Answer:
Suppression
Explanation:
suppression is used to reduce pest populations below the economic threshold if prevention and avoidance tactics have failed--chemical, bio and cultural and other tactics are used which minimize environmental impacts
Answer:
i know im late again but its suppression
Explanation:
When the wave passes through the medium
Answer: hewo, there! your answer is Below
A single disturbance passing through a medium is called a pulse.
Explanation:
When the disturbances are repeated in a periodic manner, the pulses generate a continuous wave. Longitudinal waves (also called compression waves – a slinky pushed and pulled) – moves parallel (same direction) to the wave motion.
Hope this helps !!
Have a amazing day !!!!
Answer:
When the energy of a wave passes through the medium, particles of the medium move. The more energy the wave has, the farther the particles of the medium move. The distance the particles move is measured by the wave's amplitude.
Explanation:
A single disturbance passing through a medium is called a pulse. When the disturbances are repeated in a periodic manner, the pulses generate a continuous wave. Longitudinal waves (also called compression waves – a slinky pushed and pulled) – moves parallel (same direction) to the wave motion.
Balance the following chemical equation by providing the correct coefficients:
[ ]N2 + [ ]H2 -> [ ]NH3
Nitrogen + hydrogen produces ammonia (NH3)
Answer:
1 N2 + 3 H2 --> 2 NH3 :))) !!
Please help me with this homework
HELP!
NaCl is made from 1 Na and 1 Cl. If I have 45.978 grams of Na, how many grams of NaCl can I make? (You will have to convert to moles of Na first!)
explain answer
Answer:
116.88 g
Explanation:
Step 1: Write the balanced equation for the synthesis of NaCl
Na + 1/2 Cl₂ ⇒ NaCl
Step 2: Calculate the moles corresponding to 45.978 g of Na
The molar mass of Na is 22.990 g/mol.
45.978 g × 1 mol/22.990 g = 1.9999 mol
Step 3: Calculate the number of moles of NaCl formed from 1.9999 moles of Na
The molar ratio of Na to NaCl is 1:1. The moles of NaCl formed are 1/1 × 1.9999 mol = 1.9999 mol.
Step 4: Calculate the mass corresponding to 1.9999 moles of NaCl
The molar mass of NaCl is 58.443 g/mol.
1.9999 mol × 58.443 g/mol = 116.88 g
HELPP asap I’ll mark you as brainlister
Answer: the answer is D the last one.
Explanation:
hope this helps! have a good day! :) ^-^
The track along which electricity flows is called a:
fuse
circuit
switch
PLEASE HELP
Find the kinetic energy of the horse using KE=1/2mv^2.
Answer:
78878
Explanation:
What is the molarity of 42.1 g of AgNO3 dissolved in 1.75 L of solution?
2.31 M
B 0.248 M
C 0.142 M
D 24.1 M
Using dimensional analysis, convert 523.7 cm into feet. (1 in= 2.54 cm; 12 in=1 ft)
-15962
-2471
-17.18
-43.64
Answer:
17.18
Explanation:
(1 in = 2.54 cm; 12 in = 1 ft)
Formula:- Divide the length value by 30.48
523.7 ÷ 30.48 = 17.181
Thus, The answer is 17.181
-TheUnknownScientist
Answer:
17.18
Explanation:
I hope its helpful......
Which solute, an electrolyte or a nonelectrolyte, has the greater effect on the boiling point when a given amount of each
solute is dissolved in the same mass of water?
O The nonelectrolyte does because it disperses into molecules.
O The electrolyte does because it disperses into molecules.
O The nonelectrolyte does because it dissociates into ions.
O The electrolyte does because it dissociates into ions.
The solute wether electrolyte or a nonelectrolyte, has the greater effect on the boiling point when a given amount of each solute is dissolved in the same mass of water The nonelectrolyte does because it dissociates into ions.
What is a solute?Solute refers to substances or liquid which can readily dissolve in a solvent. It's concentration is lower to that of solvent.
