Answer:
How do you think plants would grow in space? Which tropism(s) would be affected and why?
In the absence of gravity, plants use other environmental factors, such as light, to orient and guide growth. A bank of light emitting diodes (LEDs) above the plants produces a spectrum of light suited for the plants' growth. Enjoy don't fail :)
Explanation:
In an ecosystem like space where there is no gravity, geotropism would be affected .
What is an ecosystem?Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.
Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.
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What dissolved solid has the highest concentration in the ocean? sodium chloride
sulfur
calcium
magnesium
Answer:
chloride and sodium.
Explanation:
These two make up over 90% of all dissolved ions in seawater.
mark me brainliest
Answer:
sodium chloride
Explanation:
Water is able to act as an acid in some reactions.
T/F
Answer:
True.
Explanation:
Water can act as a base or an acid. This means it is amphiprotic.
A chemist wants to prepare a stock solution of H2SO4 so the samples of 20ml will produce a solution with concentration of 0.5M when added to 100ml of water. What should the molarity if the stock solution be?
Answer:
If you want the first option you need 2.5M.
If you want the second, you will end up with 120ml so your starting solution is:
0.5x (120/20) = 3.0M
This assumes that there’s no loss of volume on mixing. To remove that uncertainty, start with the 20ml of acid and add water, mixing, till you get the right volume.
MnO4- is a tetrahedral complex that is intensely purple. How many d orbital electrons does this complex have
A complex is a compound that is composed of a central metal atom/ion and then ligands. MnO4- is a d^0 specie hence it has no d electron.
What is a complex?A complex is a compound that is composed of a central metal atom/ion and then ligands. These ligands may lead to the color of the complex. However, the color of complexes more commonly result from the d-orbital transition in the metal atom/ion.
Now we know that the neutral electron configuration of Mn is [Ar]. 3d5. 4s2. It then follows that MnO4- is a d^0 specie hence it has no d electron.
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A 2.3 L gas bubble at STP is heated to 984 K, and the pressure increases to 1520 mmHg. What is the new volume?
The new volume of the gas bubble as its temperature is heated to the given value and pressure increased is 4.14L.
Combined gas law
Combined gas law put together both Boyle's Law, Charles's Law, and Gay-Lussac's Law. It states that "the ratio of the product of volume and pressure and the absolute temperature of a gas is equal to a constant.
It is expressed as;
P₁V₁/T₁ = P₂V₂/T₂
Given the data in the question;
Initial volume of the gas V₁ = 2.3Lat STP
Initial pressure P₁ = 1.0atmInitial temperature T₁ = 273.15KFinal temperature T₂ = 984KFinal pressure P₂ = 1520mmHg = 2.0atmFinal volume V₂ = ?To calculate the new volume the gas, we subtsitute our given values into the expression above.
P₁V₁/T₁ = P₂V₂/T₂
P₁V₁T₂ = P₂V₂T₁
V₂ = P₁V₁T₂ / P₂T₁
V₂ = ( 1.0atm × 2.3L × 984K ) / ( 2.0atm × 273.15K )
V₂ = 2263.2LatmK / 546.3atmK
V₂ = 4.14L
Therefore, the new volume of the gas bubble as its temperature is heated to the given value and pressure increased is 4.14L.
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2As + 6NaOH 2 Na3ASO3 + 3 H2
If you start the above reaction with 3.25 moles of NaOH, how many moles of Na AsOs will
be produced?
Answer: 1.08 moles
Explanation:
For every 6 moles of sodium hydroxide consumed, 2 moles of sodium arsenite are produced.
This means that if 3.25 moles of sodium hydroxide are produced, we can set up the proportion:
3.25/6 = x/2, where x is the number of moles of sodium arsenite produced.
It follows that x = 1.08 moles.
can I get some help please
Answer: hi! I think it would be A: Carbohydrates, fats, and proteins, but I’m not 100% sure!! If not I’m so sorry!
Explanation: btw I have a question (if you would have time to pls helps me tyy!!)
How many grams of NH4Cl will dissolve in 50 grams of 90°C water?
In 50 grams of water at 90°C, it is expected 35 grams will dissolve considering the solublity is 70g/ 100 grams of water.
How are solubility and temperature related?Solubility increases when temperature increases, which means more grams of a substance can be disolved if temperature is higher.
How to determine solubility?The best is through a solubility curve chart as the one below.
What is the solubility in this case?As observe in the graph the solubility at 90°C using 100 grams of water is 70g/ 100 grams of water; this implies in 50 grams the solubility is 30 grams.
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If you had a 4.0M and a 0.4M solution of nitric acid, which would have a lower pH? Why?
Answer:
the second one would have lower
Explanation:
because of the amount
pH is the measure of the negative log of the hydrogen ion concentration. The 0.4 M nitric acid will have lower pH.
What is pH?pH is the concentration of the hydronium or the hydrogen ion in the water that gives the account to the basic and acidic nature of the substance.
pH is dependent on the concentration of the substance as the increased concentration increases the pH while the lower concentration lowers the pH.
