How much will this EROSION change the elevation at location W, to the nearest meter?

Answer:

They have a definite shape and volume. The particles are very close and compacted together.

Explanation:

Answer:

Liquid Solids are rigid due to strong glass of attraction between the particles.

Explanation:

Answer:

2+2 kaszkqkq

Explanation:

Answer:

As a result of human activities, plastic impacts the envionment in negative way that leads to serious environmental danger.

Explanation:

When we don't throw away plastic materials correctly, it causes littering. Well, this can also lead to piles of that, meaning that it is spreading toxins. Littering may also lead to blockages in flowing streams, lakes, river, ground water, big bodies of water, and small bodies of water. This also can contribute to global warming because plastic are made from chemicals that come from the production of fuels like oil, gas, coal and possible more.

Answer:

cells -> tissues -> organs -> organ system

Answer:

Cells > tissues > Organs > Organs Systems

Explanation:

tissues are made of a group of cells

a specific organ is made up of a geoup of specific type of tissues

and a group of organs make up the organs system

Answer:

The copper pan!

Explanation:

Copper conducts heat well because its atoms contain only one free valence electrons in the outer shell. Elements with a low number of valence electrons transfer heat the best, and copper has only one. Valence electrons move about freely.

Good luck on your assignment!

Answer:

B. partial negative charge on the oxygen atom because it pulls electrons from the hydrogen atoms

Explanation:

Oxygen has a charge of 6 so they need to pull 2 electrons from hydrogen, which creates a partial negative charge.

Answer:

This statement is true

Answer: There are 0.523 moles of Titanium in [tex]3.15\times 10^{23}[/tex] atoms of Titanium

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number [tex]6.023\times 10^{23}[/tex] of particles.

To calculate the moles, we use the equation:

[tex]\text{Number of moles}=\frac{\text{Given atoms}}{\text {avogadro's number}}[/tex]

[tex]\text{Number of moles of Titanium}=\frac{3.15\times 10^{23}}{6.023\times 10^{23}}=0.523moles[/tex]

Answer:

copper metal and steel metak

Answer:

Every element to the left of the staircase on the Periodic Table is a metal, excluding Hydrogen, and everything to the right of that staircase is a non-metal.

Explanation:

Explanation:

The Answer Is

That The Coral Releases Its Colours And Becomes Pale White

Answer:

Birds

Explanation: They are both mammals

Answer:

birds

Explanation:

Answer:

0.383 mole [tex]Cl_{2}[/tex]

Explanation:

Using dimensional analysis, we can find the number of moles of [tex]Cl_{2}[/tex] needed to react with 1.1 moles of [tex]F_{2}[/tex].

Answer:

1. True

2. True

3.True

4. False

5. True

6. False

7.True

Explanation:

Answer:

1.79 L

Explanation:

Step 1: Given data

Step 2: Convert T₁ to Kelvin

We will use the following expression.

K = °C + 273.15

K = 25.0 °C + 273.15 = 298.2 K

Step 3: Calculate the final volume of the gas

We will use the combined gas law.

P₁ × V₁ / T₁ = P₂ × V₂ / T₂

V₂ = P₁ × V₁ × T₂ / T₁ × P₂

V₂ = 745.0 mmHg × 2.00 L × 273 K / 298.2 K × 760.0 mmHg = 1.79 L

Answer:

It is the solution of a mixture of a weak base and a salt of this weak base with a strong acid.

Explanation:

Answer:

i

Explanation:

Answer:

Ca(OH)2 + H2

Explanation:

hope this helps

Answer:

Lead

Explanation:

Answer:

[tex]-675.053\ \text{kJ/mol}[/tex]

Explanation:

[tex]\Delta G[/tex] = Gibbs free energy = [tex]-775.41\ \text{kJ/mol}[/tex]

[tex]\Delta S[/tex] = Change in entropy = [tex]817.91\ \text{J/mol K}=0.81791\ \text{kJ/mol K}[/tex]

[tex]T[/tex] = Temperature = [tex]135.4^{\circ}\text{C}=408.55\ \text{K}[/tex]

[tex]\Delta H[/tex] = Change in enthalpy

Gibbs free energy is given by

[tex]\Delta G=\Delta H-T\Delta S\\\Rightarrow \Delta H=\Delta G+T\Delta S\\\Rightarrow \Delta H=-775.41+408.55\times 0.81791\\\Rightarrow \Delta H=-441.253\ \text{kJ/mol}[/tex]

[tex]T=12.7^{\circ}\text{C}=285.85\ \text{K}[/tex]

[tex]\Delta G=\Delta H-T\Delta S\\\Rightarrow \Delta G=-441.253-285.85\times 0.81791\\\Rightarrow \Delta G=-675.053\ \text{kJ/mol}[/tex]

The required Gibbs free energy is [tex]-675.053\ \text{kJ/mol}[/tex].

