HELP ASAP PLEASE

The primary cause of water pollution is:

In which mixture of 0.10 mol NaOH + 0.10 mol [tex]H_2SO_4[/tex], NaOH is the limiting reactant. Hence option B is correct.

The limiting reagent is the reactant that is completely used up in a reaction, and thus determines when the reaction stops.

Reaction

[tex]2NaOH + H_2SO_4[/tex] → [tex]Na_2SO_4 + 2H_2O[/tex]

For one mole of [tex]H_2SO_4[/tex] we need two moles of NaOH.

Option A: equivalent quantities

Option B: NaOH is limiting rectant.

[tex]NaOH + HNO_3[/tex] → [tex]NaNO_3+ H_2O[/tex]

For one mole of [tex]HNO_3[/tex] we need one mole of NaOH.

Option C: NaOH in excess

Option D: equivalent quantities

In which mixture of 0.10 mol NaOH + 0.10 mol [tex]H_2SO_4[/tex], NaOH is the limiting reactant. Hence option B is correct.

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Answer:

it would slowly die off and the kinda of animal will not be there because it cant live there because they cant adapt to stay alive

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The molar enthalpy of combustion in kj/mol of magnesium is 620 kj/mol, Option D is the correct answer.

The energy released when a fuel is oxidized by an oxidizing agent is called enthalpy of Combustion.

It is given that

a 1.0 g sample of magnesium is burned to form MgO. in doing so, 25.5 kj of energy are released.

Molecular weight of Magnesium = 24.35g

24.35 g makes 1 mole of Mg

1g = 1/24.35

For 0.04 moles  25.5 kJ is released

for 1 mole 25.5 *1/.04

= 620 kj/mol

Therefore the molar enthalpy of combustion in kj/mol of magnesium is 620 kj/mol.

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(1) Fewer microorganisms will grow on the surface of the lake if iron compounds are added to a lake with an overabundance of nutrients. Hence, option 1 is correct.

(2) Fracking means using water and chemicals at high pressure to open up fissures to access oil and gas resources. Hence, option 2 is correct.

An organism that can be seen only through a microscope.

Iron is a natural capping agent which can enhance sediment P binding capacity, thus reducing P availability and shifting a lake from an algal to a macrophyte dominated state. Iron could, however, also impose toxic effects on the biota.

Fracking is the injection of a fluid at high pressure into an underground rock formation to open fissures and allow trapped gas or crude oil to flow through a pipe to a wellhead at the surface.

This technique is used in natural gas and petroleum production.

1) Fewer microorganisms will grow on the surface of the lake if iron compounds are added to a lake with an overabundance of nutrients. Hence, option 1 is correct.

(2) Fracking means using water and chemicals at high pressure to open up fissures to access oil and gas resources. Hence, option 2 is correct

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Answer:

6.6 moles of NH3

Explanation:

3.3 mol N2 * (2 mol NH3/ 1 mol N2) = 6.6 mol NH3

A person who eats three servings of the cereal without milk will consume about 117 percent of calories.

This is defined as  a unit of energy and is commonly used in the body system.

One serving of cereal without milk will contain 39 percent of calories while three servings will be 117 percent.

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Substance x is known to exist at 1 atm in the solid, liquid, or vapor phase, depending on the temperature, is mathematically given as

Q=800J.mol^{-1}

Generally, the equation for heat absorbed is mathematically given as

Q= Heat capacity of solid *T

In conclusion,

Q= (40)(293.15-273.15)

Q=800J.mol^{-1}

In conclusion, Because the enthalpy of fusion is 9 KJmol-1 and we are only providing 6 KJmol-1 of heat, the melting process will not be complete. the graph is attached.

CQ

Substance x is known to exist at 1 atm in the solid, liquid, or vapor phase, depending on the temperature. additionally, the values of these other properties of x have been determined. show graph

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The mass of water required to raise 22000 joules of heat from a temperature of 34°C to 100°C is 79.37g.

The mass of a substance can be calculated by using the following formula:

Q = m × c × ∆T

Where;

22000 = m × 4.2 × (100 - 34)

22000 = 277.2m

m = 22000/277.2

m = 79.37g

Therefore, the mass of water required to raise 22000 joules of heat from a temperature of 34°C to 100°C is 79.37g.

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The relationship is predation. The ladybugs are the predators and the aphids are the prey.

Predation is an interaction in which one organism, the predator, eats all or part of the body of another organism, the prey.

As per the information in the question, Ladybug beetles chase, capture, and eat smaller insects called aphids.This means that aphids act as food sources for Ladybug beetles.

Predation can be described as a biological interaction between two organisms belonging to two different species where one organism ( called predator) captures and consumes/eats another organism ( that is called prey).

Here, Ladybug beetles ( that capture and eat small insects) are predators and the insects are prey.

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Answer:

No son los angeles pero en realidad....

Explanation:

¿Qué provoca la acidificación de los océanos?

Cuando el CO2 es absorbido por el océano, se producen reacciones químicas. En particular, se forma ácido carbónico y se liberan iones de hidrógeno; como resultado, el pH de las aguas superficiales del océano disminuye, haciéndolas más ácidas.

The position of equilibrium lies far to the right, with products being favoured. Hence, option A is correct.

Chemical equilibrium is a condition in the course of a reversible chemical reaction in which no net change in the amounts of reactants and products occurs.

A very high value of K indicates that at equilibrium most of the reactants are converted into products.

The equilibrium constant K is the ratio of the concentrations of products to the concentrations of reactants raised to appropriate stoichiometric coefficients.

When the value of the equilibrium constant is very high, the concentration of products is much higher than the concentration of reactants.

This means that most of the reactants are converted into products and the position of equilibrium lies far to the right, with products being favoured.

Hence, option A is correct.

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Answer:

[tex]gram[/tex]

Explanation:

ueuhe

When a racemic mixture reacts with a single enantiomer of another compound, then a pair of diastereomers are formed.

A racemic mixture is an equimolar composition of enantiomers are optically inert. On the right side and the left side of the enantiomer in a chiral molecule, they contain an equal amount.

Now, in an organic reaction:

When a racemic mixture reacts with a single enantiomer of another compound, two compounds are formed and their formation possesses the different configurations on each side. Hence, a pair of diastereomers are formed.

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Answer:

bombarding it with an energetic particle

Explanation:  nuclear reaction, a change in the identity or characteristics of an atomic nucleus, induced by bombarding it with an energetic particle. The bombarding particle may be an alpha particle, a gamma-ray photon, a neutron, a proton, or a heavy-ion.

Answer: 16.7 %

Explanation:

[tex]\frac{30.0}{150.0+30.0}=\boxed{16.7\%}[/tex]

Explanation:Suntan lotion basically evaporates. Sun tan lotion contains a chemical called acetone. So when the sun tan lotion is appilied, her hands feel cool, and as when it evporates in air it becomes warm again.    

Additional information: Acetone is also found in Nailpolish remover, medicinal balms, sanitzers etc.

Answer:

49.54%

Explanation:

Given parameters:

Number of organisms in original habitat = 4695

Number of organism in new habitat = 2326

Solution:

To find the percentage of the organisms in the new habitat that has migrated to the new habitat, we use the expression below:

% of the population in the new habitat =  x 100

% of the population in the new habitat =  x 100 = 49.54%

hlo guys you are so bads i

The complete statement is "The hybridization of one s and one p orbital will result in the formation of two sp hybrid orbitals. This will leave two unhybridized p orbital(s), which is/are at right angles to the hybrid orbitals. The formation of a group of sp2 hybrid orbitals leaves one unhybridized p orbital(s). " Option B. This is further explained below.

Generally, hybridization is simply defined as hybridization describes the offspring produced when one species of plant or animal mates with another.

In conclusion, After a cluster of sp2 hybrid orbitals forms, there is still one p orbital that is not hybridized (s).

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Answer:

The obtained result indicates that the hydrogen atom is not equal on both sides. Thus the reaction is not balanced.

Explanation:

Answer:

the ability to do work.

Explanation:

The total mass is 10.57+6.96=17.53 g.

So, the percent by mass of magnesium is (10.57)/(17.53) * 100 = 60.3%

The percent by mass of oxygen is (6.96)/(17.53) * 100 = 39.7%

Answer:

Hg gets reduced

(Look at the equation; notice how Hg loses O while Zn gains it)

Answer:

a. Manganese (IV) sulfide

b. Perchloric acid

c. Ammonium acetate

d. Lithium nitride

e. Sodium peroxide

Explanation:

hope this helps!! p.s. i really need brainliest :)

Answer:

Nuclear fission

Explanation:

Because the little particles are being spread out and the two elements are broken apart

Answer:

Explanation:

Remark

CH2 provides the basic structure of the hydrocarbon. It will be multiplied by some factor determined by the number of grams / mol. I will use rounded numbers because all periodic tables are slightly different.

Theoretical mass of CH2

1 C = 1 * 12 = 12

2 H= 2 * 1 =  2

Mass CH2 = 14

The multiplier for CH2

56.108 rounded = 56

Multiplier = molar mass (rounded)/Mass CH2

Multiplier = 56/14 = 4

Chemical

(CH2)_4 = C4H8

Answer: C4H8

Answer:

magnets

Explanation:

Pseudoscience is "a collection of beliefs or practices mistakenly regarded as being based on scientific method".. keyword: based; it is not science. It is merely a belief. Magnets are not scientifically confirmed as useful in arthritis treatment. There is only a belief that magnets can cure arthritis. So, the answer is magnets

Hope this helps.

- profparis

Answer:

Answer:

7.00335g

Explanation:

[tex]n=\frac{V}{V_m} \\n = \frac{11.2}{22.4} \\n= 0.5 mol[/tex]

[tex]n=\frac{m}{M} \\m=nM\\m=(0.5)(14.0067)\\m=7.00335g[/tex]

Answer:

A. Solubility

Explanation:

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