use the word chemistry in a sentence, make it unique and not something I've heard.
Explanation:
The issue of Pollution in our the oceans has changed the chemistry of water.
5. Extend your thinking: What strategies did you use to hunt for moths?
Answer:
Moths are hunted and killed in a variety of ways. I'll explain how we go about hunting and killing moths.
Explanation:
Step-by-Step:
Obtain a sticky trap in the morning and afternoon. It's available at Target and Walmart. Cover it in moth pheromones or anything else you know will attract moths. They will be stuck in the sticky trap for a long time and will eventually die as a result of not being able to escape.
At night, get or buy a lamp and turn it on. This will attract a lot of moths and make them easier to see. Then spray the area with insecticide or insect repellent. Finally, they should perish.
Tip: If a large swarm of moths becomes too much for you to handle, call pest control and they will get rid of them for you!
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are bath bombs covalent or ionic bonds?
Name the following straight-chain
alkane.
CH3CH2CH2CH3
A. butane
B. ethane
C. propane
D. methane
Answer:
B. Propane
Explanation:
just did it edge 2022
Can someone please help I’ll give brainliest!!!
el agua con trozos de hielo es heterogenea o homogenea
A new candy has a very sour taste. If this candy were dissolved in water, the solution would likely be _______.
Answer:
It is a sour candy. And when you put it in water it will dissolves.
Explanation:
Student added a strip of aluminium metal in aqueous copper(2)Sulfate but no reaction occured. Suggest a reason why.
Answer:
See Explanation
Explanation:
It is a common observation that a strip of aluminium metal in aqueous copper(II)Sulfate does not show any visible reaction. Aluminium is normally expected to displace copper in solution since it is higher than copper in the electrochemical series.
The reason for this is that aluminium forms an oxide film around its surface which prevents reaction with aqueous copper(II)Sulfate. This oxides film protects the aluminium surface such that it is now unable to react with the aqueous copper(II)Sulfate
A 250. cm3 sample of neon is collected at standard temperature and pressure. Assuming the volume remains constant, what would be the pressure of the neon at 44.0°C?
a) 118 b)87.2 c) 0.00 d)290
Answer:
The answer is 118 kPa.
Explanation:
A large dam was constructed across a river to create a reservoir on one side. This led to the sinking of nearby forests, which
impacted plants and animals and caused a decrease in biodiversity, Trees were also cut down to construct the dam, which led to
increased soil erosion and reduced soil fertility.
A scientist wants to reduce the impact of the dam's construction and improve the biodiversity of the ecosystem. Which solution
should the scientist choose?
A. relocating people to live in the area around the dam
B. planting trees around the reservoir to decrease soil erosion
c. using synthetic fertilizers to improve soil fertility
OD. building a small series of dams on nearby streams
Answer:
B
Explanation:
One of the main problems is the soil erosion reducing the fertitlity of the soil, thus reducing it's chances of the soil helping plant growth, thus reducing biodiversity. The other selections worsen the problem.
pls can someone mention 5 example of fine chemicals
A scientist distilled a quantity of water to use in an experiment. How much water did he collect if the condensation process released 9040 J of energy? H2O (l) -> H2O (g) ΔHv=2260 J/g a 0.0138 mol b 0.222 mol c 4.00 mol d 0.250 mol I really need the answer plz
Answer:
I know this is very late I am sorry, but
I believe your answer would be C) 4.00 mol.
Correct me if I am wrong.
Explanation:
9040 divided by 2260= 4
0.222 moles of water released 9040 J of energy.
The heat of vaporization is defined as the heat required to convert 1 g of a substance from liquid to vapor. We are told that the heat of vaporization of water is 2260 J/g.
Hence;
1g of water releases 2260 J of heat
xg of water releases 9040 J of heat
x = 1g × 9040 J /2260 J
x = 4 g
1 mole of water contains 18 g
x moles of water contains 4 g
x = 1 mole × 4 g/18 g
x = 0.222 moles
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helpp!!
1.) How many protons?
2.) How many neutrons?
3.) How many electrons?
