What is an example of physical weathering?

A.
Carbonic Acid

B.
Frost Wedging

C.
Hydrolysis

Answer:

2.8 m

Explanation:

Step 1: Given data

Step 2: Calculate the molality of the solution

Molality is a unit used to express the concentration of a solution. It is equal to the moles of solute divided by the kilograms of solvent.

m = moles of solute / kilograms of solvent

m = 0.210 mol / 0.075 kg

m = 2.8 mol/kg = 2.8 m

Answer:

ΔE = q + w

here q = -136 kj

w = 146

so  ΔE = -136 + 146 = 10 kj

thus internal energy of system increases by 10 kj...

I hope this helps! :) I don't know if it's the right one

Answer:

the steady-state concentration of TCE in the treated water leaving the reactor is 5.88 mg/L  

Explanation:

Given that;

Tank volume v = 3250 liters

wastewater flows into the tank Q = 200 L/min

TCE concentration Co= 25 mg/L

reactor decays TCE at a reaction rate K = 0.20 min-1

mass balance

we know that;

Accumulation = inflow - outflow ± generation

⇒dc/dt = QCo - Qc ± rc.V

now at a steady state; dc/dt = 0

so

0 = QCo - Qc + rcV

where rc = -kc

0 = QCo - Qc - kcV

Qc + kcV = QCo

c(Q + kV) = QCo  

c = QCo / (Q + kV)

so we substitute

c = (200 × 25) / (200 + (0.2×3250))

c = 5000 / 850

c = 5.88 mg/L      

Therefore,  the steady-state concentration of TCE in the treated water leaving the reactor is 5.88 mg/L  

Answer:

2,795 F

Explanation:

Answer:

D. 30-40 kg.

good luck, i hope this helps :)

umm so what's the question ???

Answer:

92.8%

Explanation:

Step 1: Given data

Step 2: Calculate the total mass of the bullet

The total mass of the bullet is equal to the sum of the masses of the elements that form it.

m = mPb + mSn + mSb = 11.6 g + 0.5 g + 0.4 g = 12.5 g

Step 3: Calculate the mass percentage of Pb in the bullet

We will use the following expression.

%Pb = mPb / m × 100%

%Pb = 11.6 g / 12.5 g × 100% = 92.8%

Answer:

ions are deflected and the lighter the ions the more the deflection.

Placing magnetic field in the path of the ions cause them to move in a curved path.

Explanation:

This question is all about the way in which mass spectroscopy works. Mass spectroscopy Is one of the techniques in spectroscopy which is used in the identification of chemical compounds.

Mass spectroscopy works based on the principle of ionization. For a mass spectroscopy to start ionization must first occur that is to say this is the first step in the identification of compound in mass spectroscopy.

The following steps are involve in mass spectroscopy;

=> Ionization: the molecules of the sample are first ionized. The ions formed here are positive ions.

=> Acceleration: the ions in step one are accelerated.

=> Deflection: the smaller ions get deflected more than the bigger ions. The magnetic field is used in the deflection of this ions.

=> Detection: the ions are then detected.

Therefore, to answer the question, the ions are deflected and the lighter the ions the more the deflection.

Placing magnetic field in the path of the ions cause them to move in a curved path.

0.499 mol Ti

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Atomic Structure

Stoichiometry

Step 1: Define

23.9 g Ti (Titanium)

Step 2: Identify Conversions

[PT] Molar Mass of Ti - 47.88 g/mol

Step 3: Convert

Step 4: Check

Follow sig fig rules and round. We are given 3 sig figs.

0.499165 mol Ti ≈ 0.499 mol Ti

Answer:

[tex]\boxed {\boxed {\sf About \ 0.499 \ grams \ of \ Titanium}}[/tex]

Explanation:

To convert from grams to moles, we must use the molar mass, which can be found on the Periodic Table.

Use this number as a fraction.

[tex]\frac{47.87 \ g \ Ti}{ 1 \ mol \ Ti}[/tex]

Multiply by the given number of grams: 23.9

[tex]23.9 \ g\ Ti *\frac{47.87 \ g \ Ti}{ 1 \ mol \ Ti}[/tex]

Flip the fraction so the grams of titanium cancel out.

[tex]23.9 \ g\ Ti *\frac{ 1 \ mol \ Ti}{47.87 \ g \ Ti}[/tex]

[tex]23.9 *\frac{ 1 \ mol \ Ti}{47.87 }[/tex]

[tex]\frac{ 23.9 \ mol \ Ti}{47.87 }[/tex]

Divide.

[tex]0.499268853 \ mol \ Ti[/tex]

The original measurement had 3 significant figures, so our answer must have the same. For the number we calculated, that is is the thousandth place. The 2 in the ten thousandth place tells us to keep the 9.

[tex]0.499 \ mol \ Ti[/tex]

There are 0.499 moles of titanium in 23.9 grams.

Answer:

a radiation of the sun

Explanation:

Answer:

[tex]V=5.2 mL=0.052L[/tex]

Explanation:

Hello!

In this case, since the chemical reaction between silver nitrate and sodium chloride is:

[tex]AgNO_3(aq)+NaCl(aq)\rightarrow AgCl(s)+NaNO_3(aq)[/tex]

We can see there is a 1:1 mole ratio between each solution; thus, we first compute the moles of each reactant considering their molar masses:

[tex]n_{AgNO_3}=14.77g*\frac{1mol}{169.87g}=0.087molAgNO_3\\\\ n_{NaCl}=0.2631g*\frac{1mol}{58.44}=0.0045molNaCl[/tex]

Now, since the concentration of the silver chloride solution is 0.087 M, we may assume that the concentration of the NaCl solution is the same, so we can compute the volume as shown below:

[tex]V=\frac{n_{NaCl}}{M}=\frac{0.0045mol}{0.087mol/L}\\\\V=0.052L[/tex]

Or:

[tex]V=5.2 mL[/tex]

Best regards!

The volume of solution needed to react with 0.2631 g of NaCl  is 0.052 L.

Volume of the solution will be calculated by using the below formula:

M = n/V, where

M = concentration in terms of molarity

n = no. of moles

V = volume

Given chemical reaction is:

AgNO₃(aq) + NaCl(aq) → AgCl(s) + NaNO₃(aq)

First we calculate the moles of given reactants by using the formula:

n = W/M , where

W = given mass

M = molar mass

Moles of AgNO₃ = 14.77g / 169.87g/mole = 0.087 mole

Moles of NaCl = 0.2631g / 58.44g/mole = 0.0045 mole

Concentration of AgNO₃ = 0.087 mole / 1L = 0.087M

From the stoichiometry of the reaction it is clear that mole ration of AgNO₃ & NaCl is 1:1. So, we take the concentration of NaCl is equal to the concentration of AgNO₃ and calculate the volume by using the above formula as:

Volume of NaCl = 0.0045mole / 0.087M = 0.052 L

Hence, 0.052 L is the required volume of NaCl.

To know more about moles, visit the below link:

https://brainly.com/question/17199947

Answer:

When a liquid releases enough energy, the liquid will freeze and turn into a solid. Phase changes are what causes one state of matter to turn into another. ... Phase changes occur because of changes in the amount of kinetic energy obtained by the particles that make up a substance. Kinetic energy is the energy of movement.

Explanation:

Answer: A Baseball

Explanation:

The greater the mass of an object the shorter its wavelength as they are inversely proportional.

The item from the options that would have the shortest wavelength is ( D ) A baseball

Given that the energy exposed to all the element/item is the same the item that would posses the shortest wavelength is the Baseball because the mass of an object is inversely proportional to the length of its wavelength.

since the baseball has the highest mass it will also posses the shortest wavelength compared to others in the options given.

Hence we can conclude that the item that would have the shortest wavelength is A baseball.

Learn more :  https://brainly.com/question/16051869

Match the following elements with their symbols.

[tex] \sf 1.\: mercury \: \: \: \: \: \: \: \: \: Ag (2)\\ \sf 2.\: silver \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: He (6) \\ \sf 3.\: gold \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: Al (4) \\ \sf 4.\: aluminum \: \: \: \: \: \: \: Fe (5) \\ \sf 5.\: iron \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: Hg (1)\\ \sf 6.\: helium \: \: \: \: \: \: \: \: \: \: \: \: Ca (7) \\ \sf 7.\: calcium \: \: \: \: \: \: \: \: \: \: Au (3)\\ \sf 8.\: magnesium \: \: \: Mg(8) \\ \sf 9.\: nickel \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: Ni(9) \\ [/tex]

_____________________________

4.7 × 10²⁴ atoms Li

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Atomic Structure

Stoichiometry

Step 1: Define

7.8 mol Li

Step 2: Identify Conversions

Avogadro's Number

Step 3: Convert

Step 4: Check

We are told to round to 2 sig figs. Follow sig fig rules and round.

4.69716 × 10²⁴ atoms Li ≈ 4.7 × 10²⁴ atoms Li

Answer:

10.15748 so it is none of the above

Explanation:

I just know

Answer:

Coron, Palawan, El Nido, Palawan, Cebu, Boracay, Siargao.

Explanation:

I hope this helps.

coron,palawan,El nidu, Cebu and boracay are 5 island in Philippines.....

Answer:

[tex]= 3.105x10^{24}molecules\ acetone[/tex]

Explanation:

Hello!

In this case, given the volume of acetone, it is possible to compute the mass and next the moles via its molar mass (58.08 g/mol) as shown below:

[tex]n_{acetone}=380mL*\frac{0.788g}{1mL} *\frac{1mol}{58.08 g} \\\\n_{acetone}=5.16mol[/tex]

Then, via the Avogadro's number it is possible to compute the acetone molecules as follows:

[tex]=5.16mol*\frac{6.022x10^{23}molecules}{1mol}\\\\= 3.105x10^{24}molecules\ acetone[/tex]

Best regards!

Answer:

ruthless, my style as a juvenile

ran with a gang, slanged in the meanwhile

Explanation:

Answer:

1,2 di methyl 5 ene tri chloro hexane

A (they are experimentally determined exponents)

Answer:

option A iis the right answer

Answer:

60 joules. ....................

Answer:

B. physical property is the answer

Answer:

HC₂H₃O₂ + 2O₂ —> 2CO₂ + 2H₂O

The coefficients are: 1, 2, 2, 2

Explanation:

From the question given above, the following data were obtained:

HC₂H₃O₂ + O₂ —> CO₂ + H₂O

We can balance the above equation as follow:

HC₂H₃O₂ + O₂ —> CO₂ + H₂O

There are 4 atoms of H on the left side and 2 atoms on the right side. It can be balance by writing 2 before H₂O as shown below:

HC₂H₃O₂ + O₂ —> CO₂ + 2H₂O

There are 2 atoms of C on the left side and 1 atom on the right side. It can be balance by writing 2 before CO₂ as shown below:

HC₂H₃O₂ + O₂ —> 2CO₂ + 2H₂O

There are 4 atoms of O on the left side and a total of 6 atoms on the right side. It can be balance by writing 2 before O₂ as shown below:

HC₂H₃O₂ + 2O₂ —> 2CO₂ + 2H₂O

Now the equation is balanced.

The coefficients are: 1, 2, 2, 2