0.130 moles NH₃

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Atomic Structure

Stoichiometry

Step 1: Define

[Given] 7.85 × 10²² molecules NH₃

[Solve] moles NH₃

Step 2: Identify Conversions

Avogadro's Number

Step 3: Convert

Step 4: Check

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

0.130355 moles NH₃ ≈ 0.130 moles NH₃

Answer:

At pH 4.85 , 76% of [tex]Mg^2^+[/tex]will be precipitated as the hydroxide salt.

Explanation:

When 76% of [tex]Mg^{2}^{+}[/tex] has precipitated out , 24% remains out.

Given= Ksp for [tex]Mg(OH_2) = 8.9\times10^-^1^2[/tex]

(Here , ksp is the molar solubility )

Now ,

   [tex][Mg^{2}^{+}] =\frac{24}{100}\times 0.052[/tex]

             = [tex]1.248\times10^-^2[/tex]

   [tex]Mg(OH)_2<=> Mg^2^+ + 2OH^-[/tex]

We , know the formula to find out the ksp ,

Given formula is -

     [tex]Ksp = [Mg^2^+][OH^-][/tex]

Now , putting the given values ,

[tex]8.9\times 10^-^1^2= 1.248\times10^-^2\times[OH]^-[/tex]

    [tex][OH]^- = 7.131\times 10^-^1^0[/tex]

Now , calculating the pH,

[tex][H^+]=\frac{Kw}{[OH]^-}[/tex] ( where Kw is the ionic product of the water)

          [tex]= \frac{10^-^1^4}{7.131\times10^-^1^0}[/tex]

             [tex]1.402\times10^-^5[/tex]

 [tex]pH=-Log[H^+][/tex]

          [tex]-Log[1.402\times10^-^5][/tex]

         = 4.85

Therefore , the pH to be precipitated is 4.85

pH measures the acidic or the basic concentration of the substance in a solution. At pH 4.85, the magnesium ion will precipitate as its hydroxide salt.

The potential of hydrogen is calculated as the negative log of the hydrogen ion concentration in the aqueous solution.

The balanced reaction is shown as,

[tex]\rm Mg(OH_{2}) \Leftrightarrow Mg^{2+} + 2OH^{-}[/tex]

If, 76% magnesium precipitates then 24% will remain in. The concentration of the remaining magnesium will be,

[tex]\begin{aligned} \rm [Mg^{2+}] &= \dfrac{24}{100}\times 0.052\\\\&= 1.248 \times 10^{-2}\end{aligned}[/tex]

The molar solubility is calculated as:

[tex]\begin{aligned} \rm Ksp &= \rm [Mg^{2+}][OH^{-}]\\\\8.9 \times 10^{-12} &= 1.248 \times 10^{-2} \times \rm [OH^{-}]\\\\&= 7.13 \times 10^{-10}\end{aligned}[/tex]

The concentration of the hydrogen ions is calculated as:

[tex]\begin{aligned} \rm [H^{+}] &= \rm \dfrac{Kw}{[OH^{-}]}\\\\&= \dfrac{10^{-14}}{ 7.13 \times 10^{-10}}\\\\&= 1.402 \times 10^{-5}\end{aligned}[/tex]

Further, pH is calculated as:

[tex]\begin{aligned} \rm pH &=\rm -log [H^{+}]\\\\&= -\rm log [1.402 \times 10^{-5}]\\\\&= 4.85\end{aligned}[/tex]

Therefore, at 4.85 pH the magnesium ion will precipitate out as hydroxide salt.

Learn more about pH and precipitation here:

https://brainly.com/question/15584956

Answer:

450 mL

Explanation:

First we calculate how many NaCl moles would there be in 1.5 L of a 0.75 M solution, using the definition of molarity:

Once again using the definition of molarity, we now calculate how many liters of a 2.5 M solution would have 1.125 moles:

Finally we convert 0.45 liters to mL:

Answer:

C

Explanation:

Since they all are 2 mols worth, all you have to do is count the number of atoms in each molecule

H2SO4 contains 2 hydrogen 1 sulfur 4 oxygen                = 7 atoms

H2S      contains 2 hydrogen and 1 sulfur                          = 3 atoms

H3PO4 contains 3 hydrogens 1 phosphorus  4 oxygens = 8 atoms

HNO3   contains 1 hydrogen 1 nitrogen and 3 oxygens   = 5 atoms

You have the right answer.

Answer:

#2 water freezes at 32F ,0 °C ,273.2K