Answer:
1) 33
2)47
3)33
Explanation:
The atomic number 33 is the same for both protrons and electrons.
Which of the following is an incorrect statement?
Sound is not a form of energy.
Light is a form of energy.
Sound is a form of energy.
Heat is a form of energy.
Answer: Heat is not a form of energy
sound is a form of energy
Explanation:
Cuántos moles de hipoclorito de sodio (NaCIO)se generan cuando reaccionan 5 moles de NaOH
Answer:
5 mol NaOH = 5 mol NaClO
Plantear y balancear reacción: NaOH + HClO ⇒ NaClO + H2O
Como se puede apreciar, los coeficientes estequiométricos son uno por lo tanto, la cantidad de NaClO que se genera será igual a la cantidad de moles que reaccionan de NaOH
Hello if anyone could help it would be great. Why is cooler material more dense than warmer material?
Please help ASAP!!!!!!!!!!!!
1) What properties of a supercritical fluid are more similar to those of a liquid than a gas?
2) What properties of a supercritical fluid are more similar to those of gas than a liquid?
3) Why does CO2 need to be a supercritical fluid for the process of decaffeination?
Write a scientific explanation describing whether energy is required for photosynthesis to occur. IN CER PLZ
Answer:
Plants are called autotrophs because they can use energy from light to synthesize, or make, their own food source. Many people believe they are “feeding” a plant when they put it in soil, water it, or place it outside in the Sun, but none of these things are considered food. Rather, plants use sunlight, water, and the gases in the air to make glucose, which is a form of sugar that plants need to survive. This process is called photosynthesis and is performed by all plants, algae, and even some microorganisms. To perform photosynthesis, plants need three things: carbon dioxide, water, and sunlight.
Answer:
energy is of course required for photosynthesis to occur as photosynthesis is self is the process of plants of green plants to make food or to provide food for themselves in the presence of sunlight carbon dioxide and using water from the soil in the definition you can also say that sunlight is needed for photosynthesis to take place and some light is a form of energy which is solar energy so energy is required for photosynthesis to occur
What is the purpose of photosynthesis?
make glucose
make light
release carbon dioxide
none of the above
Answer:
make glucose
Explanation:
During photosynthesis, plants trap light energy with their leaves. Plants use the energy of the sun to change water and carbon dioxide into a sugar called glucose. Glucose is used by plants for energy and to make other substances like cellulose and starch
For the same angle of incidence, the angle of refraction in
three different media A, B and C are 10°, 25° and 40°
respectively. In which medium the velocity of light will be
maximum?
Answer:
Media C
Explanation:
We know that ratio of sine of angle of incidence to the sine of refraction gives refractive index. Increases in refractive index increases the range of bending. Here angle of incidence is same in every case. The angle of refraction is greater in c. It has less refractive index and hence, light suffer less bending, which increases its speed.
what is the working principle og fractional distillation?
Answer:
The basic principle of this type of distillation is that different liquids boil and evaporate at different temperatures. So when the mixture is heated, the substance with a lower boiling point starts to boil first and convert into vapors. Let consider a liquid-liquid mixture of A and B where A is more volatile than B this mixture can be separated by the following process:
Explanation
Anyone know this question
Answer:
Second option. 3
Explanation:
In order to balance a equation you need to have the same amount of atoms/moles in both sides.
Na₃PO₄ + _ HCl → 3NaCl + H₃PO₄
In reactant side we have 3 Na and we have the same amount in product side.
We also have 1 P and 4 O in both sides of the equation.
As we have 3 moles of NaCl in product side, this means we have:
NaCl → Na⁺ + Cl⁻
3 moles of Na⁺ and 3 moles of Cl⁻. In conclussion we need 3 moles of Cl⁻ in reactant side.Then, the stoichiometry of HCl must be, 3.
3 moles of HCl means that we have 3 moles of protons (H⁺).
HCl → H⁺ + Cl⁻
If you see the phosphoric acid, we also have 3 moles of protons.
H₃PO₄ → 3H⁺ + PO₄³⁻
Complete balanced equation is:
Na₃PO₄ + 3HCl → 3NaCl + H₃PO₄
What is the molarity of a solution that contains 2.21 moles of MgBr2 in 2.93 L of solution?
