Answer:
soorry i cant help you wish the best bud
Explanation:
i dont really know i am really sorry
Scientists are very curious about the world around them. What are some
aspects of the world around you that you find interesting? How might you
study some of these aspects?
Ozone, O3, is produced in automobile exhaust by the reaction represented by the equation:
NO2 (g) + O2 (g) → NO (g) + O3 (g)
What mass of ozone is predicted to form from the reaction of 5.0 g NO2 in a car’s exhaust and excess oxygen?
Answer: 5.28 g of [tex]O_3[/tex] is produced.
Explanation:
To calculate the moles :
[tex]\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}[/tex]
[tex]\text{Moles of} NO_2=\frac{5.0g}{46g/mol}=0.11moles[/tex]
The balanced chemical reaction is:
[tex]NO_2(g)+O_2(g)\rightarrow NO(g)+O_3(g)[/tex]
[tex]NO_2[/tex] is the limiting reagent as it limits the formation of product and [tex]O_2[/tex] is the excess reagent.
According to stoichiometry :
1 mole of [tex]NO_2[/tex] produces = 1 mole of [tex]O_3[/tex]
Thus 0.11 moles of [tex]NO_2[/tex] will produce=[tex]\frac{1}{1}\times 0.11=0.11moles[/tex] of [tex]O_3[/tex]
Mass of [tex]O_3=moles\times {\text {Molar mass}}=0.11moles\times 48g/mol=5.28g[/tex]
Thus 5.28 g of [tex]O_3[/tex] is produced.
WILL GIVE BRAINLESS IF ALL ANSWER ARE CORRECT
Which of these is not a limiting factor for a population of squirrels?
a
Available space to build nests
b
Available water sources
c
Available friends to play
d
Available food to eat
Question 2 (4 points)
A decrease in limiting factors leads to an increase of biodiversity.
True
False
Question 3 (4 points)
If a disease destroying soybean plants in a field completely sweeps through an ecosystem, what would happen to the population of
songbirds that rely on the soybeans for food?
a
The songbird population would decrease
b
The songbird population will remain constant
c
The songbird population will increase rapidly
d
The songbirds will all crumple to the ground instantaneously
Question 4 (4 points)
Which of these limiting factors from the lesson is abiotic?
a
Predators
b
Food
c
Weather
d
Diseases
Question 5 (4 points)
Which of the following was given in the lesson as a limiting factor for organisms in the Caribbean Sea?
a
Amount of rainfall
b
Nesting locations
c
Water Temperatures
d
A lack of space within the mangrove swamps
Question 6 (5 points)
Are limiting factors positive, negative, or both for an ecosystem? Explain your reasoning
Question 7 (4 points)
When a population grows past the ecosystem's carrying capacity, what happens to the population?
a)It continues to grow
b)the population starts to die off to return to carrying capacity
c)The population will go extinct due to lack of resources
d)The population grows, then finds a new carrying capacity
Question 9 (4 points)
Will competition increase or decrease the carrying capacity of an ecosystem for the animals in competition?
increase
Decrease
Question 10 (4 points)
The largest number of individuals in a species that an environment can support long term...
a)Immigration
b)population Density
c)Emigration
d)Carrying Capacity
Answer:
See explanation
Explanation:
1) C
2) True
3) A
4) C
5) A
6) Both. Some species that rely on the limiting factors will be harmed and other species that are prey to those species relying on limiting factors will be benefited.
7) B
9) Decrease
10) D
A student runs 100 meters in 16 seconds. What is the speed of the student?
Answer:
6.25m/s
Explanation:
speed = distance/time
speed = 100/16 = 6.25m/s
Please help
Why it it not recommended to spill water over a fire that has erupted due to a short circuit?
Answer:
Dear frnd, water is a conductor of electricity and short circuit means a damage in electrical component in a device. Thus,water will spread the fire.
Explanation:
Pls mark as brainliest.Rocket Out
WILD GUESS
OUT OF BAKUGOU SHOTO AND DEKU
GUESS WITCH ONE I SIMP FOR
Answer: all of them?
Explanation:
Answer:
Deku.
