What’s the difference between climate change and global warming

Answer:

A parasite.

Explanation:

A virus usually invades cells and replicates.

A bacteria usually just replicates and either is beneficial or can harm.

A fungus usually decomposes or can make you sick.

A parasite usually is parasitism - it invades the organisms and leeches off them for shelter and nutrients and can harm.

Answer:

A parasite.

Explanation:

i got it right

When 3.50 g of Mg(OH)2 is dissolved in 1.5 L of a 0.200 M KOH solution, the concentration of Mg2+ ions can be determined using the solubility product (Ksp) of Mg(OH)2, which is 1.2 x 10^-11.

First, calculate the concentration of OH- ions in the KOH solution:
OH- concentration = 0.200 mol/L

Next, write the solubility product expression for Mg(OH)2:
Ksp = [Mg2+][OH-]^2

Plug in the known values and solve for the Mg2+ concentration:
1.2 x 10^-11 = [Mg2+](0.200)^2,

Now, we can use the Ksp equation to solve for the concentration of Mg2+ ions:

Ksp = [Mg2+][OH-]^2
1.2 x 10^-11 = [Mg2+][0.200]^2
[Mg2+] = 1.2 x 10^-11 / 0.04
[Mg2+] = 3.0 x 10^-10 M
Therefore, the concentration of Mg2+ ions in the solution is 3.0 x 10^-10 M.

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To find the concentration of Mg2+ ions, we first need to write the chemical equation for the dissolution of Mg(OH)2:
Mg(OH)2 (s) ⇌ Mg2+ (aq) + 2OH- (aq)

The solubility product expression for Mg(OH)2 is:
Ksp = [Mg2+][OH-]^2 = 1.2 x 10^-11

We know that 3.50 g of Mg(OH)2 are dissolved in 1.5 L of a 0.200 M solution of KOH.

To determine the concentration of Mg2+ ions, we need to use the stoichiometry of the balanced equation.

First, we need to calculate the number of moles of KOH present in 1.5 L of a 0.200 M solution:
n(KOH) = Molarity x Volume = 0.200 mol/L x 1.5 L = 0.300 mol

Since KOH is a strong base, it will dissociate completely in water to form OH- ions. Therefore, the concentration of OH- ions in the solution will be:
[OH-] = n(OH-) / V = 0.300 mol / 1.5 L = 0.200 M

Now we can use the solubility product expression to find the concentration of Mg2+ ions:

Ksp = [Mg2+][OH-]^2
[Mg2+] = Ksp / [OH-]^2 = (1.2 x 10^-11) / (0.200 M)^2 = 3.0 x 10^-10 M

Therefore, the concentration of Mg2+ ions in the solution is 3.0 x 10^-10 M.

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Answer:

The heat of vaporization is typically larger than the heat of fusion

Next question answer:

The liquid water absorbs heat from the skin surface and is transferred to the air when the water evaporates.

Explanation:

Answer:

First answer

B. The heat of vaporization is typically larger than the heat of fusion

Second answer:

A. The liquid water absorbs heat from the skin surface and is transferred to the air when the water evaporates.

Explanation:

Answer:

\(P_2=1.48atm\)

Explanation:

Hello there!

In this case, according to the given information, it turns out possible for us to infer this problem is about the application of the Gay-Lussac's gas law to relate the initial and final pressure and temperature as shown below:

\(\frac{P_2}{T_2} =\frac{P_1}{T_1\\ }\)

Thus, solving for the final pressure, P2, and using the temperatures in Kelvins, we obtain:

\(P_2 =\frac{P_1T_2}{T_1 }\\\\P_2 =\frac{1atm*403.15K}{273.15K}\\\\P_2=1.48atm\)

Regards!

In order to determine where testing of tornado warning systems would be most effective in the United States, it is important to understand the areas of the country that are most prone to tornadoes.

The Midwest region is known as "Tornado Alley" due to its high frequency of tornadoes, particularly in states such as Oklahoma, Kansas, and Texas. However, the northeast and mid-Atlantic regions also experience tornadoes, although less frequently. The pacific northwest and West regions are not as prone to tornadoes but still experience them on occasion.

Based on this information, it would make sense for the national government to focus testing efforts on the Midwest region, particularly in areas where tornadoes are most frequent. This could help improve warning systems and potentially save lives in areas where tornadoes are a common occurrence. However, it is also important for warning systems to be effective in all regions of the country where tornadoes may occur, so testing in other regions should not be neglected. Ultimately, the goal should be to improve warning systems nationwide in order to better protect people from the dangers of tornadoes.

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In the given reaction Ni2+ is acting as an oxidizing agent so option A is the correct answer.

An oxidizing agent is a species that oxidizes another species by taking electrons from it. In this reaction, Ni2+ is accepting electrons from H2O molecules, resulting in the formation of Ni(H2O)62+ and 6H+ ions. Oxidation reactions are essential in many biological processes, such as respiration, photosynthesis, and the metabolic pathways that generate energy.

Oxidizing agents can also be used in industrial processes, such as in the production of bleach, dyes, and detergents. In this reaction, Ni2+ is oxidized, which means that it is acting as the oxidizing agent.

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Answer:

- breaking it down into sections

-learn the element song

-use colors to learn the element groups

Explanation:

what also may help which is time-consuming is writing it out over and over if not I would prefer to learn the song it may seem childish a little but it will help in the long run.

Answer:

I personally have a method for learning stuff like this.

Try going one at a time, and ever once in awhile. Like memorize the first element, then the one next to it [in whichever order you please]

Ex: memorizing 1-10

1.. 1,2.. 1,2,3.. 1,2,3,4..

And then repeat that row until you can recite it almost without hesitation, then move onto another line.

This works for both placement memorization and element name.

Answer:

-1300

Explanation:

Answer:

-1300

Explanation:

trust

Explanation:

i think the answer might be D

Answer:

1.01x236/1.90

=125.4mL

Answer:

C₂H6

Explanation:

Among the given options, the formula A) C₂H6 represents a hydrocarbon (specifically, ethane). Option A

A hydrocarbon is a compound that consists of only carbon and hydrogen atoms. It is important to identify the formula that represents a hydrocarbon among the given options:

A) C₂H6: This formula represents ethane, which is a hydrocarbon. Ethane consists of two carbon atoms bonded together with single bonds and six hydrogen atoms.

B) C₂H5OH: This formula represents ethanol, which is not a hydrocarbon. Ethanol contains a hydroxyl group (-OH), indicating the presence of oxygen in addition to carbon and hydrogen atoms. It is an alcohol, not a hydrocarbon.

C) C₂H5Cl: This formula represents ethyl chloride, which is not a hydrocarbon. Ethyl chloride contains a chlorine atom (Cl) in addition to carbon and hydrogen atoms. It is a haloalkane, not a hydrocarbon.

D) C₂H6O: This formula represents ethanol, which, as mentioned before, is not a hydrocarbon. Ethanol contains an oxygen atom (O) in addition to carbon and hydrogen atoms. It is an alcohol, not a hydrocarbon.

Among the given options, the formula A) C₂H6 represents a hydrocarbon (specifically, ethane). It consists only of carbon and hydrogen atoms, making it a suitable representation of a hydrocarbon.

In summary, the formula C₂H6 (option A) represents a hydrocarbon, while the other options contain additional elements (oxygen or chlorine) that make them non-hydrocarbon compounds. Option A

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Answer:

In chemistry, neutralization or neutralisation is a chemical reaction in which acid and a base react quantitatively with each other. In a reaction in water, neutralization results in there being no excess of hydrogen or hydroxide ions present in the solution.Neutralization reactions are the reaction between acid and base. The products formed are water and salt. It is called so because the acid and base neutralize each other to form water and salt.Hint: The neutralization reaction is the one in which an acid reacts with an equimolar amount of base to give salt and water. The example could be a reaction between any strong acid and a base. The sodium chloride formed is a result of neutralization reaction.

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The number of protons in an isotope atom does not change but the number of neutrons does. The iron atom has about twenty-eight isotopes. Such as 45Fe, 46Fe, 47Fe, 48Fe, 49Fe, 50Fe, 51Fe, 52Fe, 53Fe, 54Fe, 55Fe, 56Fe, 57Fe, 58Fe, 59Fe, 60Fe, 61Fe, 62Fe, 63Fe, 64Fe, 65Fe, 66Fe, 67Fe, 68Fe, 69Fe, 70Fe, 71Fe and 72Fe.

Among the isotopes, 54Fe (Observationally Stable), 56Fe, 57Fe, and 58Fe are stable and formed naturally. The remaining isotopes of iron are highly unstable and their half-lives are very short.

Isotope Mass number (A) Atomic number (Z) Neutron number = A – Z

45Fe 45.01458 26 19

46Fe 46.00081 26 20

47Fe 46.99289 26 21

48Fe 47.98050 26 22

49Fe 48.97361  26 23

50Fe 49.96299 26 24

51Fe 50.956820 26 25

52Fe 51.948114 26 26

53Fe 52.9453079 26 27

54Fe 53.9396090 26 28

55Fe 54.9382934 26 29

56Fe 55.9349363 26 30

57Fe 56.9353928 26 31

58Fe 57.9332744 26 32

59Fe 58.9348755 26 33

60Fe 59.934072 26 34

61Fe 60.936745 26 35

62Fe 61.936767 26 36

63Fe 62.94037 26 37

64Fe 63.9412 26 38

65Fe 64.94538 26 39

66Fe 65.94678 26 40

67Fe 66.95095 26 41

68Fe 67.95370 26 42

69Fe 68.95878 26 43

70Fe 69.96146 26 44

71Fe 70.96672 26 45

71Fe 71.96962 26 46

Answer:

Protons: 26

Neutrons: 30

Electrons: 24

Explanation:

Answer:

True

Explanation:

1.  the final concentration of NaOH after adding 125 mL of water to 45.3 mL of 0.71 M NaOH solution is approximately 0.189 M.

2.  the final concentration of KOH after adding 550 mL of water to 125 mL of 3.01 M KOH solution is approximately 0.557 M.

1.) If 125 mL of water is added to 45.3 mL of a 0.71 M NaOH solution, the resulting solution will be a diluted NaOH solution. The addition of water will increase the total volume while reducing the concentration of NaOH. To determine the final concentration of NaOH, we need to consider the conservation of moles.

First, let's calculate the moles of NaOH in the initial solution:

moles of NaOH = volume (in L) × concentration (in M)

moles of NaOH = 0.0453 L × 0.71 M = 0.0321433 moles

After adding 125 mL (0.125 L) of water, the total volume of the solution becomes 0.0453 L + 0.125 L = 0.1703 L.

To find the final concentration, we divide the moles of NaOH by the total volume:

final concentration of NaOH = moles of NaOH / total volume

final concentration of NaOH = 0.0321433 moles / 0.1703 L ≈ 0.189 M

Therefore, the final concentration of NaOH after adding 125 mL of water to 45.3 mL of 0.71 M NaOH solution is approximately 0.189 M.

2.) If 550 mL of water is added to 125 mL of a 3.01 M KOH solution, the resulting solution will also be a diluted solution. Again, we will apply the conservation of moles to determine the final concentration of KOH.

First, calculate the moles of KOH in the initial solution:

moles of KOH = volume (in L) × concentration (in M)

moles of KOH = 0.125 L × 3.01 M = 0.37625 moles

After adding 550 mL (0.55 L) of water, the total volume of the solution becomes 0.125 L + 0.55 L = 0.675 L.

To find the final concentration, divide the moles of KOH by the total volume:

final concentration of KOH = moles of KOH / total volume

final concentration of KOH = 0.37625 moles / 0.675 L ≈ 0.557 M

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Answer:

Research Skills enable people to identify a problem, collect informational resources that can help address the problem, evaluate these resources for quality and relevance and come up with an effective solution to the problem.

Explanation:

It is important because it might increase you critical thinking skills and it's much more easy for you to collect data. It also helps you analyze information from different sources off the internet.

Answer:

The 3rd option is correct

Explanation:

The element in group 13 and period 3 is aluminium which has the electron configuration

\(1{s}^{2} 2 {s}^{2} 2 {p}^{6} 3 {s}^{2} 3 {p}^{1} \)

or [Ne] 3s^2 3p^1

If the volume of solution is determined by using a graduated cylinder, then the mass of solution (instead of measuring it directly on the balance) will be determine by knowing the density of solution.

Graduated cylinders come in a variety of sizes or volumes and, like beakers, measure volume by adding liquid to the cylinder and comparing the liquid level to a graduated scale. When using a graduated cylinder, it is important to read the measurement at the bottom of the meniscus, the curve formed by the water in the cylinder. After measuring the volume of a NaOH or HCl solution, you need to know the density of the solution to calculate the mass of the solution without using a balance. As you know, the density of a solution is determined by the mass per unit volume of the solution. Density is therefore an essential piece of information needed to calculate the mass of a solution.

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While acquired immunity is a particular, adaptable defense mechanism that evolves over time and possesses memory, innate immunity is the body's natural, non-specific defense system that offers immediate protection.

Thus, the initial line of defense against infections is innate immunity, which is present from birth. It contains chemical barriers like antimicrobial proteins and enzymes, together with physical barriers like the skin and mucous membranes, to give instant, all-purpose protection.

