The question is complete, the complete question is;
16.1g of bromine are mixed with 8.42g of chlorite to give an actual yield of 21.1g of bromine monochloride.
Answer:
91 %
Explanation:
Br2 + Cl2 ------>2BrCl
Number of moles of Chlorine = 8.42/71 = 0.119 moles
If 1 mole of Cl2 yields 2 moles of BrCl
0.119 moles of Cl2 will yield 0.119 moles * 2/1 = 0.238 moles of BrCl
Number of moles of Br2 reacted = 16.1/160 = 0.1 moles
If 1 mole of Br2 yielded 2 moles of BrCl
0.1 moles of Br2 yields 0.1 * 2/1 = 0.2 moles of BrCl
Bromine is the limiting reactant.
Mass of BrCl produced = 0.2 moles * 115.357 g/mol = 23.07 g
Theoretical yield = 23.07 g
Actual yield = 21.1 g
Percentage yield = Actual yield/Theoretical yield * 100
= 21.1/23.07 * 100 = 91 %
Can someone please check my answer??!!!
Answer:
I think its correct
In an isolated system, mass can neither be
created or destroyed.
ube
FALSE
TRUE
Answer:
True
Explanation:
The law of conservation of mass states that mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations. According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.
Hope it helps
why is it necessary to specify temperature when giving Ka value
Answer:
Because the equilibrium constant is only at constant at temperature. Changing the temperature changes the Ka.
What is the chemical equation of a covalent bond
Answer:
In my knowledge of chemistry, I believe there isn't chemical equation for covalent bond. There is only covalent formula
Explanation:
Gases Test
Chemistry
Answer:
6.64 l is the answer.......
If a cluster of stars is all the same color, what could that mean?
Answer:
Cluster HR Diagrams: Since all the stars in a cluster formed at the same time, they are all the same age. A very young cluster will have a HR diagram with a cluster of T-Tauri stars evolving towards the main sequence. ... Each star is plotted by its color and magnitude on the HR diagram.
Which of the following best defines base isolation?(1 point)
Base isolation is a technique used by engineers to help prevent damage to buildings by volcanoes. The main structure of the building is separate from the base, which allows lava to pass under the building without causing much damage.
Base isolation is a technique used to prevent large-scale damage from volcanoes. New communities being built are set as far back as possible from the base of a volcano.
Base isolation is a technique used to prevent damage to buildings during tsunamis. The main structure of the building is separate from the base, which allows water to pass beneath buildings without causing much damage.
Base isolation is a technique used by engineers to help prevent damage to buildings by earthquakes. The main structure of the building is separate from the base and sits on a bed of springs.
Base isolation is a technique used by engineers to help prevent damage to buildings by earthquakes. The main structure of the building is separate from the base and sits on a bed of springs.
What is base isolation?Base isolation is a technique developed to prevent or minimise damage to buildings during an earthquake.
A base isolation system is a method of seismic protection where the structure (superstructure) is separated from the base (foundation or substructure). By separating the structure from its base the amount of energy that is transferred to the superstructure during an earthquake is reduced significantly.
Hence, option D is correct.
Learn more about base isolation here:
https://brainly.com/question/11337994
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Which does not show earths past environment?
Please hurry I need this :((
If you get a root canal or any other potentially painful procedure done at the dentist's office, he or she will probably inject your gums with a local anesthetic to "numb the pain." Neurons that trigger pain are called nociceptors. They trigger pain in order to alert the body to potentially dangerous stimuli. Most local anesthetics hinder the activity of all local neurons, not just nociceptors, so pain is not the only sensation that goes away temporarily. Because all feeling is gone, you can end up drooling on yourself without knowing it.
Considering this information about local anesthestics, which of the following statements best demonstrates that science is an ongoing process that changes in response to new information and discoveries?
A. There are a variety of local anesthetics being used today, including lidocaine, prilocaine, and mepivacaine.
B. Sir Charles Sherrington, who discovered nociceptors, wrote a book about the nervous system that helped show its role in allowing organisms to adapt to their environments.
C. Unlike a local anesthetic, a general anesthetic causes a person to lose consciousness rather than sensation in one area.
D. Scientists have discovered a way to use a compound found in hot peppers, capsaicin, along with an anesthetic in order to block nociceptors only.
CAn someone help me with this?
Answer:
I think D. sorry if I'm wrong:)
Но Water Lewis steucture
what are asking commet it and I might be able to help
please help me with n5 ty
and don’t waste my time if you don’t know the answer please
Thanks:)
someone help ,, I'll give brainliest lolll .