Answer:
0.754M MgBr2
Explanation:
Molarity = Moles/Volume(liters)
2.21/2.93 = 0.754M MgBr2
What is the latent heat of fusion?
O A. The energy required to break molecular bonds
B. The energy required to go from a solid to a liquid
O C. The energy required to go from a solid to a gas
D. The energy required to go from a liquid to a gas
Answer:
the answer is B. the energy required to go from a solid to liquid
B. The latent heat of fusion is the energy required to go from a solid to a liquid. It is the amount of heat energy that must be added to a substance at its melting point to convert it from a solid to a liquid, without changing its temperature.
What is latent heat?Latent heat is the amount of heat energy required to change the phase of a substance without changing its temperature.
Option A describes the energy required to break molecular bonds, which is called the bond dissociation energy.
Option C describes the energy required to go from a solid to a gas, which is called the latent heat of sublimation.
Option D describes the energy required to go from a liquid to a gas, which is called the latent heat of vaporization.
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What is the mass of 2.5 moles of hydrogen fluoride gas HF
Answer:
You will get 5.0 g of hydrogen.
Explanation:
As with any stoichiometry problem, we start with the balanced equation.
Sn
l
+
2HF
→
SnF
2
+
H
2
Moles of H
2
=
2.5
mol Sn
×
1 mol H
2
1
mol Sn
=
2.5 mol H
2
Mass of H
2
=
2.5
mol H
2
×
2.016 g H
2
1
mol H
2
=
5.0 g H
2
What is the energy of an electromagnetic wave with a electromagnetic wave with a frequency of 3 * 10 Hz ?
Answer:
[tex]E=1.989*10^{-32}J[/tex]
Explanation:
From the question we are told that:
Frequency [tex]f=3 * 10 Hz[/tex]
Generally the equation for Energy of an electromagnetic wave is mathematically given by
[tex]E=hf[/tex]
Where
h=Planck's constant
[tex]h=6.62607015 * 10^{-34}[/tex]
Therefore
[tex]E=6.62607015 * 10^{-34}*3 * 10[/tex]
[tex]E=1.989*10^{-32}J[/tex]
does vinegar conduct? yes or no
Please help
The pressure of a 70.0L sample of gas is 600 mm Hg at 20.0°C. If the temperature drops to 15.0"C and the volume expands to 90.0 L, what will the
pressure of the gas be?
Answer:
"457.2 mm.Hg" is the right solution.
Explanation:
Given:
Pressure,
[tex]P_1=600 \ mm.Hg[/tex]
[tex]P_2 = ?\\[/tex]
Volume,
[tex]V_1=70.0 \ L[/tex]
[tex]V_2=90.0 \ L[/tex]
Temperature,
[tex]T_1=20^{\circ}[/tex]
or,
[tex]=293 \ K[/tex]
[tex]T_2=15.0^{\circ}[/tex]
or,
[tex]=288 \ K[/tex]
As we know,
⇒ [tex]\frac{P_1V_1}{T_1} =\frac{P_2V_2}{T_2}[/tex]
By putting all the given values in the above expression, we get
⇒ [tex]\frac{0.789\times 70}{293} =\frac{P_2\times 90}{288}[/tex]
⇒ [tex]0.188=\frac{P_2\times 90}{288}[/tex]
By applying cross-multiplication, we get
⇒ [tex]P_2=\frac{0.188\times 288}{90}[/tex]
⇒ [tex]=\frac{54.144}{90}[/tex]
⇒ [tex]=0.6016 \ atm[/tex]
or,
⇒ [tex]=457.2 \ mm.Hg[/tex]
If Si bonds with O, what type of bond is it? *
Answer:
covalent bond
the answer is short I don6 know why brainly is telling me it needs to be 20 characters long
(1-6) Which of the electron movements shown below (A, B, C, or D) will emit the highest energy light?
A
B
с
D
na3
ng
n=5
n=6
ОА
OB
Ос
OD
Answer:
I would say D (not sure tho)
Explanation: