30 points ASAP Which are limiting nutrients for plant growth?
water and nitrogen
nitrogen and carbon
carbon and phosphorus
phosphorus and nitrogen
I think its phosphorus and nitrogen
answer this correctly, only sincere answers please. I really need help. I will do all I can to make someone answer this. Thanks! ASAP
Explain the relationship between pH, POH, hydronium concentration and hydroxide concentration and be prepared to complete the chart below based on the provided knowns.
Complete the chart below based on the provided knowns.
H+ ______x_______
OH - 1 x 10^-11______
pH 3_____________
POH _____y_______
Answer:
See Explanation
Explanation:
Let us recall that;
[H^+] [OH^-] = 1 * 10^-14
Where;
[OH^-] = 1 x 10^-11
Then;
[H^+] = 1 * 10^-14/1 x 10^-11
[H^+] = 1 * 10^-3
pH = -log [H^+]
pH = -log(1 * 10^-3)
pH = 3
Also;
pH + pOH = 14
pOH = 14 - pH
pOH = 14 -3
pOH = 11
Why do different parts of the world have such different animals?
Answer:
a
Explanation:
In the covalent compound CH3, the Greek prefix used to represent the anion is Answer here
Answer:
Tri.
Explanation:
''Tri'' is the Greek prefix used to represent the CH3 because there are three hydrogen atoms to form the covalent compound so in Greek method ''Tri'' is used for three. In Greek system, there are certain names for prefixes such as ''di'' is used for two, ''tri'' is used for three, ''tetra'' is used for four etc. This method only provides information about the number of atoms that form the covalent compound.
g Alkenes and alkynes are called unsaturated compounds because ________. they have fewer hydrogen atoms attached to the carbon chain than alkanes they have fewer carbon atoms than alkanes they have the maximum number of hydrogen atoms attached to each carbon in the compound they have more carbon atoms than alkanes they have more hydrogen atoms attached to the carbon chain than alkanes
Answer:
They have fewer hydrogen atoms attached to the carbon chain than alkanes
Explanation:
Let's compare ethane (an alkane) with ethene (an alkene) and ethyne (an alkyne):
Ethane's formula is C₂H₄, while ethene's is C₂H₄ and ethyne's C₂H₂.As you can see, alkenes and alkynes have fewer hydrogen atoms attached to the carbon chain due to them having multiple bonds between the carbon atoms.
what is the difference between diffusion and osmoses
Answer:
Diffusion means that particles travel from a higher concentration to a lower concentration region before balance is achieved. The semi-permeable membrane is present in osmosis, so that only solvent molecules can travel freely to equalize the levels.
A neutral atom with the electron configuration 2-7 would most likely form a bond with an atom having the configuration
Answer:
1s2 2s2
Explanation:
In each of the molecules drawn below one chemical bond is colored red. Decide whether this bond is likely to be polar or not. If the bond is likely to be polar, write down the chemical symbol for the atom which will have more negative charge. The highlighted bond is polar and the more negative atom is The highlighted bond is nonpolar. The highlighted bond is polar and the more negative atom is The highlighted bond is nonpolar. The highlighted bond is polar and the more negative atom is The highlighted bond is nonpolar.
The question is incomplete, the complete question is shown in the image attached to this answer
Answer:
See Explanation
Explanation:
I want us to bear something in mind. A compound is polar when there is a considerable difference in electronegativity between two bonding atoms in the molecule.
The implication of this is, the shared electron pair of the bond will be closer to the atom of greater electronegativity than the atom of lesser electronegativity thereby creating a dipole in the molecule.
Let us consider each of the compounds;
For Cl-F, the highlighted bond is polar and F is the more electronegative atom
For H-Br, the highlighted bond is polar and Br is the more electronegative atom
For N≡N, the highlighted bond is nonpolar since it is a homonuclear diatomic molecule.
elect the best choice, and briefly indicate the reason for your choice: a. Lowest ionization energy: K Rb Cs b. Most favorable electron affinity: Cl Br I c. Most energy required to remove an electron: Cu Cu Cu2
Answer:
Lowest ionization energy: Cs
Most favorable electron affinity: Cl
Most energy required to remove an electron: Cu2+
Explanation:
Ionization energy decreases down the group. That means that as we move down the group, the ionization energy of elements decreases due to greater distance of the outermost electron from the nucleus and greater screening effect of inner electrons on this outermost electron. Hence Cs has the lowest ionization energy.
Electron affinity of halogens decreases down the group. Hence, Cl possess the most favorable electron affinity.
