Answer:
cyclononane C9H18 nonane
Why might having mud in an ecosystem be important?
Mud can replace producers in an ecosystem.
Pigs love to wallow in mud.
Mud can replace consumers in an ecosystem.
An insect needs mud wallows to breed; that insect pollinates several flowers in that ecosystem.
plsssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss answer with one of the options
An insect needs mud wallows to breed; that insect pollinates several flowers in that ecosystem.
Having mud in an ecosystem is important because Insects are very important as primary or secondary decomposers in the ecosystem. These insects need mud wallows to breed. That insect pollinates several flowers in that ecosystem.
Why do insects like mud?Muddy sediments recycle organic matter back into nutrients for plant photosynthesis. Butterflies and other insects search for moisture, salt, and other nutrients. It's not just damp patches of soil that draw butterflies. Some are attracted by wet sand and dung.An insect needs mud wallows to breed.How do insects play an important role in the ecosystem?Insects like Bees are some of the most important pollinators in the ecosystem.Without bees, most of the plants we rely on would not be able to produce most of the food we eat.Therefore, the mud in an ecosystem is most important as it provides a place for insects to breed and these insects play a major role in the ecosystem like pollination.
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If 18.5 grams of CuCl2 react with 22.8 grams of NaNO3, what mass of NaCl can be formed?
CuCl2 + NaNO3 → Cu(NO3)2 + NaCl
12.4 g NaCl
15.7 g NaCl
16.2 g NaCl
28.4 g NaCl
Answer:
From above calculations, gives the limited amount of NaCl. So, 15.7 g of NaCl would form from given amounts of reactants.
Explanation:
thank me later
Name the fundamental unit involved in the derived unit joule?
Answer:
Energy
Explanation:
What is the limiting reactant when 19.9 g CuO react with 2.02 g H2?
Answer:
Explanation:
use the equation
moles = mass/mr
=19.9/79.5
=0.250moles of CuO
then do the same for
H = 2.02/1
=2.02
so CuO is the limiting reagent because there is less amount of it.
Hope this helps :)
what would be the formula for ethane?
Answer:
C₂H₆
Explanation:
The formula for ethane is C₂H₆
Which of the following is True about nitrogen -14 and nitrogen -16
A, They are completely different Atoms
B, they are the exact same atom
C, they are the same except that carbon -14 has 2 extra electrons
D, they are isotopes of the same atom
Question 27
How many molecules are in 28 g of CO2?
O 3.5 x 10-21
O 7.42 x 1026
3.83 x 1023
O 3.8 x 1044
Answer:
3.83x10^23
Explanation:
number of moles of co2 is 0.636364
but number of molecules = number of moles times 6.02x10^23
How many grams of Potassium are in 10 moles of potassium?
Answer:
You can view more details on each measurement unit: molecular weight of Potassium or grams The molecular formula for Potassium is K. The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles Potassium, or 39.0983 grams.
Explanation:
Help pleaseeee
you wish to make a potassium carbonate solution with a molar concentration of 0.25mol/dm³,but you only have 11.7g of potassium carbonate. what is the maximum volume of solution you can make?
Answer:
0.337 dm³
Explanation:
M(K2CO3) = 138.2 g/mol
1) 11.7 g * (1 mol/138.2 g) =0.08466 mol
2) 0.08466 mol * (1 dm³/0.25 mol) = 0.3386 dm³ ≈ 0.337 dm³
What is a gas’s temperature in Celsius when it has a volume of 25 L, 203 mol, 143.5 atm?
To Find :
Gas’s temperature in Celsius when it has a volume of 25 L, 203 mol, 143.5 atm .
Solution :
We know, by ideal gas equation :
[tex]PV =nRT\\\\T = \dfrac{PV}{nR}[/tex]
Here, R is universal gas constant and [tex]R = 0.082 \ L \ atm \ mol^{-1} \ K^{1}[/tex]
Putting all given values and R in above equation, we get :
[tex]T = \dfrac{PV}{nR}\\\\T = \dfrac{143.5\times 25}{203 \times 0.082}\ K\\\\T = 215.52\ K[/tex]
Hence, this is the required solution.
Answer quickly please
How much voltage is required to run 0.5 A of current through a 50-ohm resistor? Use V = IR
Answer:
The answer is 10
For the reaction, Cl2 + 2KBr --> 2KCl + Br2, how many moles of potassium chloride, KCl, are produced from 102g of potassium bromide, KBr (MM: 119.002 g/mol)?(answer has 3 decimal places)
Solution :
From the balanced chemical equation, we can say that 1 moles of KBr will produce 1 moles of KCl .