Therefore, The solute wether electrolyte or a nonelectrolyte, has the greater effect on the boiling point when a given amount of each solute is dissolved in the same mass of water The nonelectrolyte does because it dissociates into ions
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Answer:
D: The electrolyte does because it dissociates into ions.
Explanation:
A gas system has an initial number of moles of 0.693 moles with the volume unknown. When the number of moles changes to 0.928 moles volume is found to be 7.98 L. What was the initial volume in mL?
Answer:
The initial volume in mL is 5959.2 mL
Explanation:
As the number of moles of a gas increases, the volume also increases. Hence, number of moles and volumes are directly proportional i.e
n ∝ V
Where n is the number of moles and V is the volume
Then, n = cV
c is the proportionality constant
∴n/V = c
Hence n₁/V₁ = n₂/V₂
Where n₁ is the initial number of moles
V₁ is the initial volume
n₂ is the final number of moles
and V₂ is the final volume.
From the question,
n₁ = 0.693 moles
V₁ = ?
n₂ = 0.928 moles
V₂ = 7.98 L
Putting the values into the equation
n₁/V₁ = n₂/V₂
0.693 / V₁ = 0.928 / 7.98
Cross multiply
∴ 0.928V₁ = 0.693 × 7.98
0.928V₁ = 5.53014
V₁ = 5.53014/0.928
V₁ = 5.9592 L
To convert to mL, multiply by 1000
∴ V₁ = 5.9592 × 1000 mL
V₁ = 5959.2 mL
Hence, the initial volume in mL is 5959.2 mL
The heat of vaporization of a liquid is 84.0 J/g. How many joules of heat would it take to completely vaporize 172 g of this liquid at its boiling point?
Answer:
14,448 J of heat would it take to completely vaporize 172 g of this liquid at its boiling point.
Explanation:
The heat Q that is necessary to provide for a mass m of a certain substance to change phase is equal to Q = m*L, where L is called the latent heat of the substance and depends on the type of phase change.
During the evaporation process, a substance goes from a liquid to a gaseous state and needs to absorb a certain amount of heat from its immediate surroundings, which results in its cooling. The heat absorbed is called the heat of vaporization.
So, it is called "heat of vaporization", the energy required to change 1 gram of substance from a liquid state to a gaseous state at the boiling point.
In this case, being:
Q=?m= 172 gL= 84 [tex]\frac{J}{g}[/tex]and replacing in the expression Q = m*L you get:
Q=172 g*84 [tex]\frac{J}{g}[/tex]
Q=14,448 J
14,448 J of heat would it take to completely vaporize 172 g of this liquid at its boiling point.
Pls help me I don’t know what to dooooo
What does a negative AHf for a molecule mean?
A. Energy was added when the molecule changed phases.
B. Energy was added when the molecule was formed from its
elements.
C. Energy was released when the molecule was formed from its
elements.
O D. Energy was released when the molecule went through a phase
change.
SUBMIT
Option D I got it right
ANSWER: C (ENERGY WAS RELEASED WHEN THE MOLECULE WAS FORMED FROM ITS ELEMENTS.)
HOPE THE OTHER PERSON IS WRONG!
Which two properties define the critical point of matter in a phase diagram? A. mass and volume B. pressure and volume C. pressure and temperature D. density and temperature E. density and pressure
Answer:
C. pressure and temperature
Explanation:
For each substance, the conditions defining the critical point are the critical temperature, the critical pressure, and the critical density.
Hope this helped!!!
Pressure and temperature are the properties defining the critical point of matter in a phase diagram. The correct option is C.
What is a phase diagram?A phase diagram is a visualization of a material's physical states under various situations of pressure and temperature.
Pressure is on the y-axis of a typical phase diagram, and temperature is on the x-axis. A phase transition when we cross the lines or curves on the phase diagram.
The pressure and temperature point on a phase diagram where a material's liquid and gaseous phases merge into a single phase.
The merged single phase is known as a supercritical fluid above the critical point temperature.
Phase diagrams are graphical representations of the connections between the various phases that appear in a system under equilibrium conditions.
Thus, the correct option is C.
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Can someone answer this pls
Answer:12
Explanation:
Complete each nuclear reaction equation.
Superscript 14 subscript 7 upper N plus superscript 4 subscript 2 upper H e right arrow superscript question mark subscript 8 upper O plus superscript 1 subscript question upper H.
Nitrogen transmutes to form an isotope of oxygen. The superscript for oxygen is?
The subscript for hydrogen is?
Superscript 59 subscript question mark upper C o plus superscript 1 subscript 0 n right arrow superscript 60 subscript 27 upper C o.
Cobalt-59 accepts a neutron to form a new isotope. The subscript for cobalt is?
Nitrogen transmutes to form an isotope of oxygen. The superscript for oxygen is 17
The subscript for hydrogen is 1
Cobalt-59 accepts a neutron to form a new isotope. The subscript for cobalt is 27
Answer:
Oxygen = 17
Hydrogen = 1
Cobalt = 27
Explanation:
Is a animal searching for water a stimulus or response
Answer:
response I believe
Explanation:
i'm pretty sure it's a response cause it's the animal responding to needing water and being thirsty
hope this helps! :)
What does Aluminum and Magnesium oxide create
Answer: MgAl2O4 or Spinel (gemstone)
Explanation:
what are two places that producers can get energy?
Answer:
The Food Chain: The answer has to do with trophic levels. As you probably know, the organisms at the base of the food chain are photosynthetic; plants on land and phytoplankton (algae) in the oceans. These organisms are called the producers, and they get their energy directly from sunlight and inorganic nutrients.
Explanation:
Brainliest?
Calculate the equilibrium constant of the reaction below if the pressures are 1.0atm, 2.0 atm, and 1.0 atm respectively. PCl3 + Cl2 <--> PCl5
Answer:
K = 0.5
Explanation:
Based on the reaction:
PCl₃ + Cl₂ ⇄ PCl₅
The equilibrium constant, K, is defined as:
K = P PCl₅ / P PCl₃ * P Cl₂
Where P represent the pressure at the equilibrium for each one of the gases involved in the equilibrium.
As:
P PCl₅ = 1.0atm
P PCl₃ = 1.0atm
P Cl₂ = 2.0atm
K = 1.0atm / 1.0atm * 2.0atm
K = 0.5A nuclear power plant is used to generate:
steam
solar energy
heat energy
electricity
Answer:
Anuclear power plant is used to generate electricity
Answer:
Anuclear power plant is used to generate electricity
thank me later
Explanation:
I need answers to the lab report.
Answer:
Title.
Abstract.
Introduction.
Method.
Results and analysis.
Discussion.
Conclusion.
References.
What is the equilibrium constant for the chemical equation:
1. N2 (g) + 3H2 (g) ↔ 2NH3 (g)
At equilibrium, the concentration of N2 is 2.5 x 10-4 M, the concentration of H2 is 6.4 x 10-3 M, and the concentration of NH3 is 5.3 x 10-2 M.
Write out the equilibrium constant, Keq, and show you work.
2. Mg3P2 (s) ↔ 3Mg+2 (aq) + 2P-3 (aq)
At equilibrium, the concentration of Mg3P2 is 5.5 x 10-6 M, the concentration of magnesium ions is 7.2 x 10-5 M, and the concentration of phosphide ions is 9.8 x 10-8 M.
Write out the equilibrium constant, Keq, and show you work.
Answer:
beaner
Explanation:
Answer:
x= 1 /5 y+ 4 /5
Explanation:
Let's solve for x.
10x−2y=8
Step 1: Add 2y to both sides.
10x−2y+2y=8+2y
10x=2y+8
Step 2: Divide both sides by 10.
10x /10 = 2y+8 /10 x= 1 /5 y+ 4 /5
When a stalactite is formed by water leaving mineral deposits from the ceiling of a cave, this is caused by_____
A:Erosion
B: deposition
Answer:
it is b
Explanation: As the carbon dioxide is released, calcite is precipitated or redeposited on cave walls, ceilings and floors. As the redeposited minerals build up after countless water drops, a stalactite is formed.
How many grams of water, H 2 O , is given o when 62.1 g of propane, C 3 H 8 , burns?
Answer:
101.62 grams of water is given o when 62.1 g of propane burns.
Explanation:
Propane gas (C₃H₈) burns with oxygen gas and products carbon dioxide gas and liquid water. The balanced reaction is:
C₃H₈ + 5 O₂ → 3 CO₂ + 4 H₂O
By stoichiometry, the following amounts of moles of each compound participate in the reaction:
C₃H₈: 1 mole O₂: 5 moles CO₂: 3 moles H₂O: 4 molesBeing the molar mass of each compound:
C₃H₈: 44 g/mole O₂: 32 g/moleCO₂: 44 g/moleH₂O: 18 g/moleBy stoichiometry, the following mass quantities of each compound participate in the reaction:
C₃H₈: 1 mole* 44 g/mole= 44 grams O₂: 5 moles* 32 g/mole= 160 gramsCO₂: 3 moles* 44 g/mole= 132 gramsH₂O: 4 moles* 18 g/mole= 72 gramsThen you can apply the following rule of three: if by stoichiometry 44 grams of propane produces 72 grams of water, 62.1 grams of propane how much mass of water does it produce?
[tex]mass of water=\frac{62.1 grams of propane*72 grams of water}{44 grams of propane}[/tex]
mass of water= 101.62 grams
101.62 grams of water is given o when 62.1 g of propane burns.
Based on information from the periodic table, what does this image represent?
A. A neutral fluorine atom
B. A negatively charged fluoride atom
C. A positively charged fluoride ion
D. A neutral neon atom
Based on the information given, the image represents a negatively charged fluoride atom (Option B)
Composition of atomAn atom is composed of a centrally placed nucleus (containing protons and neutrons) and a cloud of electrons revolving round it.
How to determine the chargeFrom the question given above, the following data were obtained:
Proton = 9Neutron = 10Electron = 10Charge =?Charge = Proton – Electron
Charge = 9 – 10
Charge = –1
Note
Element with proton number of 9 is fluorine
Thus, we can conclude that the image represents a negatively charged fluoride ion (Option B)
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Answer:
B
Explanation:
What is the difference between the reaction of CH3COOH with H20 and with OH?
Answer:
Explanation: CH3COOH(aq) + H2O(l) ↔ CH3COO-(aq) + H3O+(aq) acid base ... sulfuric acid can react with either OH- or. H.
Which of the following statements explains which trial has a lower concentration of the reactant? (5 points) Trial 1, because the average rate of the reaction is lower. Trial 1, because this reaction lasted for a longer duration than Trial 2. Trial 2, because this reaction was initially fast and later slowed down. Trial 2, because the v
Answer:
A)Trial 1 because the average rate of reaction is lower.
Explanation:
I accidentally gave myself low rating my bad
The statement that best explain which trial has a lower concentration of the reactants is Trial 1, because this reaction lasted for a longer duration than Trial 2.
What is a Chemical reaction?Chemical reaction refers to reaction that take place between reacting substances in which the chemical substances are transformed to products.
When the concentration of the reactants increases, more molecules tend to interact with each other in order to form new compounds, and the rate of reaction increases. When the concentration of the reactants reduces, there are little of that molecule present, and the rate of reaction decreases
Therefore, The statement that best explain which trial has a lower concentration of the reactants is Trial 1, because this reaction lasted for a longer duration than Trial 2.
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Horticulture 100 POINTS Hurry
Which of the following is an example of an indirect expense?
A. corn oil
B. animal fodder
C. export commodity
D. snack foods
Answer:
B!
Explanation:
Answer:
i know im late but i just really want the points. the answer is b.
Explanation: