (L)Amperes of Electric Current (A)Mole amount of substance (mol)Candela's Luminous Intensity (cd)Temp. in Kelvin (K)Thus, 0.000882 grams is in 882 ug.
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THE PEAK TUTORS
12 Calculate the volume of concentrated sulphuric acid (density 1.84 g/mL), containing 98.0% H2SO4 by mass, that
would contain 40.0g pure H2SO4.
A 32.2mL B 52.2mL C 22.2mL D 42.2mL
Answer:a
Explanation:
ddk
HELPPP!!!!!!!!
On the illustration above , you have a diagram of paper chromatography . The ink spots are represented at the bottom of the paper and the separated dyes are at different distances towards the top of the paper Why do the components of the dyes move to different heights?
Answer:
The components move towards different height because of their density as the water is being absorbed by the paper the water would take the components which has lower density up and would let the lower density component to remain in its place
Hope it helps