Answer:
386.14 K ( 113.14 ºC)
Explanation:
Initial Volume V1 = 28 L
Initial Temperature T1 = 45 + 273 = 318 K
Final Temperature T2 = ?
Final Volume V2 = 34 L
The relationship between these quantities is given by the charles law equation;
V1 / T1 = V2/ T2
T2 = V2 * T1 / V1
Inserting the values
T2 = 34 * 318 / 28
T2 = 386.14 K
Give an example of a decomposer, and explain what would happen if decomposers were absent from a forest ecosystem. Provide evidence to support your claim and explain your reasoning
Answer: Bacteria, some insects, and fungal species are the decomposers of the dead and decaying matter.
Explanation:
The decomposers are the organisms which act and feed on the dead and decaying organic matter so as to obtain energy from it and degrade it to the simple forms that can be utilized by the plants. Bacteria, some insects and fungi that live in the soil and on the decaying matter. The fungi for example decay on the lignin present in the wood so helps in wood decomposition of trees. If the decomposer like fungi are absent the wood mass will not decompose and it will remain as waste and can be used by the plants in the form of nutrients.
Can someone please help I don’t now which one to put
Answer:
2nd or 3rd dyfudhfkfhxhxhxjxjcjcifid
Marcus wants to use two objects to compare the sizes of a proton and an electron. If he uses a basketball for a proton, which object would best represent an electron?
A
a pea
B
a bowling ball
C
a soccer ball
D
a beach ball
Answer:
A
Explanation:
Which radioisotope requires long-term storage as the method of disposal, to protect living things from radiation exposure over time?
Pu-239
FR-229
Fe-53
P-32
Answer:pu-239
Explanation:
Pu-239 is regarded as the radioisotope requires long-term storage as the method of disposal, to protect living things from radiation exposure over time
Disposal of radioactive nuclear waste is often regarded as a problem.
The waste sources are:
Nuclear power reactors Bomb-related nuclear materialDisposal of bomb-grade plutonium is often difficult.
The longer lived isotopes are:
Plutonium-239 whose t1/2 is 24,110 years, Plutonium-240 whose t1/2 is 6,540 years, Curium-245 whose t1/2 is 8,500 years. etc.The storage of the longer lived elements is through containment for the next several thousand of years.
The control or management of radioactive waste is a hard, multifaceted procedure.
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NaBr
what is the name for ionic compounds
Answer:
Its name is Sodium Bromide .
Answer:
=>. the chemical Name of NaBr
=>. sodium bromide
hope it helps
what is the relative mass of an electron?
1+
-1
2
0
Answer:
The relative mass of an electron would be -1.
A leader from Louisiana is claiming that it is necessary to include the effects of tornadoes in his city’s emergency plan for natural disasters. Use data from Map 1, the graphs, and what you know about tornadoes to support his claim.
please answer this now i will give brainliest to first person who got it correct.
and don't answer it if you just gonna write stuff that weren't don't even make since to get the point.
Answer:
i dont know either im sorry
Explanation:
Answer:
Where are the graphs?
Explanation:
What is the difference between a physical and chemical change? (Use words reactants, products, atoms and molecules.)
Answer:
A physical change, such as a state change or dissolving, does not create a new substance, but a chemical change does. In a chemical reaction, the atoms and molecules that interact with each other are called reactants. In a chemical reaction, the atoms and molecules produced by the reaction are called products.
Which statement is true about energy? A. Energy never moves. B. Energy is never destroyed. C. Energy always changes to heat. D. Energy always changes to light.
Answer: energy is never moves
Explanation:
Oxygen has an electronegativity of 3.4, phosporus has an electronegativity of 2.2 The bond between them is
a. polar covalent
b. non polar covalent
c. metallic
d. ionic
Answer:
B. polar covalent
Explanation:
Calculate the molecular weight of 0.2g H3X solution if 50ml of this acid neutralized with 40ml of 0.03N Ca(oH)2 then calculate strength of this solution in ppm
Answer:
1. Molecular weight = 333.3 g/mol
2. Strenght = 2222.2 mg/L
Explanation:
First, we need to find molarity (M) from normality (N) as follows:
[tex] N = nM [/tex]
Where n is the number of OH⁻ = 2
[tex] M = \frac{N}{2} = \frac{0.03}{2} = 0.015 mol/L [/tex]
Now, when the H₃X solution is neutralized with Ca(OH)₂ we have:
[tex]\eta_{H_{3}X} = \eta_{Ca(OH)_{2}} = M_{Ca(OH)_{2}}*V_{Ca(OH)_{2}} = 0.015*0.04 = 6 \cdot 10^{-4} moles[/tex]
Hence, the molecular weight (MW) of H₃X is:
[tex] MW = \frac{m_{H_{3}X}}{\eta_{H_{3}X}} = \frac{0.2 g}{6 \cdot 10^{-4} moles} = 333.3 g/mol [/tex]
Finally, we can calculate the strength (S) of this solution in ppm as follows:
[tex] S = \frac{m}{V} = \frac{200 mg}{0.050 L + 0.040 L} = 2222.2 mg/L [/tex]
I hope it helps you!
how many moles are in 3.01 x 10^22
Answer:
The answer is "5 moles".
