Answer:
a. Cl (g) + KBr (aq) = Br (l) + KCl (aq)
b. Al (s) + I (s) = AlI (s)
c. Mg (s) + HCl (aq) = MgCl (aq) + H2 (g)
Explanation:
The reactants are the elements before the equals sign and the products are the ones after the equals sign that are bolded.
Hope this helps :)
PLEASE HELP!!!!!!!!!!!!!!!!!!!!!
Gaseous butane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water . Suppose 23. g of butane is mixed with 29.1 g of oxygen. Calculate the maximum mass of water that could be produced by the chemical reaction. Round your answer to significant digits.
Answer:
12.6 g of H₂O can be produced in the combustion
Explanation:
This excersise involves an easy combustion reaction:
2C₄H₁₀ + 13O₂ → 8CO₂ + 10H₂O
First step: calculate moles of reactants in order to find out the limiting.
23 g . 1mol / 58g = 0.396 moles of butane
29.1 g . 1mol /32g = 0.909 moles of O₂
2 moles of butane react to 13 moles of oxygen
Then, 0.396 moles of butane may react to (0.396 . 13) / 2 = 2.574 moles
Certainly we do not have enough oxygen, so O₂ becomes the limiting reactant
13 moles of O₂ can produce 10 moles of water
Then 0.909 moles may produce (0.909 . 10) /13 = 0.699 moles H₂O
We convert moles to mass → 0.699 mol . 18 g/mol = 12.6 g
Which best explains how insects help flowering plants in reproduction?
Question 9 options:
Insects help keep predators, like birds, away from flowers' seeds
Insects store food in flowers, providing nutrients flowers need to make seeds.
Crawling insects cause pollen to fall on the ground beneath flowering plants.
As they fly, insects spread pollen that sticks to their bodies from the flowers.
Answer:
d is right hope this helps:)
Answer:
The fourth one is correct ( D/ number 4).
PLEASE HELP!! Like Jupiter, Saturns's atmosphere is mostly ______
Answer: Ammonia Ice
Explanation: Like Jupiter, Saturn boasts layers of clouds. The upper layers of clouds are made up of ammonia ice. Traveling toward the core, clouds of water ice form, with bands of ammonium hydrosulfide ice intermixed. The lower layers of Saturn see higher temperatures and pressures.
A boy who weighs 30 kg is skateboarding at a speed of 5 m/s. What is the boys kinetic energy?
750 joules
75 joules
150 joules
375 joules
the answer is 375 joules
What is the buoyant force of a dog that displaces 10 pounds of water?
Answer:
pls answer this link for the answer :D
Explanation:
https://brainly.com/question/22200936
9M 6N 15N What is the net force.
only 20 plant species, such as rice, corn,and barely, make up the main sources of food for the entire human population.
what best describes the reason for maintaining the biodiversity of these plants species?
A.)to prevent famines
B.)to prevent pollution
C.)to preserve the beauty of nature
D.)to enhance the survival
please let ne know.
Answer:
I believe it would be D, to enhance the survival rate.
Explanation:
Answer:
D
Explanation:
to enhance the survival
Photosynthesis reactions in green plants use carbon dioxide and water to produce glucose (C6H12O6) and oxygen. A plant has 88.0 g of carbon dioxide and 64.0 g of water available for photosynthesis
The given question is incomplete. The complete question is:
Photosynthesis reactions in green plants use carbon dioxide and water to produce glucose (C6H12O6) and oxygen. A plant has 88.0 g of carbon dioxide and 64.0 g of water available for photosynthesis. Determine the mass of glucose (C6H1206) produced
Answer: 60.0 g of glucose
Explanation:
To calculate the moles, we use the equation:
[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}[/tex]
a) moles of [tex]CO_2[/tex]
[tex]\text{Number of moles}=\frac{88.0g}{44g/mol}=2.0moles[/tex]
b) moles of [tex]H_2O[/tex]
[tex]\text{Number of moles}=\frac{64.0g}{18g/mol}=3.5moles[/tex]
[tex]6CO_2+6H_2O\rightarrow C_{6}H_{12}O_6+6O_2[/tex]
According to stoichiometry :
6 moles of [tex]CO_2[/tex] require = 6 moles of [tex]H_2O[/tex]
Thus 2.0 moles of [tex]CO_2[/tex] require=[tex]\frac{6}{6}\times 2.0=2.0moles[/tex] of [tex]H_2O[/tex]
Thus [tex]CO_2[/tex] is the limiting reagent as it limits the formation of product.
As 6 moles of [tex]CO_2[/tex] give = 1 moles of glucose
Thus 2.0 moles of [tex]CO_2[/tex] give =[tex]\frac{1}{6}\times 2.0=0.33moles[/tex] of glucose
Mass of glucose = [tex]moles\times {\text {Molar mass}}=0.33moles\times 180g/mol=60g[/tex]
Thus 60.0 g of glucose will be produced from 88.0 g of carbon dioxide and 64.0 g of water
In green plants use carbon dioxide and water to produce glucose (C6H12O6) and oxygen. A plant has 88.0 g of carbon dioxide and 64.0 g of water available for photosynthesis produces 60.0 g of glucose.
To calculate the moles, we use the equation:
Number of moles Given mass Molar mass a) moles ofNumber of moles = (88.0g)/(44g / mol) = 2.0mol*epsilonb) moles of H2ONumber of les = (64.0g)/(18g / mol) = 3.5molesAccording to stoichiometry6 moles of re = 6mol of H2OWhat is mole fraction ?Mole fraction is a unit of concentration, described to be same to the range of moles of a element divided via way of means of the entire range of moles of a solution.
Thus it is well explained.
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If you have 5 mol H2 and 2 mol N2, what is the limiting reagent in the reaction
below?
3 H2(g) + N2 (g) → 2 NH3 (g)
Answer:
Hydrogen is the limiting reactant.
Explanation:
Hello!
In this case, for the identification of the limiting reactant, it is necessary to compute the yielded moles of ammonia via both hydrogen and nitrogen in agreement to the 3:2 and 1:2 mole ratios respectively:
[tex]n_{NH_3}^{by\ H_2}=5molH_2*\frac{2molNH_3}{3molH_2}=3.33molNH_3\\\\n_{NH_3}^{by\ N_2}=2molN_2*\frac{2molNH_3}{1molN_2}=4molNH_3[/tex]
Thus, since hydrogen yields the fewest moles of ammonia we infer it is the limiting reactant.
Best regards!
help
so I put this as a chemistry question but I don't think it is but you y'all could still help me that would be very appreciated
Find the mass of a 88.8 mL quantity of honey if the density of honey is 1.36 g/mL.
Identify the fact that is FALSE about the law of conservation of energy?
Answer:
What are the options?
Explanation:
......
The light and dark circles in the picture represent different types of atoms. Which picture best represents a pure compound?
The third picture has only one type of combination of atoms so it represents a pure compound. Therefore, option (c) is correct.
What is a pure compound?A pure compound is a compound that contains two or more elements combined chemically in a fixed ratio. These compounds can be broken down into separate or simple elements by chemical methods.
A pure compound is formed when elements are joined together by chemical bonds. Compounds such as water, crystals, and baking soda as pure.
Water is a compound formed by the combination of oxygen and hydrogen in a fixed ratio. A pure substance is a substance that has only one kind of atom or molecule having a constant composition.
The first picture represents pure substance and the 2nd and 4th pictures represent mixed compounds. Therefore, the third picture represents a pure compound.
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How many grams are in 8.3 moles of CaCl2?
Answer:
(8.3×40)+(8.3×71)
921.3grames
Answer:
[tex]\Large \boxed{\sf 921.3 \ g}[/tex]
Explanation:
Use formula
[tex]\displaystyle moles=\frac{mass}{M_r}[/tex]
[tex]M_r=40+35.5 \times 2 = 111[/tex]
Solve for mass
[tex]mass=8.3 \times 111=921.3[/tex]
Which contributes to the polarity of a water molecule?
Oa linear shape along with strong covalent bonds
O deflection of hydrogen atoms by lone pairs of electrons
O no difference in the electronegativity of oxygen and hydrogen
Ohydrogen bond formation between water molecules
Answer:
B
Explanation:
Answer:
B
Explanation:
Edge 2022
The purification of hydrogen gas by diffusion through a palladium sheet was discussed in Section 5.3. Compute the number of kilograms of hydrogen that pass per hour through a 5-mm-thick sheet of palladium having an area of 0.20 m2 at 500C. Assume a diffusion coefficient of 1.0 108 m2 /s, that the concentrations at the high- and low-pressure sides of the plate are 2.4 and 0.6 kg of hydrogen per cubic meter of palladium, and that steady-state conditions have been attained
This question is incomplete, the complete question is;
The purification of hydrogen gas by diffusion through a palladium sheet was discussed in Section 5.3. Compute the number of kilograms of hydrogen that pass per hour through a 5-mm-thick sheet of palladium having an area of 0.20 m² at 500C.
Assume a diffusion coefficient of 1.0 × 10⁻⁸ m²/s, that the concentrations at the high- and low-pressure sides of the plate are 2.4 and 0.6 kg of hydrogen per cubic meter of palladium, and that steady-state conditions have been attained
Answer:
the number of kilograms of hydrogen that pass per hour through is 2.592 × 10⁻³ kg
Explanation:
Given the data in the question;
thickness of sheet t = 5 mm
Area A = 0.20 m²
Temperature T = 500°C
diffusion coefficient ∝ = 1.0 × 10⁻⁸ m²/s
concentration high pressure side C[tex]_A[/tex] = 2.4
concentration low pressure side C[tex]_B[/tex] = 0.6 kg
from the question, we calculate the concentration gradient
dc/dx = (C[tex]_A[/tex] - C[tex]_B[/tex])/dt
so we substitute
dc/dx = (2.4 - 0.6) / ( - 5 × 10⁻³ )
dc/dx = -360
now, mass of hydrogen per hour that diffuse through a pd sheet
M = -∝AT(dc/dx)
where time t is 1 hour ( 3600 sec )
we substitute
M = -(1.0 × 10⁻⁸) × 0.20 × 3600 (-360)
M = 0.002592
M = 2.592 × 10⁻³ kg per one hour
Therefore, the number of kilograms of hydrogen that pass per hour through is 2.592 × 10⁻³ kg
The number of kilograms of hydrogen that pass per hour through a 5-mm-thick sheet of palladium having an area of 0.20 m² at 500°C is 2.592 × 10⁻³ kg.
Purification: It refers to the process of removing impurities or contaminants from a substance in order to make it cleaner, purer, or more refined. It also involves the elimination or reduction of unwanted substances or components that may be present in the original material.
According to the question, given data is:
Thickness of sheet t = 5 mm
Area A = 0.20 m²
Temperature T = 500°C
Diffusion coefficient ∝ = 1.0 × 10⁻⁸ m²/s
Concentration high pressure side [tex]C_A[/tex] = 2.4
Concentration low pressure side[tex]C_B[/tex]= 0.6 kg
from the question, we calculate the concentration gradient,
[tex]dc/dx = (C _A- C_B)/dt[/tex]
so, we substitute the values,
[tex]dc/dx[/tex] = (2.4 - 0.6)/ ( - 5 × 10⁻³)
[tex]dc/dx = -360[/tex]
Now, mass of hydrogen per hour that diffuse through a Palladium sheet,
M = -∝[tex]AT(dc/dx)[/tex]
where time t is 1 hour (3600 sec)
We substitute,
M = -(1.0 × 10⁻⁸) × 0.20 × 3600 (-360)
M = 0.002592
M = 2.592 × 10⁻³ kg per hour.
