who do human activities cause droughts and floods?

Answer:

The ice pack is absorbing heat from your wrist.

Explanation:

The volume of 5.5 grams of carbon dioxide (CO2) at room temperature and pressure is approximately 2.42 dm³.

To calculate the volume of carbon dioxide (CO2) at room temperature and pressure (r.t.p), we can use the ideal gas law equation:

PV = nRT

Where:

P is the pressure

V is the volume

n is the number of moles

R is the ideal gas constant

T is the temperature

At r.t.p, the pressure is typically considered to be 1 atmosphere (atm) or 101.325 kilopascals (kPa). The temperature is approximately 298 Kelvin (K), which is equivalent to 25 degrees Celsius (°C).

First, we need to calculate the number of moles of carbon dioxide (CO2) using its mass and molar mass.

The molar mass of CO2 is calculated by adding the atomic masses of carbon (C) and two oxygen (O) atoms:

Molar mass of CO2 = (12.01 g/mol) + 2*(16.00 g/mol) = 44.01 g/mol

Now, we can calculate the number of moles using the given mass of 5.5 grams:

n = mass / molar mass = 5.5 g / 44.01 g/mol ≈ 0.125 mol

Next, we can rearrange the ideal gas law equation to solve for volume (V):

V = (nRT) / P

Substituting the known values into the equation:

V = (0.125 mol * 0.0821 L·atm/mol·K * 298 K) / 1 atm

V ≈ 2.42 dm³

for more such questions on volume

https://brainly.com/question/29796637

#SPJ11

Answer:

it increases and is perpendicular to the motion of the wave.

I don't have any favourite compound but yes there is a photo that i like which is my desktop wallpaper.

There are so many diagrams and Compounds which are quite interesting to understand and focus why there are placed here.

Answer:

4-Phenyl-1H-1,2,3-triazole which has a chemical formula of C8H7N3

Explanation:

I like this molecule because it is an easily synthesized molecule that can be used to add groups to the triazole.  When using a base the N-H is deprotonated making it act like a nucleophile.

Answer:

25400 liters

Explanation:

1 cubic meter is 1000 liters

25.4 cubic meter is 25.4×1000 liters= 25400

Answer:

I don't speak espanol

Explanation:

hdhdbdbdbsnsnsndndndnd

FeCl₃ has a van't Hoff factor of 3.400. -3.858ºC is the freezing point (in °C) of an aqueous solution made with 0.4100 m FeCl₃.

A liquid's freezing point is the temperature at which it turns into a solid. Similar to the melting point, the freezing point often rises with increasing pressure. In the case of combinations and for some organic substances, such as lipids, the freezing point usually below the melting point.

The first solid that forms when a combination freezes often differs in composition from the liquid, and the development of the solid alters the constitution of the remaining water, typically lowering the freezing point gradually.

∆T = i×m×Kf

i = van't Hoff factor = 3.400

m = molality = 0.4100 m

Kf = freezing constant = 1.860º/m

∆T = (3.400)(0.4100)(1.860)

∆T = 3.858º

Freezing point = 0º - 3.858º = -3.858ºC

Therefore, -3.858ºC is the freezing point.

To learn more about freezing point, here:

brainly.com/question/30168966

#SPJ1

Answer:

lungs

Explanation:

Answer: 4,,3,2,1,4,1,3,2,1,4,2,3,1,4

Explanation:

Answer:

D. Atoms

Explanation:

a mole is defined using particles, which may be atoms, molecules, ions, or electrons.

Answer:

saturated refers to a point of maximum concentration, in which no more solute may be dissolved in a solvent.

Acid:sulfuric,nitric

Basic salt:Calcium carbonate (CaCO3)

Sodium acetate (NaOOCCH3)

Explanation:

mark me brainliest

The excess reactant remains after the reaction is over while the limiting reactant does not remain after the reaction is over.

The question is incomplete but I will try to help you as much as possible. The limiting reactant is the reactant that is used up in the reaction. It does not remain at the end of the reaction.

The reactant in excess is not used up in the reaction hence it remains after the reaction must have been completed.

Learn more about the limiting reactant: https://brainly.com/question/14225536

Answer:

"Oxygen" for the first answer

"Not" for the second answer

Explanation:

Answer:

\(4.92x10^{23}molecules H_2O\)

Explanation:

Hello,

In this case, since the chromium(III) oxalate trihydrate is Cr₂(C₂O₄)₃ ·3H₂O whose molar mass is 422 g/mol and one mole of chromium(III) oxalate trihydrate contains three moles of water, by also considering that one mole of substance contains the Avogadro´s number in particles, the number of water molecules turns out:

\(=115gCr_2(C_2O_4)_3\ 3H_2O*\frac{1molCr_2(C_2O_4)_3\ 3H_2O}{422gCr_2(C_2O_4)_3\ 3H_2O}*\frac{3molH_2O}{1molCr_2(C_2O_4)_3\ 3H_2O} *\frac{6.022x10^{23}molecules H_2O}{1molH_2O} \\\\=4.92x10^{23}molecules H_2O\)

Best regards.

The pressure of the environment affects the liquid's boiling point. The boiling point of the liquid is higher when it is under high pressure than when it is under normal atmospheric pressure. For a given pressure, various liquids have different boiling points.

The temperature at which a liquid's vapour pressure equals the surrounding atmosphere is known as the boiling point of the liquid. This temperature causes the liquid to become a vapour.

The temperature of the liquid, the pressure of the atmosphere, and the pressure of the vapour all affect its boiling point.

We know that change in temperature of a system is given by the following formula:

Initial boiling point (T₁) = 80.1 °C

ΔT = T₂ - T₁

2.25 = T₂ - 80.1

T₂ = 82.35  °C

To know more about boiling point, visit;

https://brainly.com/question/28986258

#SPJ1

Answer:

82.35

Explanation:

acellus

The general reaction type is characterized by elemental oxygen one of the reactions is the Combustion reaction.

A combustion reaction is a reaction in which a substance reacts with oxygen gas and releases energy in the form of light and heat. Combustion reactions must include O2 as a reactant. The reaction of oxygen with another element commonly forms binary compounds known as oxides.

A chemical reaction in which one or more electrons are lost. Oxidation State Number A number assigned to an atom that indicates the degree of oxidation that is how many electrons it has gained or lost. reduction A type of chemical reaction that yields one or more electrons. The four main reaction types are direct binding analytical reactions single displacement, and double displacement.

Learn more about General reaction here:-https://brainly.com/question/12450341

#SPJ1

Answer:

D) Repeating units.

Explanation:

Polymers are large macromolecules which are made up of many repeating structural units called monomers :)

The empirical formula : C₂Cl₇

The molecular formula : C₁₀Cl₃₅

Given

8.81 g Carbon

91.2 g Chlorine

Molar Mass: 1362.5 g/mol

Required

The empirical formula and molecular formula

Solution

Mol ratio :

C = 8.81 g : 12.011 g/mol =0.733

Cl = 91.2 g : 35,453 g/mol = 2..572

Divide by 0.733

C : Cl = 1 : 3.5 = 2 : 7

The empirical formula : C₂Cl₇

(The empirical formula)n = the molecular formula

(C₂Cl₇)n = 1362.5

(2x12.011+7x35.453)n=1362.5

(272.193)n=1362.5

n = 5

Este problema indica el volumen deseado de una solución (250 cm³) cuya concentration es de 5 g/L y pregunta la cantidad de sal que se debe disolver.

De este modo, dado que el volumen y la concentración están en distintas unidades, debemos convertir una de ellas a la de la otra, en este caso los cm³ a L como se muestra a continuación:

\(250cm^3*\frac{1L}{1000cm^3}= 0.250L\)

Seguidamente, multiplicamos el volumen previamente obtenido por la concentración con el fin the encontrar los gramos de sal:

\(0.250L*5\frac{g}{L} \\\\=1.25 g\)

Así, esto indica que se deben disolver 1.25 gramos de sal para este requerimiento.

Ver más:

the possible quantum numbers (ordered n, ℓ, mℓ ) are:Option B.5, 3, -3 and Option C. 4, 3, -2

The quantum numbers n, ℓ, mℓ represent respectively the principal quantum number, the orbital angular momentum quantum number and the magnetic quantum number.

These are the three most important quantum numbers. T

here is another quantum number called the spin quantum number, denoted by ms.

Let's see which of the given quantum number sets is possible.2, 1, 3 is not possible because for ℓ = 1, mℓ can only be -1, 0, or 1. 5, 3, -3 is possible.4, 3, -2 is possible. -4, 3, 1 is not possible.

For any value of ℓ, mℓ must be between -ℓ and +ℓ. e. 2, 1, -2 is not possible because for ℓ = 1, mℓ can only be -1, 0, or 1. f. 3, 2, 2 is not possible because for ℓ = 2, mℓ can only be -2, -1, 0, +1, or +2. g. 3, 3, 1 is not possible because for any value of ℓ, mℓ must be between -ℓ and +ℓ.

Therefore, the possible quantum numbers (ordered n, ℓ, mℓ ) are:5, 3, -34, 3, -2

For more questions on quantum numbers

https://brainly.com/question/30881398

#SPJ8

Answer:

Maybe to hold the whole parts of the cell

Answer:

where is the table..............

Answer:

B

Explanation:

I just took the test.

Answer:

Magnesium burns with a dazzling white flame to form magnesium oxide a powdery mass.

Explanation:

Answer:

b) Magnesium

Explanation:

According to G double O gle, it doesn't react with cold water but reacts to hot water/steam to form magnesium. Hydroxide and Hydrogen gas is released into the air!

Answer:

B. is the answer.

Explanation:

Hello there!

In this case, since the law of conservation of mass states that matter cannot be created nor destroyed, we infer that the correct answer must have the same number of atoms at both sides of the equation.

Therefore, we can see how B. has three white molecules as well as three black molecules at the reactants side and after the chemical reaction there are two molecules having a total of three of each molecule at the products side unlike the other choices; for that reason the correct answer is B.

Best regards!

Answer:    World 5,306,425,000 6,895,889,000 7,503,828,180

1 China 1,139,060,000 1,341,335,000 1,384,688,986

2 India 873,785,000 1,224,614,000 1,296,834,042

3 United States 253,339,000 310,384,000 329,256,465

Explanation:

Answer:

When 16.1 g of octane burn 1.12 moles of  CO₂ are emitted in atmosphere.

Explanation:

Given data:

Mass of octane C₈H₁₈ = 16.1 g

Moles of CO₂ emitted = ?

Solution:

Chemical equation:

2C₈H₁₈ + 25O₂     →    16CO₂+ 18H₂O

Number of moles of octane:

Number of moles = mass/molar mass

Number of moles = 16.1 g/ 114.23 g/mol

Number of moles = 0.14 mol

Now we will compare the moles of octane with carbon dioxide.

             C₈H₁₈            :              CO₂

                 2               :               16

                0.14           :            16/2×0.14 = 1.12 moles

When 16.1 g of octane burn 1.12 moles of  CO₂ are emitted in atmosphere.

The two chemical compounds are not the same, because their ratio is not equal. In both samples the composition of lead and oxygen is different.

A chemical compound is a substance made of numerous similar molecules (or molecular entities) joined by chemical bonds and comprising atoms from various chemical elements. Therefore, a molecule made up of only one type of atom is not a compound. Chemical reactions, which may entail interactions with other molecules, can change a compound into a distinct substance. Atomic bonds may be broken or new ones created during this process.

sample 1 = mass of lead / mass of oxygen = 12.92g/2g = 6.46 .

sample 2 = mass of lead/ mass of oxygen = 34.27 - 14.39/14.39 = 1.38 .

so, the ratios are not the same.

Hence, the two chemical compounds are not the same, because their ratio is not equal. In both samples the composition of lead and oxygen is different.

To know more about Chemical compounds, check out:

https://brainly.com/question/26487468

#SPJ1

How many grams of sodium chloride are there in 2.34 moles of sodium chloride (NaCl)?

To find the mass that we have in 2.34 moles of NaCl, we need the molar mass of NaCl. To get the molar mass of NaCl we have to look for the atomic mass of Na and Cl in the periodic table:

Na: 22.99 amu Cl: 35.45 amu

Using those values we can calculate the molar mass of NaCl:

molar mass of NaCl = 22.99 + 35.45

molar mass of NaCl = 58.44 g/mol

Now that we know the mass of 1 mol of NaCl, we can find the mass of NaCl that there are in 2.34 moles of it.

mass of NaCl = number of moles of NaCl * molar mass of NaCl

mass of NaCl = 2.34 moles * 58.44 g/mol

mass of NaCl = 136.75 g

Answer: There are 137 g of NaCl in 2.34 moles of it.