Explanation:
Please find the complete question in the attached file.
[tex]\to 3.01 \times (10^{22}) = 0.0499822251 \approx 0.05 \ moles[/tex]
HIIII ! any k-pop & K-drama stans!? REMEMBER TO THINK POSITIVE & EAT 3 MEALS A DAY, READ A BOOK (ANY BOOK, SHORT OR LONG) REMEMBER TO SHOWER & DRINK LOTS OF WATER! REMEMBER TO LOVE YOURSELF FIRST ! ❤️ you did a great job today & I hope you keep on continue doing great just like today!!
Answer:
You know, i always say no but when i watch one i get addicted so... yeah. thanks for the positive messages
Explanation:
Thank you so much for spreading a postive message.
I dont know who needs to here this and I don't know you but I know life is hard. I know that no one gets it. I know you may feel depressed or stressed or not know who you are. I know that school is really hard right now. I know that you may have suicidal thoughts. I know because I've been there and still am but im getting better everyday. Progress is Perfect. I am always here to talk about it or anything you need.
3)
According to the cell theory, where do cells come from?
Answer:
cells comes from preexisting cells through the process of cell division
Which daily task involves a mix of simple and complex technology?
A molecule, Z, contains two atoms of oxygen, six atoms of hydrogen and three atoms of carbon. What is the formula of Z?
Answer:
C3H6O3
Explanation:
Hydroxyacetone
A low ph scale would indicate that the water is A. Neutral B. Basic C. Acidic
does all Newton's laws work together
Solid calcium carbonate breaks down into carbon dioxide gas, oxygen gas, and solid calcium, write an equation for described reactions chemistry
Answer:
CaCO₃ ------> CaO + CO₂
Note: The breakdown products of solid calcium carbonate is not carbon dioxide gas, oxygen gas, and solid calcium. Rather, it is calcium oxide and carbon dioxide as shown in the reaction equation above.
Explanation:
Calcium carbonate is a mineral which occurs in nature in rocks as calcite and limestone. It is also the main component of eggshells, snail shells, seashells and pearls. It has the molecular formula CaCO₃.
Calcium carbonate or limestone decomposes into calcium oxide and carbon dioxide when heated and the reaction is used to make quicklime and carbon dioxide gas. The equation of the reaction is given below:
CaCO₃ ------> CaO + CO₂
Calcium oxide, one of the products of The decomposition reaction is known as lime and is an important mineral used for many purposes such as reducing the acidity of soils, in the production of limelight, as well as serving as the main ingredient in cement.
The main use of calcium carbonate is in the construction industry as an ingredient of cement. Calcium carbonate is also an important mineral required by sea organisms for making their shells.
Disproportionation is a process in which a substance
can act only as a reducing agent.
can act only as an oxidizing agent.
is both an oxidizing and a reducing agent.
is neither an oxidizing nor a reducing agent.
Answer:
C. is both an oxidizing and a reducing agent.
Explanation:
PLEASE HELP ASAP
What chemical combines with nitrogen dioxide to form nitric acid?
Opg
H
OH
02
03
Answer:
opg
Explanation:
A series of chemical reactions transform Volatile Organic Compounds (VOCs) into substances that combine with nitrogen dioxide to produce PAN (Peroxyacytyl nitrate), yet another element in smog. Nitrogen dioxide in the air also reacts with water vapor to form nitric acid, one of the types of acid in acid rain.
How have animals developed physiological adaptations to survive in colder climates?
can someone help me with this plz??
Answer:
I dont know at all and that is confusing.
Lions and cheetahs prey on wildebeests that graze in the grasslands of the african savanna what likely effect would increased rainfall over several rainy seasons have on the populations of wildebeests lions and cheetahs?
Answer:
All three populations would increase.
Explanation:
where are chemicals found?
A.) only in liquids
B.) only in air
C.) in solids,liquids, and gases
D.) only in powders
Answer: c
Explanation: pretty sure its c :]
Would you expect to find older or newer fossils in rock layers closer to the surface? Why?
Answer:
Newer
Explanation:
older fossils and rocks are found in lower strata than younger fossils and rock layers because the top layer fossils have not been there as long as the bottom layer fossils to be found deeper in the ground
0.074 liters of a 15 M solution need to be diluted so that the new
concentration is 3.40 molar. What should the new volume of the solution
be?
A) 0.17 liters
B) 0.33 liters
C) 2.3 liters
D) 3.2 liters
Answer:
3.2
Explanation:
i caculated give me a 1 star if incorrect
A gas occupies 10.2 liters at 0.60 atm. What is the pressure if the volume becomes 3.0 L?
What is the best way to statically charge an object,
Answer:Static electricity can be created by rubbing one object against another object.
Explanation: This is because the rubbing releases negative charges, called electrons, which can build up on one object to produce a static charge
How many atoms are present in 3.500 mol of NH3? NEED ANSWER ASAP