Answer:
#2
Explanation:
Corrosion is a natural process that converts a refined metal into a more chemically stable form . It is the gradual destruction of materials by chemical
How has the atom changed since Rutherford’s Early Atomic Model?
Answer:
the atom has changed in many ways, we have found sizes, masses, electrons, neutrons, and more.
Explanation:
Matching
Enter the letter of the box whose contents best match the description.
8
8
8
a
b
с
e
f
v a mixture of molecules
atoms of a pure elementa metal
molecules of an element
va solid compound
a mixture of elements
a. box a
b. box e
c. box b
d. box f
e. box d
f. box c
QUESTION 10
Answer:
a mixture of molecules - Box f
atoms of a pure elementa metal - Box D
a solid compound - Box C
a mixture of elements - Box A
Explanation:
Box a has mixture of elements which forms a solid like shape but there are different elements present in the box. The box f has mixture of molecules in which many atoms are combined together. Box c has solid compound with single element.
What is the oxidation state of S in S2032-?
O A. +3
O B. -2
O C. +4
D. +2
Answer: D.) +2
so the oxidation state of sulfur is +2.
Explanation:
Describe the effect of resonance on the amount of rotation that can occur in the main chain of your tripeptide (phenylalanine, alanine, and tyrosine), which affects protein folding.
Answer:
use research.
Explanation:
A solid has a fixed ___________________ and a fixed ____________
Answer:
Shape and volume
hope this helps
have a good day :)
Explanation:
GIVING BRAINLIEST AND THE REST OF MY POINTS!!!!! :D
A scientist made the following table showing the number of eggs laid by two different salmon. Based on this data, which fish has the best chance of their offspring surviving, and what type of adaptation is this?
A) Salmon #1, life cycle adaptation
B) Salmon #1, physical adaptation
C) Salmon #2, life cycle adaptation
D) Salmon #2, behavioral adaptation
Answer:
C
Explanation:I got it correct on a quiz I did that had this question
What is the answer for 250 K = ? °C
Answer:
This is your answer ☺️☺️☺️
Answer:
-23.15
Explanation:
I can't leave till I answer please help!!
Answer:
The answer is 2 all you do is divide the 6.02 and 3.01 and you get 2
what is the name of the part of a cell that allows molecules in in, such as glucose and oxygen?
Answer:
A plasma membrane is permeable to specific molecules that a cell needs. Transport proteins in the cell membrane allow for selective passage of specific molecules from the external environment. Each transport protein is specific to a certian molecule (indicated by matching colors).
3 – Simple Diffusion Across the Cell (Plasma) Membrane: The structure of the lipid bilayer allows small, uncharged substances such as oxygen and carbon dioxide, and hydrophobic molecules such as lipids, to pass through the cell membrane, down their concentration gradient, by simple diffusion.
Or Cell Membrane
Explanation:
Hope This HElp??
Please MArk Me Brainly!!
Why are fossil fuels considered to be a nonrenewable resources? Please help
Answer:
They're considered nonrenewable because they take millions of years to develop. They can't be renewed as fast as we're taking them.
Sea water contains 2% salt (NaCl) by weight. Given that water has a
density of 1g/mL. Determine the concentration of salt in:
(a) mg/L , (b) ppm.
Answer:
a) Concentration of salt in mg/L = 2g/100mL
b) concentration in ppm = 20000 ppm
Explanation:
Percentage composition of salt by weight in water = 2%
Density of water = 1 g/mL
100 mL of water will has a mass of 100 g
Mass of salt in 100 g of water = 2% ×100 g = 2 g
Therefore, 2 g of salt is dissolved in 100 mL of solution
Concentration of salt in 100 mL of solution = 2g/100mL
a) Concentration in mg/L
Mass of salt = 2 g = 2000 mg
Volume of solution = 100 mL = 0.1 L
Concentration in mg/L = 2000 mg/0.1 L
Concentration in mg/L = 20000 mg/L
b) Concentration in ppm
1 ppm = 1mg/L
Therefore, concentration in ppm = 20000 ppm
A student wants to make 50-mL of a 0.6 mg/L solution of acetic acid. She will be making the solution by diluting a stock with a concentration of 2.0 mg/L. Put the steps for her dilution in order. 4. Cap the flask and invert several times to mix. 2. Fill the volumetric flask with deionized water until the meniscus touches the mark. 6. Swirl the flask to mix the contents. 1. Obtain a 50-mL volumetric flask. 3. Use a pipet to add the appropriate volume of stock solution to the flask. 2. Add approximately 10 mL of deionized water to the empty flask.
Answer:
The steps in order are;
1. Obtain a 50-mL volumetric flask
2. Add approximately 10 mL of deionized water to the empty flask
3. Use a pipet to add the appropriate volume of stock solution to the flask
4. Cap the flask and invert several times to mix
5. Fill the volumetric flask with deionized water until the meniscus touches the mark
6. Swirl the flask to mix the contents
The volume of the acetic acid to be added to the solution is 15 mL
Explanation:
The given steps are;
4. Cap the flask and invert several times to mix
5. Fill the volumetric flask with deionized water until the meniscus touches the mark
6. Swirl the flask to mix the contents
1. Obtain a 50-mL volumetric flask
3. Use a pipet to add the appropriate volume of stock solution to the flask
2. Add approximately 10 mL of deionized water to the empty flask
The given parameters are;
The volume of the volumetric flask = 50-mL
The concentration of the final solution of acetic acid = 0.6 mg/L
The concentration of the stock solution = 2.0 mg/L
Let 'x' represent the volume of the stock solution added, we have;
2.0 mg/L·x + (50 - x)×0 = 0.6 mg/L × 50-mL
x = 0.6 mg/L × 50-mL/(2.0 mg/L) = 15 mL
The volume of the stock solution to be added, x = 15 mL
What is the mass of oxygen in 10 grams of water?
Answer:
The answer is 16.00 amu
A tower built of Iron is 500 meter tall. What is the change in height (m) if it is exposed to 25 0 Celsius during summer and at 1.00 Celsius during winter. α iron = 1.2 x 10-5/ Celsius
Answer:
-0.144 m
Explanation:
From the question,
α = Δh/(h₁Δt).................... Equation 1
Where α = coefficient of linear expansivity of iron, Δh = change in height, h₁ = initial height, Δt = change in temperature.
make Δh the subject of the equation
Δh = α(h₁Δt)..................... Equation 2
Given: α = 1.2×10⁻⁵/°C, h₁ = 500 m,
Δt = (t₂-t₁) Where t₂ and t₁ = Final and initial temperature respectively.
Δt = (1-25) = -24 °C
Substitute these values into equation 2
Δh = 1.2×10⁻⁵[500×(-24)]
Δh = 1.2×10⁻⁵(-12000)
Δh = -0.144 m
if a:b =2:3and b:c=6:10,find a:c.
Answer:
4:10
Explanation:
a:b
2:3
6:10
b:c
The common ratio is b
The lcm of 3 and 6 is 6.
Multiply the first ratio by 2 and the second one by 1
a:b:c
4:6:10
hence a:c = 4:10
A 334 mL sample of hydrogen was collected over water at 23C on day when the atmospheric pressure was 756 mm Hg.The vapor pressure of water under these conditions is 17.54 mm Hg. What volume, in liters, will the dry hydrogen ( No water vapor) occupy at STP?
Answer:
0.299 L
Explanation:
We'll begin by calculating the pressure of dry gas. This can be obtained as follow:
Measured pressure = 756 mm Hg
Water vapor pressure = 17.54 mm Hg
Pressure of dry gas =?
Pressure of dry gas = (Measured pressure) – (Water vapor pressure)
Pressure of dry gas = 738.46 mmHg
Finally, we shall determine the volume occupied at STP. This can be obtained as follow:
Initial volume (V₁) = 334 mL = 334 / 1000 = 0.334 L
Initial pressure (P₁) = 738.46 mmHg
Initial temperature (T₁) = 23 °C = 23 °C + 273 = 296 K
Final pressure (P₂) = 760 mmHg
Final temperature (T₂) = 273 K
Final volume (V₂)
P₁V₁/T₁ = P₂V₂/T₂
738.46 × 0.334 / 296 = 760 × V₂/273
Cross multiply
296 × 760 × V₂ = 738.46 × 0.334 × 273
224960 × V₂ = 67334.2597
Divide both side by 224960
V₂ = 67334.2597 / 224960
V₂ = 0.299 L
Thus, the volume of the dry gas st STP is 0.299 L.
Who coined the term "ridgeology"?
Answer:
David R. Ashbaugh
Explanation:
David R. Ashbaugh is a Canadian police officer known for his extensive research on the friction ridge identification, introducing for the first time the use of the term ridgeology in forensic identification and the ACE-V methodology.