Explanation:
A student investigates a pure metal, X . The student takes a 100.0 g piece of metal X , heats it to 500.0°C , then places it on a 1000.0 g block of ice at 0.0°C . The ice partially melts, and the final temperature of the metal, ice, and melted water is 0.0°C . The student calculates the experimental value of the specific heat capacity of metal X and records it as 0.24 J/(g⋅°C) . Calculate the magnitude of the energy change (qmetal) of metal X during the experiment.
Answer:
q_metal = -12000 J = -12 KJ
Here, the negative sign indicates that the energy is lost by the metal piece.
Explanation:
The magnitude of energy change of the metal X can be given by the following formula:
[tex]q_{metal} = mC\Delta T[/tex]
where,
m = mass of metal = 100 g
C = Specific Heat Capacity of metal X = 0.24 J/g.°C
ΔT = Change in Temperature of Metal Piece = 0° C - 500°C = -500°C
Therefore, using these values in the equation, we get:
[tex]q_{metal} = (100\ g)(0.24\ J/g^oC)(-500^oC)\\[/tex]
q_metal = -12000 J = -12 KJ
Here, the negative sign indicates that the energy is lost by the metal piece.
what reaction is 3Pb + 2H₃PO₄ ----> 3H₂ + 1Pb₃(PO₄)₂ *
Answer: double replacement
Explanation:
Answer:
Single Replacement
Explanation:
A + BC --> AC + B
A=Pb
B=H
C=PO4
hii if you answer this i’ll give you brainlist
Answer: 24.0g of NaCl.
The number seems the highest, but I am not in Honors Chem (I am taking honors biology), so I do not know.
An 8.5 g. Of ethanol (C2H5OH) placed in a constant volume calorimeter and the temperature rose to 3.2°C. Find the heat of reaction of the ethanol (MM =46.1 g/mol) in kJ/mol. The heat capacity of the calorimeter plus water is read as 6.38 J/°C
Answer:
[tex]\Delta H_{rxn}=-0.111 \frac{kJ}{mol}[/tex]
Explanation:
Hello!
In this case, since the total heat flow due to the reaction equals the negative of the calorimeter's heat, we can first compute the former as shown below:
[tex]Q_{rxn}=-C\Delta T\\\\Q_{rxn}=6.38\frac{J}{\°C}*3.2\°C=-20.416J[/tex]
Now, since this total heat flow due to the reaction is defined in terms of the heat of reaction and the total reacted moles:
[tex]Q_{rxn}=n*\Delta H_{rxn}[/tex]
Thus, we compute the moles in 8.5 g of ethanol:
[tex]n=8.5g*\frac{1mol}{46.08g}=0.185mol[/tex]
Therefore, the heat of reaction results:
[tex]\Delta H_{rxn}=\frac{Q_{rxn}}{n} =\frac{-20.416J}{0.185mol} =-110.7J/mol\\\\\Delta H_{rxn}=-0.111 \frac{kJ}{mol}[/tex]
Best regards!
Cuáles son el pHy PoH de una solución cuya concentración de iones hidronio [H+]es de 0.000475 M de acido sulfurico?
‼️‼️20 pt ‼️‼️HELP ‼️‼️
What is the effect on the graph of f(x) = x^2 when it is transformed to
h(x) = 1/6x^2 – 9?
A. The graph of f(x) is horizontally stretched by a factor of 6 and
shifted 9 units to the right.
B. The graph of f(x) is vertically compressed by a factor of 6 and
shifted 9 units down.
C. The graph of f(x) is vertically compressed by a factor of 6 and
shifted 9 units to the right.
D. The graph of f(x) is horizontally compressed by a factor of 6 and
shifted 9 units down.
Answer:
D.
Explanation:
The graph of f(x) is vertically compressed by a factor of 6 and shifted 9 units down
Please Help. Thank You!
Please help me guys.
Daniel is conducting an experiment on magnetic objects. He completes more than one trial. Why is it important for Daniel to do this?
The conclusion is less accurate.
The conclusion is more accurate.
There is a greater chance of error.
The results will be inaccurate.
Answer:The conclusion is less accurate.
Explanation:
Feb 17, 2021 — He completes more than one trial. Why is it important for Daniel to do this?
can someone explain how to do this, I don't understand?
Answer:
a) 2
b) 3
c) 5
d) 6
Explanation:
(GIVING BRAINLIEST)
The table below shows the characteristics of three components of the solar system labeled A, B, and C. Which choice identifies the components in the correct order?
1 Comet, asteroid, sun
2 Moon, planet, sun
3 Moon, sun, planet
4 Sun, planet, moon
Answer:
4 sun , planet, moon are the components in the correct order
Who is wise president of india?
________________________
A 216-L cylinder holds propane gas at 184.8 kPa of pressure and 127°C. How many moles of propane are in the cylinder?
Answer:
12 moles of propane.
Explanation:
From the question given above, the following data were obtained:
Volume (V) = 216 L
Pressure (P) = 184.8 KPa
Temperature (T) = 127 °C
Number of mole (n) =?
Next, we shall convert 127 °C to Kelvin temperature. This can be obtained as follow:
T(K) = T(°C) + 273
T(°C) = 127 °C
T(K) = 127 + 273
T(K) = 400 K
Finally, we shall determine the number of mole of propane gas in the container. This can be obtained as follow:
Volume (V) = 216 L
Pressure (P) = 184.8 KPa
Temperature (T) = 400 K
Gas constant (R) = 8.314 L.KPa/Kmol
Number of mole (n) =?
PV = nRT
184.8 × 216 = n × 8.314 × 400
39916.8 = n × 3325.6
Divide both side by 3325.6
n = 39916.8 / 3325.6
n = 12 moles
Thus, 12 moles of propane is present in the cylinder
(GIVING BRAINLIEST)
....
Answer:
C
Explanation:
Because a planet is a celestial body distinguished from the fixed stars by having an apparent motion of its own (including the moon and sun), especially with reference to its supposed influence on people and events.
Answer:
it is the second one ;)
Explanation:
what other adaptations should zebras have?
Give me ideas please
How does a hydroelectric power plant convert energy?
A. As water flows through the channels toward the turbines, it has kinetic energy. This is changed to mechanical energy as the water turns the turbines. Then the mechanical energy of the turbines is changed to electrical energy by the generator.
B. As water flows through the channels toward the transformer, it has potential energy. This is converted to electrical energy by the transformer, and then the energy is magnified by the generator.
C. As water flows through the channels toward the generator, it has potential energy. This is changed to electric energy as the generator rotates. Some of the electric energy is used to change water's energy into kinetic energy.
D. As water flows through the channels toward the turbine, it has kinetic energy. This is changed to potential energy within the turbine. This potential energy is converted to electrical energy by the transformer.
PLS HELP I WILL GIVE BRAINLYIST!!!
What type of galaxy is pictured?
A.) elliptical
B.) irregular
C.) lens
D.) spiral
According to the reaction below, how many grams of KCl (potassium chloride) can be formed from 70.90 g of chlorine with excess potassium?
2K + Cl2 ---> 2 KCl
Answer:
149.1 g KCl
Explanation:
2 K + Cl₂ ⇒ 2 KCl
This is your chemical equation. Use this equation to figure out the stoichiometry between Cl₂ and KCl. According to the equation, for every 2 moles of KCl, you need 1 mole of Cl₂, making the ratio between KCl and Cl₂ 2/1.
First, convert grams of Cl₂ to moles of Cl₂. The molar mass is 70.906 g/mol.
(70.90 g Cl₂)/(70.906 g/mol) = 0.9999 mol Cl₂
Convert moles of Cl₂ to moles of KCl using the stoichiometric relationship.
(0.9999 mol Cl₂) × (2 mol KCl/1 mol Cl₂) = 1.9998 mol KCl
Convert moles of KCl to grams of KCl. The molar mass is 74.55 g/mol.
(1.998 mol KCl) × (74.55 g/mol KCl) = 149.1 g KCl
You will produce 149.1 g KCl.
When a precipitation reaction occurs the resulting mixture of liquid solution and solid precipitate would be considered a___________ Mixture.
When a precipitation reaction occurs the resulting mixture of liquid solution and solid precipitate would be considered a heterogeneous Mixture.
What is precipitation reaction?Chemical reactions known as precipitation reactions take place in aqueous solutions to produce precipitates. Moreover, chemical changes that occur inside the substances are a part of chemical processes.
Moreover, chemical reactions take place between two or even more chemical substances, known as reactants. As a result, the reactants might be solid, gaseous, or liquid in nature. When a precipitation reaction occurs the resulting mixture of liquid solution and solid precipitate would be considered a heterogeneous Mixture.
Therefore, when a precipitation reaction occurs the resulting mixture of liquid solution and solid precipitate would be considered a heterogeneous Mixture.
To know more about precipitation reaction, here:
https://brainly.com/question/29762381
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What is the molar mass of H2CO3?
(atomic mass: C = 12.01, H = 1.01, O = 15.99)
Answer:62.00 g/mol you just need to look up every element atomic mass, and then multiply it by the number of atoms and then add it
The molar mass is equal to the sum of atomic mass of an atom.The molar mass of H₂CO₃ is 60.99.
What do you mean by molar mass ?Molecular weight M is a chemical compound's mass divided by its amount of substance measured in moles. MB = m/nB, where m is the total mass of a pure substance sample and nB is the amount of substance B given in moles.
The weight of one mole of a sample is defined as its molar mass. To calculate a molecule's molecular mass, multiply the subscript (number of atoms) by the atomic mass of each element in the molecule, then add the masses of all the elements in the molecule.
Finding the molar mass of a single element is a piece of cake. All you have to do is look up the element's atomic mass on the periodic table.
Given:
atomic mass: C = 12.01, H = 1.01, O = 15.99
The molar mass of H₂CO₃ = 1 × 1.01 + 12.01 + 3 × 15.99
= 1.01 + 12.01 + 47.97
= 60.99
Thus, The molar mass of H₂CO₃ is 60.99.
To learn more about the molar mass, follow the link;
https://brainly.com/question/22997914
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Ammonium perchlorate NH4ClO4 is the solid rocket fuel used by the U.S. Space Shuttle. It reacts with itself to produce nitrogen gas N2, chlorine gas Cl2, oxygen gas O2, water H2O, and a great deal of energy. What mass of chlorine gas is produced by the reaction of 3.3g of ammonium perchlorate? Be sure your answer has the correct number of significant digits.
Answer: 0.99 grams of chlorine gas is produced by the reaction of 3.3g of ammonium perchlorate
Explanation:
To calculate the moles, we use the equation:
[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}[/tex]
[tex]\text{Number of moles of } NH_4ClO_4=\frac{3.3g}{117.5g/mol}=0.028moles[/tex]
The decomposition of ammonium perchlorate is :
[tex]2NH_4ClO_4\rightarrow Cl_2+N_2+2O_2+4H_2O[/tex]
According to stoichiometry :
2 moles of [tex]NH_4ClO_4[/tex] produce = 1 mole of [tex]Cl_2[/tex]
Thus 0.028 moles of [tex]NH_4ClO_4[/tex] produce=[tex]\frac{1}{2}\times 0.028=0.014moles[/tex] of [tex]Cl_2[/tex]
Mass of [tex]Cl_2=moles\times {\text {Molar mass}}=0.014moles\times 71g/mol=0.99g[/tex]
Thus 0.99 grams of chlorine gas is produced by the reaction of 3.3g of ammonium perchlorate
_Na2B407 + _H2SO4(aq) +
H2SO4(aq) + -_H200 → __H3BO3(s) + __Na2SO4(aq)
Balance the Equation
Answer:
Na2B4O7 + H2SO4 + 5H2O → 4H3BO3 + Na2SO4
Explanation:
The unbalanced equation is given as;
Na2B4O7 + H2SO4(aq) + H2O → H3BO3(s) + Na2SO4(aq)
Balancing the equation of the reaction involves making sure the number of moles of elements in the reactants to be equal to the number of moles of the element of the products.
The balanced equation is given as;
Na2B4O7 + H2SO4 + 5H2O → 4H3BO3 + Na2SO4
Which images show a container holding a heterogeneous mixture?
what is pollinations
Answer:
Explanation:
A pollinator is an animal that moves pollen from the male anther of a flower to the female stigma of a flower. This helps to bring about fertilization of the ovules in the flower by the male gametes from the pollen grains.