Therefore, 0.4 M will have a lower concentration.
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What is the predicted product for the reaction shown?.
Hello, Miko here to help!
Answer: Often times it is possible due to previous data. Trends appear and you can make deductions from such trends. Reactions may not happen at all. There may be deviations from the trends as well. The deviations may be for unknown reasons or there may be unproven theories that are included in textbooks. Inorganic chemistry reactions are not as clear-cut as organic chemistry reactions. You don't have to memorize all the reactions. Know the trends, conduct the experiment, and if your prediction fails, try to think hard about the conditions in which the experiment took place. Sometimes the explanation may lay in the container that you used for the reaction, or it may be stoichiometry.
As in all sciences, you need experiments.
Explanation: I hope this helps have a great day!
What is the name of this molecule?
H
O A. Propene
• B. Butene
C. Butane
D. Propane
Answer:
it D. the answer is propane. hope this helps you
One important drawback of the use of hcfcs as a replacement for cfcs is that hcfcs.
One important drawback of the use of hcfcs as a replacement for cfcs is that hcfcs are more potent greenhouse gases.
What is hcfcs?HCFCs is an acronym for hydrochlorofluorocarbons (HCFCs).
Thye are fully or partly halogenated hydrocarbons that contain carbon (C), hydrogen (H), chlorine (Cl), derived from alkane family.
What is cfcs?CFCs is an acronym for Chlorofluorocarbons (CFCs), derived from alkane family like hydrochlorofluorocarbons.
Disadvantage of hcfcs over cfcsOne important drawback of the use of hcfcs as a replacement for cfcs is that hcfcs are more potent greenhouse gases.
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Are all the atoms in the same plane for cyclohexanone.
Answer:
the atoms in cyclohexanone are not in the same
Explanation:
but they are in a benzene ring! Cyclohexane has only sigma bonded carbons with bonds that stick out of the plane
Which metal will produce h2 gas when added to a solution containing a strong acid?.
The metals will produces hydrogen gas when added to solution containing a strong acid are aluminum, magnesium and zinc, etc.
What is single displacement reaction?Those reactions in which displacement of only one element will done by another element for the formation of product takes place will known as single displacement reaction.
Metals have the propeties to react with acids and will produce hydrogen gas, so those metals which are more reactive than hydrogen atoms and are present above the hydrogen atom in the electrochemical series will displace hydrogen from acids and produces hydrogen gas. Some of them are aluminum, magnesium, zinc, etc.
Hence metals are aluminum, magnesium and zinc, etc are the metals.
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Hello people ~
When acetamide is converted to methylamine, what is the name of the reaction?
a) Friedel-Craft’s reaction
b) Hofmann reaction
c) Hofmann bromamide reaction
d) Hinsberg reaction
Answer:
Hofamann Bromamide reaction
Explanation:
In Hofmann Bromamide reaction and tertiary or secondary amide is treated with liquid bromine in an aqueous solution of sodium hydroxide, It turns the amide to form primary amideOption C
Answer:
c) Hofmann Bromamide reaction
Explanation:
The reaction in which Acetamide is converted to Methylamine is known as Hofmann Bromamide reaction. Thus, option (c) is the correct answer.
Ughhh ughh ughhhh
helppp
Answer:
Explanation:
one is True, an electro magnet is only magnetic because of current producing the magnetic field.
How many electrons are lost or gained in forming each ion? a. Ba2+ b. As3- c. Cu2+
Answer:
See below
Explanation:
Part a)
Ba⁺²
Since it has a positive charge, this means it has lost electrons and that too 2 electrons. It has lost 2 electrons.
Part b)
As⁻³
Since it has a negative charge, it has gained electrons and that too 3 electrons. It has gained 3 electrons.
Part c)
Cu⁺²
It has a positive charge, so it has lost electrons and that too 2 electrons. It has lost 2 electrons.
[tex]\rule[225]{225}{2}[/tex]
Give an example of a polymer formed by addition polymerization.
Answer:
During the addition polymerization, all monomers are consumed and no byproducts are formed. Common examples of addition polymerization are polyethylene, polyvinyl chloride (PVC), acrylics, polystyrene, polytetrafluoroethylene, and polyoxymethylene (acetal).
What is meant by addition polymer?
In polymer chemistry, an addition polymer is a polymer that forms by simple linking of monomers without the co-generation of other products. Addition polymerization differs from condensation polymerization, which does co-generate a product, usually water.
Explanation:
Captures sunlight to make food for the cell through photosynthesis.
Answer:
Chloroplasts
Explanation:
Chloroplasts purpose are to take the energy from the Sun's light and turn it into food for the plant.