Therefore, the number of kilograms of hydrogen that pass per hour through a palladium sheet is approximately 2.592 × 10⁻³ kg.
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This question is incomplete, the complete question is;
The purification of hydrogen gas by diffusion through a palladium sheet was discussed in Section 5.3. Compute the number of kilograms of hydrogen that pass per hour through a 5-mm-thick sheet of palladium having an area of 0.20 m² at 500C.
Assume a diffusion coefficient of 1.0 × 10⁻⁸ m²/s, that the concentrations at the high- and low-pressure sides of the plate are 2.4 and 0.6 kg of hydrogen per cubic meter of palladium, and that steady-state conditions have been attained.
What is the correct name for Na2O?
Answer:
Sodium oxide
Explanation:
Answer: Sodium oxide
which of the following metal react slowly
Answer:
huh
Explanation:
I like ribs too eat lamfoaoa
what is the first thing you should do if there is an accident during a lab activity
A. read the directions
B. put on your safety equipment
C. clean up the mess
D. notify the instructor
Answer: D, notify instructor .
Explanation: common sense love
QUESTION 2: The molar mass for this compound is 1.11g / m * o * l
The molecular formula for this compound is
Some organisms reproduce asexually and have only one parent. Others reproduce sexually and have two parents. How does the genetic information of a new organism produced through sexual reproduction compare to the genetic information of its parents?
A.It is an exact copy.
B.It is completely different.
C.It is opposite from its parents.
D.It is a blend of the genetic information of its parents.
Answer:
D.
the father parent shares his genetic information with the mother during sexual intercourse( the sperm and egg)
If the empirical formula of a compound is CH2, which of the following could be a possible molecular formula for this
compound?
C2H2
CH
CH4
C2H4
Answer:
C2H2
Explanation:
In what part of the atom do alpha or beta particles originate?
Answer:
Nucleus
Explanation:
they originate in the nucleus
Convert 25.6 L of a gas at STP to molecules
Help I’m timed!
What do planets mercury and Venus have in common. Gas surface composition with no rings or Moon’s gas service composition with rings and moon rocks surface composition with no rings or moon rock surface composition with rings and moons?
Answer: i could be incorrect but im pretty sure the answer is, Gas surface with no rings.
Explanation:
s-s-s-science!
Answer:
Gas surface with no rings.
Explanation:
The scientists involved in this research are specialists in
Answer:
Sep 23, 2019 — It's in everyone's benefit if physicians participate in research. By Mukesh K. Jain, Tadataka Yamada and Robert Lefkowitz. Drs. Jain, Yamada ...
Explanation:
A man has a kinetic energy of 125J when he runs at 30m/s. What is the mass of the man?
Answer:
[tex]\boxed{\bold { \Large { \boxed {0.28 \ kg}}}}[/tex]
Explanation:
Use kinetic energy formula
[tex]\sf \displaystyle K.E=\frac{1}{2} mv^2[/tex]
Solve for m
[tex]\displaystyle 125=\frac{1}{2} m \times 30^2[/tex]
[tex]m=0.2777..[/tex]
A man has a kinetic energy of 125J when he runs at 30m/s. 0.2777 is the mass of the man.
What is kinetic energy?Kinetic energy is the energy of motion, observable as the movement of an object, particle, or set of particles.
Use kinetic energy formula:
Given data:
K.E = 125J
V = 30m/s
K.E = [tex]\frac{1}{2} mv^2[/tex]
Solve for m
125J = [tex]\frac{1}{2} \;m \;{30m/s}^2[/tex]
m = 0.2777
Hence, 0.2777 is the mass of the man.
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How many moles are in 32 grams of Oxygen (O)? *
Answer: The correct answer is 2 moles.
Explanation:
someone help i will give branliest:)
Answer:
i think answer is B negative effects and benefits