Moles of KBr in 102 g of potassium bromide.
n = 102/119.002
n = 0.86 mole.
So, number of miles of KCl produced are also 0.86 mole.
Mass of KCl produced :
[tex]m = 0.86 \times Molar \ mass \ of \ KCl\\\\m = 0.86 \times 74.5 \ gram \\\\m = 64.07\ gram[/tex]
Hence, this is the required solution.
where is reverse osmosis used
Answer:
Reverse osmosis systems find frequent use in the following: Boiler feed-water treatment: used to reduce solids content of waters prior to feeding into boilers for power generation or otherwise.
Explanation:
Calculate the mass of oxygen produced when 2000 kg of aluminium oxide is completely electrolysed.
Answer:
Explanation:
Given that:
The mass of aluminium oxide Al₂O₃ = 2000 kg = 2000 000 g
Molar mass of Al₂O₃ = 101.96 g/mol
no of moles = mass / molar mass
no of moles of Al₂O₃ = 2000 000 g/ 101.96 g/mol
no of moles of Al₂O₃ = 19615.4 mol
From the reaction:
4Al + 3O₂ ⇒ Al₂O₃
To determine the moles of O₂ in Al₂O₃:
Then;
19615.4 mol * 3/2 mol of O₂ = 29423.1
The mass of oxygen now = 29423.1 × 32 g
= 941539.2 g
To kg;
= (941539.2 / 1000) kg
= 941.5 kg
Q1 and Q1 represent ?
Answer:yes they do represent
Help! Locks at 12
Given the balanced equation representing a nuclear reaction:
Which particle is represented by X?
Answer is #4 (neutrons)
Explanation:
Total mass before the reaction is 236 amu. The total mass of the two elements is 233 amu. This means that there are 3 amus carried by element X. Looking at the total atomic number of the two elements after reaction, it's 92, the same as the one at the beginning. This means that element X has zero atomic number, which could only be a neutron.
Answer: is 4
Explanation:
I was doing the same one
In the diagram, which organism is a primary consumer?
clover
owl
rabbit
hawk
Answer:
Rabbit they eat plants for energy
Explanation:
Answer:
Clover
Explanation:
A clover is the only organism that makes its own food, usually from the sun. The other three need to eat to get their energy. Rabbits eat plants, owls eat insects, and hawks eat other types of animals such as fish.
A mixture of gases with a pressure of 900 mm Hg contains 20% of oxygen and 80% of nitrogen by volumeWhat is the partial pressure of the oxygen gas in the mixture?
A-45mmHg
B-180mmHg
C-210 mmHg
D-320 mmHg
Answer:
180 mmHg
Explanation:
Total volume of gases = 20% + 80%= 100%
Total pressure of gases = 900 mm Hg
Note that partial pressure of a gas = mole fraction × total pressure
Mole fraction of oxygen = 20/100
Hence partial pressure of oxygen= 20/100 × 900 mm Hg
partial pressure of oxygen= 180 mmHg
when electrical energy is converted into any other deform of energy, the total amount of energy
A haloalkane 'X' if heated with sodium metal in presence of dry ether produces
2,3 - dimethyl butane
as major product
Identify x with chemical reaction.
Answer:
2 halo - propane
Explanation:
We are told that a halo alkane is heated with sodium in the presence of dry ether to produce 2,3 - dimethyl butane.
Now, according to Wurtz reaction this formation from heating with sodium in the presence of dry ether is done by 2 alkyl halides in the form of;
2RX + 2Na → R−R + 2Na+X−
Now, formula for 2,3 dimethyl butane is (CH₃)₂CHCH(CH₃)₂
Thus, from the Wurtz reaction, we can write that;
2RX + 2Na → (CH₃)₂CH - CH(CH₃)₂ + 2Na+X−
So, R = (CH₃)₂CH
This means the original halo alkane has 3 carbon atoms and thus, we can say it is 2 halo - propane.
If the limiting reactant in a chemical reaction is impure, what will happen to the percentage yield of the product?
Answer:
it may also become impure,I think.
What can a drop of liquid mercury be described as?
a pure substance and a compound
an impure substance that is reactive
an impure substance that is unreactive
a pure substance and an element
Answer:
a pure substance and an element”
Explanation:
Calculate the atomic mass of Nitrogen if the two common isotopes of Nitrogen have masses of 31.972 amu (85.00 %
abundance) and 33.967 amu (15.00% abundance)
Explanation:
hope the picture above help u understand:)
4. (08.01 MC)
Which of the following describes a unique property of water that helps sustain marine life? (5 points)
It freezes upward from the bottom unlike other liquids that freeze downward from the top.