When they survive,
organisms are more likely
to be able to reproduce
and pass on their genetic
information to their
Given the reaction:
4 HCl(aq) + MnO2(s) MnCl2(aq) + 2 H2O() + Cl2(g)
The manganese is
A) reduced and its oxidation number changes from +4 to +2
B) reduced and its oxidation number changes from +2 to +4
C) oxidized and its oxidation number changes from +4 to +2
D) oxidized and its oxidation number changes from +2 to +4
Redox is the oxidation-reduction reaction that includes the gain and loss of electrons. The oxidation of the manganese changes from +4 to +2 and gets reduced.
What are oxidation and reduction?In a redox reaction, the electrons are gained and lost by the chemical species. In oxidation, the electrons are lost by the species to another, while in reduction the electrons are gained by the species.
When the electrons are lost by the species their oxidation number gets increased, whereas when the species gains electrons their oxidation state decreases.
The oxidation number of manganese oxide and manganese(II) chloride is calculated as:
[tex]\begin{aligned}\rm Mn^{x}O_{2}^{2-}: \rm x -4 &= 0\\\\&= +4\end{aligned}[/tex]
and,
[tex]\begin{aligned}\rm Mn^{x}Cl^{2-}: x -2 &= 0\\\\&= +2\end{aligned}[/tex]
Therefore, the manganese is option A. reduced, and the oxidation number changes from +4 to +2.
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Calcium hydroxide: Group of answer choices cannot be placed under direct composite resins because it will inhibit polymerization. stimulates the production of reparative dentin. functions as a thick base to support extensive restorations. consists of a resin in an organic solvent.
Answer:
B. Stimulates the production of the reparative dentin.
Explanation:
_____ are considered dietary proteins.
A. apples
B. oils
C. eggs
D. potatoes
Answer:
Eggs
Explanation:
Apple = fruit
Oils = fat
Potatoes = Carbs
And eggs are the only proteins
albr3 + cl = alci3 + br2. what type of reaction is that? and what are the coefficient numbers?
A student looking for an element that will bond with sodium (Na) knows that table salt is a compound of sodium and chlorine (Cl). Based on this information, which of the following elements would most likely bond with sodium?
Based on the information on the student looking for an element that will bond with sodium, the element that will likely bond with sodium is bromine.
How do elements bond?Elements bond with one another in a chemical manner to form compounds, which cannot be broken down into their constituent elements without being destroyed.
According to this question, a student is looking for an element that will bond with sodium (Na) with the knowledge that table salt is a compound of sodium and chlorine (Cl).
This suggests that an element that will likely bond with sodium must be in the same group with chlorine because they will possess the same chemical properties.
Therefore, based on this information, the element that will likely bond with sodium is bromine.
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Most individuals have been vaccinated for measles. Those who have not been vaccinated are typically protected by
herd immunity.
genetic variation.
artificial passive immunity.
natural active immunity.
Answer:
artificial passive immunity
Chlorine reacts with hydrogen to form hydrogen chloride. As chlorine is more electronegative, it attracts shared paired of electrons towards itself. What type of compound is HCL?
Answer:
hcl is a covalent compound
Explanation:
nepheline a nonpartisan that survives at room temperature can be used to protect wool clothing from being eaten by moths.
a) Explain in terms of intermolecular forces why Nephilim sublimes
b) Explain why Nathaline is not expected to dissolve in water
c) The empirical formula of naphthalene is C5H4 and the molecular mass of Nephilim is 128 g flash mole What is the molecular formula for Naphthalene
#1
Nephilim has very weak intermolecular forcesSo on heating it directly turns gas from solid.#2
Nathaline is non polar Water is polarSo it is not expected to dissolve in water.
#3
Empirical formula mass
5(12)+4=60+4=64gn:-
Molecular formula mass/Empirical formula mass128/642Molecular formula
n×Empirical formula2(C_5H_4)C_10H_8What's the relationship between trait, gene, protein, and phenotype?
11. (15 pts) Predict the products of the following DISPLACEMENT REACTIONS. Balance the
equation for any reactions that occur and include states of matter. If no precipitation reaction
occurs, write "No reaction." Write the complete reaction in the space below.
a. (6 pts) ZnSO, (aq) + BaCh (aq) ›
b. (9 pts) Write the balanced equation for the reaction between aqueous solutions of lithium
carbonate and cobalt(Il) acetate.
The displacement reactions produces insoluble precipitates of barium sulfate and cobalt carbonate retrospectively.
What are displacement reactions?Displacement reactions are reactions in which an atom of an element or radical removes and replaces another arim or radical in a substance.
The displacement reaction between zinc sulfate and barium chloride is given below:
[tex]ZnSO_4(aq) + BaCl_2(aq) \rightarrow ZnCl_2(aq) + BaSO_4(s) \\ [/tex]
The balanced equation for the displacement reaction between aqueous solutions of lithium carbonate and cobalt(Il) acetate is given below as follows:
[tex]Li_2CO_3(aq) + Co(C_2H_3O_2)_2(aq) \rightarrow 2C_2H_3LiO_2(aq) + CoCO_3(s) \\ [/tex]
Therefore, the displacement reactions produces insoluble precipitates of barium sulfate and cobalt carbonate retrospectively.
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