As a result of repeated exposure to particular pathogens, acquired immunity, often referred to as adaptive immunity, gradually develops. It is distinguished by its memory and distinctiveness. When lymphocytes (B cells and T cells) are activated, they either create antibodies or cell-mediated reactions, depending on the situation.

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Answer:

C

Explanation:

For electromagnetic waves frequency X wavelength = speed of light

                                                f * 2.2 x 10^-11  = 3 x 10^8  m/s

                                         f = 3 x 10^8 / 2.2 x 10^-11

                                            = 1.36 x 10 ^19

                                             = 1.4 x 10^19   with two significant digits

Answer: it's not C, it is A.

Answer:

B

Explanation:

Condensation happens when there is a drop in temperature. As the heat decreases, the speed that molecules move also decreases. Furthermore, as a gas turns into a liquid, the molecules become more packed together, making the volume decrease, and the shape to become more defined.

The classification of the given compounds is as follows:

(a) lactose (C₁₂​H₂₂​O₁₁​) - non-electrolytes

(b) lactic acid (HC₃​H₅​O₃​) - weak electrolytes

(c) dimethylamine [(CH₃​)₂​NH] - weak electrolyte

(d) barium hydroxide Ba(OH)₂ - strong electrolytes

Electrolytes are substances that when in the molten or solution state conduct electricity and are decomposed by the direct current passing through them.

Electrolytes dissociate into the component ions when they are dissolved in water or in molten form. Some examples of electrolytes are acids and bases.

Strong electrolytes dissociate completely into one while weak electrolytes dissociate partially.

Non-electrolytes do not dissociate into ions in solution but remain as molecules. Some example of non-electrolytes is organic solvents.

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Answer:

A polar bond is one where the charge distribution between the two atoms in the bond is unequal. A polar molecule is one where the charge distribution around the molecule is not symmetric. It results from having polar bonds and also a molecular structure where the bond polarities do not cancel.

Explanation:

(a) BaSO4 is insoluble and will precipitate from solution. (b) BaCl2(aq) + K2SO4(aq) → BaSO4(s) + 2 KCl(aq. The balanced chemical equation for the reaction is : BaCl2(aq) + K2SO4(aq) → BaSO4(s) + 2 KCl(aq)

The chemical reaction between BaCl2 and K2SO4 is a double displacement reaction in which barium sulfate (BaSO4) is produced as a precipitate. The balanced chemical equation for the reaction is:BaCl2(aq) + K2SO4(aq) → BaSO4(s) + 2 KCl(aq). Barium sulfate is formed as a result of this chemical equation where both the reactants were in aqueous state.

Barium sulfate (BaSO4) is insoluble in water, and it will form a white precipitate in the reaction mixture. The precipitate can be filtered out from the reaction mixture and dried to obtain solid BaSO4. The reaction is driven by the formation of a more stable compound (BaSO4) that precipitates out of solution as a solid.

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Answer:

B: They are resources that are in abundant supply and can replenish themselves quickly.

Explanation:

A renewable resource is one that can be used repeatedly and does not run out because it is naturally replaced. Examples of renewable resources include solar, wind, hydro, geothermal, and biomass energy.

Answer:

Not balanced

Explanation:

You have one sulfer and 6 oxygen on the left

You have one sulfer and 3 oxygen on the right

In order to balance it, you would need 2 sulfer and 6 oxygen on each side

The equation for that is:

2S + 3O2 → 2SO3

Answer:

High temperatures reduced the growth of tubers more than of shoots. Photosynthetic rates were unaffected or increased slightly at the higher temperature. Heat stress increased the accumulation of foliar sucrose and decreased starch accumulation in mature leaves but did not affect glucose.

Explanation:

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The solutions which can be separated  using distillation are that of alcohol, salt and sugar with water.

It is defined as a process by which components are separated from a mixture which is liquid  by selective boiling and condensation. Dry distillation is a process of heating solids to produce products in gaseous state.

Distillation results in complete  separation of components  or may be sometimes partial.Due to partial separation,concentration of selected components increases in the mixture. It exploits  differences in  relative volatility  of components of a mixture.

It has many applications like distillation of fermented products which produces distilled beverages , in desalination and in petroleum and oil industry.

It is mainly conversion of liquid into vapor state ,which is subsequently converted back to liquid . It is used to separate volatile liquid from solids and also volatile liquids and non-volatile liquid .

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