When an electron has been removed from an atom, the removal of the next electron is usually harder. Thus, the second ionization energy is always greater than the first ionization energy and so on. Thus, it is most difficult to remove an electron from Cu^2+ from which two electrons have already been removed.
Which statement describes the law of conservation of energy?
A. All systems will exchange matter and energy with their surroundings.
B. All systems can exchange energy, but not matter, with their surroundings.
C. Energy cannot be created nor destroyed, but it changes from one form to another.
D. Energy is destroyed in most chemical reactions when new products are formed.
Answer:
Energy cannot be created nor destroyed, but it changes from one form to another.
Explanation: got it
Yo wassup with these links every time I ask a question there’s a link everywhere it’s making me mad this needs to stop
A mystery compound is a liquid with a boiling point of 50°C. is it likely to be in Ionic compound .why or why not?
Answer:
No, because it is low, which is characteristic of covalent compounds.
Explanation:
Hello there!
In this case, for the analysis of this liquid whose boiling point is 50 °C, it is necessary for us to keep in mind that ionic compounds have high boiling points whereas covalent compounds tend to have lower boiling points. This is due to the fact that ionic compounds have stronger intermolecular forces, so more thermal energy is required for the reaction; and covalent compounds are more weakly held together so their boiling points tend to be relatively low.
In such a way, since 50 °C is a relatively low boiling point, in comparison to waters that is about 100°C and it is polar covalent, we infer this compound is not likely to be an ionic compound but a covalent compound.
Regards!
Define "mole in chemistry terms
Answer:
Can you please post a pictah.
Explanation:
Answer: A mole is defined as 6.02214076 × 1023 of some chemical unit, be it atoms, molecules, ions, or others. The mole is a convenient unit to use because of the great number of atoms, molecules, or others in any substance.
TRUE OR FALSE?
The reason for forming multiple bonds is an interaction of end to end type between unhybridized p orbitals.
20 points!
Answer:
I think its false
Explanation:
What common compounds are in selenium? Where are these compounds found and what are they used for? What properties do they have?
Please answer AS SOON AS POSSIBLE!!! Thanks!!!!!
Answer:
tanaka..........................
Which reaction type is the following: AgF + CaCl2 --> AgCl + CaF2
Explanation:
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Acetylene, C2H2 (also known as ethyne), is commonly used as a fuel for welding torches.
a. True
b. False
Answer:
True
Explanation:
Acetylene or Ethyne is the simples form of hydrocarbon with triple bond in it. It is the first member of alkyne series. It colorless, highly inflammable gas. This is why is used in oxy-acetylene torches used for welding and cutting materials. It is also used as raw material in synthesis of many organic chemicals and plastics.
So, the given statement is true.
How many grams of NiNi are formed from 55.3 g55.3 g of Ni2O3Ni2O3?
2Ni2O3(s)⟶4Ni(s)+3O2(g)2Ni2O3(s)⟶4Ni(s)+3O2(g)
Step 1: Show the strategy for solving this problem.
You are currently in a labeling module. Turn off browse mode or quick nav, Tab to items, Space or Enter to pick up, Tab to move, Space or Enter to drop.
grams Ni2O3⟶⟶⟶grams Nigrams Ni2O3⟶⟶⟶grams Ni
Answer Bank
grams O2O2
moles NiNi
grams NiNi
moles Ni2O3Ni2O3
moles O2O2
grams Ni2O3Ni2O3
Answer:
110.92 g
Explanation:
Amount of Ni2O3 consumed= 55.3/59 =0.94 moles
From the reaction equation;
2 moles of Ni2O3 yields 4 moles of Ni
0.94 moles yields 0.94 moles * 4/2
= 1.88 moles of Ni2O3
Mass of 1.88 moles of Ni2O3 = 1.88 moles of Ni2O3 * 59 gmol-1 = 110.92 g
Is cardboard a solid
Answer:
yes because it has a fixed shape and volume
hope this helps
have a good day :)
Explanation:
I don’t know how to do this, LIKE IT WAS NOT EVEN IN THE VIDEO :/
The formation of soap can be done with the process of saponification in which triglyceraldehyde reacts with 3 molecules of Sodium Hydroxide (NaOH) and produces Glycerol and 3 molecules of Sodium palmitate (Soap).
(Reaction is attached as image)
What is Saponification ?Saponification is a process that involves the conversion of fat, oil, or lipid, into soap and alcohol by the action of aqueous alkali.
Soaps are salts of fatty acids, which in turn are carboxylic acids with long carbon chains.