It has a lower density in its solid state than it does in its liquid state.
It shows changes in density at temperatures above 4 °C.
Am It cools faster and heats up faster than most other liquids.
Answer:
It has a lower density in its solild stae than it does in its liquid state.
Explanation:
Ice floats, allowing life underneath to leave despite the top freezing.
The statement that describes a unique property of water that helps sustain marine life is that has a lower density in its solid state than it does in its liquid state.
What are the unique properties of water?Water is a unique molecule that possesses unique properties as follows:
Water is polarWater is an excellent solventWater has high heat capacityWater has high heat of vaporizationWater has cohesive and adhesive propertiesWater is less dense as a solid than as a liquidThese unique characteristics of water helps aquatic organisms sustain life in a marine environment.
Therefore, statement that describes a unique property of water that helps sustain marine life is that has a lower density in its solid state than it does in its liquid state.
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Geef de systematische naam van P2S3
The question is: Give the systematic name of [tex]P_{2}S_{3}[/tex].
Answer: The systematic name of [tex]P_{2}S_{3}[/tex] is diphosphorus trisulfide.
Explanation:
As the chemical formula of given compound is [tex]P_{2}S_{3}[/tex]. This sows that there are two phosphorus atoms so a prefix "di" will be added before the name of phosphorus atom.
Whereas there are three sulfur atoms present here. So, a prefix "tri" will be added before naming the sulfur atom. As sulfur is the anion so a suffix '-ide' will be added to its name.
Hence, name of the compound [tex]P_{2}S_{3}[/tex] is diphosphorus trisulfide.
Thus, we can conclude that the systematic name of [tex]P_{2}S_{3}[/tex] is diphosphorus trisulfide.
In the diagram below, what will allow more solute to be dissolved in the
solvent?
Answer:
missin a diagram buddy
Explanation:
How many grams H2 are needed to react with 2.80 g of N2?
Answer:
N2 +3 H2 → 2 NH3
so we have 2180 g of N2
or 2.80 g ÷ 28.02 g/mol = 0.100 mol
1 mol of N2 react with 3 moles of H2
Therefore 0.100 mol of N2 react with 0.3 moles of H2
0.300 mol X Molar mass (2.00 g/mol) = 0.600 g
0.600 g of H[tex]_2[/tex] are needed to react with 2.80 g of N[tex]_2[/tex]. Mole is one of the International System for Units' seven foundation units (SI).
What is mole?A mole is just a measuring scale. In reality, it is one of the International System for Units' seven foundation units (SI). When already-existing units are insufficient, new ones are created. Using absolute amounts of atoms, molecules, or ions would be problematic as well since chemical reactions frequently occur at levels that use grams would be inappropriate.
A mole consists of precisely 6.022140761023 particles. The "particles" might be anything, from tiny things like electrons and atoms to enormous things like stars or elephants.
N[tex]_2[/tex] +3 H[tex]_2[/tex] → 2 NH[tex]_3[/tex]
2.80 g ÷ 28.02 g/mol = 0.100 mol of N[tex]_2[/tex]
1 mol of N[tex]_2[/tex] react with 3 moles of H[tex]_2[/tex]
0.100 mol of N[tex]_2[/tex] react with 0.3 moles of H[tex]_2[/tex]
0.300 mol X Molar mass (2.00 g/mol) = 0.600 g of H[tex]_2[/tex]
Therefore, 0.600 g of H[tex]_2[/tex] are needed to react with 2.80 g of N[tex]_2[/tex].
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What are 1A, 3B, and 7A examples of on the periodic table?
groups.
numbers
periods
O rows
Answer: Groups
Explanation:
I took the quiz
PLEASE HELP. requires 35 mL of NaOH(aq) to neutralize
10. mL of 0.10 M HCl(aq). The concentration of the NaOH(aq) is
Answer:
0.0286M
Explanation:
Using the formula as follows:
CaVa = CbVb
Where;
Ca = concentration of HCl acid (M)
Cb = concentration of NaOH base (M)
Va = volume of HCl acid (mL)
Vb = volume of NaOH base (mL)
According to the information provided in this question;
Ca = 0.10 M
Cb = ?
Va = 10mL
Vb = 35mL
Using CaVa = CbVb
Cb = CaVa/Vb
Cb = (0.10 × 10) ÷ 35
Cb = 1 ÷ 35
Cb = 0.0286M
What is the concentration of a solution containing 0.32 moles of NaCl in 3.4 liters?
Answer:
To get the molarity we need to divide the number of moles of NaCl by the volume of the solution. So, 0.32 moles NaCl divided by 3.4 L, and that gives 0.094 M NaCl.