Hence, The formation of soap can be done with the process of saponification in which triglyceraldehyde reacts with 3 molecules of Sodium Hydroxide (NaOH) and produces Glycerol and 3 molecules of Sodium palmitate (Soap).
Learn more about Saponification here ;
https://brainly.com/question/2263502
#SPJ1
Given the following information: SO2(g) + 12 O2(g) = SO3(g) Kp = 2.5E-2 What is the Kp value for the following reaction: 2 SO2(g) + O2(g) = 2 SO3(g)
Answer:
K = 6.25x10⁻⁴
Explanation:
Based on the reaction:
SO₂ + 1/2 O₂ ⇄ SO₃ Kp = 2.5x10⁻²
We can find the Kp of a similar reaction using Hess's law where the sum of 2 reactions a and b produce a K that is:
K = Ka*Kb
The sum of twice the reaction of the problem:
SO₂ + 1/2 O₂ ⇄ SO₃
+ SO₂ + 1/2 O₂ ⇄ SO₃
2SO₂ + O₂ ⇄ 2SO₃
Where K must be:
K = Kp*Kp = Kp²
K = (2.5x10⁻²)²
K = 6.25x10⁻⁴8. What is the volume of 5.6 moles of carbon dioxide gas at STP?
Answer:
125.5 ×10^-3 m^3= 0.1255 m^3
Explanation:
Volume=5.6mol×22.414dm^3
=125.5dm^3
which statement compares the strengths of electric forces between particles of matter?
A. Hydrogen bonds and metallic bonds are stronger than ionic bonds.
B. Van der Waals forces and hydrogen bonds are stronger than metallic bonds.
C. Ionic bonds and Van der Waals forces are stronger than metallic bonds.
D. Van der Waals forces and hydrogen bonds are weaker than metallic bonds.
Answer: A
Explanation: I quizzed
The student then sets up two more test tubes containing iron nails.
Explain why
test tube 1 does not rust because boiled water has no oxygen and oil stops new oxygen from entering and without oxygen iron cannot rust.
test tube 2 does not rust because the drying agent absorbs all the moisture from air, and moisture is required for iron to rust.
In the absence of oxygen or moisture rusting of the nail can not take place.
There are two very important things that must be present for the process of rusting to take place these are;
Oxygen MoistureIf we can exclude these two, rusting will not take place in the absence of either of them.
Rusting does not occur in tube 1 because the water have been boiled and the oxygen removed then it is stored under oil that prevents corrosion.
In tube 2, there is a drying agent that removes moisture from air hence moisture does not have access to the nail so it does not rust.
Learn more about rusting: https://brainly.com/question/4206267
How many moles of gas are in a 25 L container if the temperature is 289 K and the pressure is 125 atm?
Answer:
1.3 moles
Explanation:
pv = nrt
n = pv/rt
n = (125 * 25) / (8.3144598 * 289)
n = 1.3 moles
The half-cell is a chamber in the voltaic cell where one half-cell is the site of the oxidation reaction and the other half-cell is the site of the reduction reaction.
a. True
b. False
Answer:
True
Explanation:
In a cell reaction, half cell reaction is oxidation. Oxidation means addition of electrons. This addition of electrons takes place at cathode. Therefore, cathode is site of oxidation. However, the other half cell reaction is reduction. In reduction reaction removal of electrons takes place. Reduction takes place at anode of the cell.
Therefore, the given statement is true.
What is the definition of specific heat?
A. The heat needed to raise the temperature of 1 g of a substance
1°C
B. The total amount of energy contained within 1 mole of a
substance
C. The heat required to break the molecular bonds within a
substance
D. The temperature change between the melting and boiling points of
a substance
Answer:
A. The heat needed to raise the temperature of 1 g of a substance 1°C.
Explanation:
how this has helped you
Plzzzzzzzzzzzzzzzz help
Answer:
Your correct.
Explanation:
Answer:
The answer is C.
Explanation:
I just know.
Name the guy thats Speedrunning yt right now
Answer:
Lyric
Explanation:
My best guess
7. Assume that you have collected 867 L of nitrogen gas at STP. What is the mass of the nitrogen gas?
Answer:
1083.6 g
Explanation:
At STP, 1 mol of any given mass will occupy 22.4 L.
With the information above in mind we can calculate how many moles of nitrogen gas (N₂) are there in 867 L:
867 L ÷ 22.4 L/mol = 38.7 molFinally we convert 38.7 moles of N₂ into grams, using its molar mass:
38.7 mol * 28 g/mol = 1083.6 g