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2 years ago

Arrange the elements in order of increasing electronegativity. Use the periodic table to help you arrange the elements.

Chemistry

1 answer:

ivolga24 [154]2 years ago

5 0

Answer:

K<Mg<P<O

Explanation:

Trend is increasing across period and decreasing down a group

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What volume of 0.200 M ethanol solution contains each of the following amounts?

Papessa [141]

Answer:

A. 2.3 L

B. 6.10 L

C. 0.060 L

Explanation:

The question asks the volume of a 0.200 M solution of ethanol that contains certain number of moles of ethanol.

The M in the 0.200 M stands for Molarity. This is a unit of concentration that can be expressed as:

Molarity = moles of solute / Liters of solution

In this case:

0.200 M = moles of ethanol / Liters of solution

So from the formula we can get that we can calculate the volume of the solution, as Liters of solution, given the moles in each case as:

Liters of solution = moles of ethanol / 0.200 moles/L

_______________________________________________

A. 0.45 mol ethanol

Liters of solution = 0.45 moles / 0.200 moles/L = 2.25 L = 2.3 L

B. 1.22 mol ethanol

Liters of solution = 1.22 moles / 0.200 moles/L = 6.10 L

C. 1.2 x 10⁻² mol ethanol

Liters of solution = 1.2 x 10⁻² moles / 0.200 moles/L = 0.060 L

_______________________________________________

Note: Each answer is given with the correct number of significant figures which results from the least number of significant figures in the given used values in each calculation.

7 0

3 years ago

An organism that hunts other organisms for food is a

Zepler [3.9K]

Answer:

B) a predator

6 0

3 years ago

Read 2 more answers

Which statement about Schrödinger's theory of the atomic model is true?

vekshin1

Answer : Option C) It explained the odds of finding the position of an electron.

Explanation : Schrödinger's theory of the atomic model is true for the probability of finding the electron around the nucleus. Schrödinger used odd mathematical equations to describe the likelihood of finding an electron in a certain position around the nucleus. This atomic model was known as the quantum mechanical model of the atom. He posed an equation which is now called as the Schordinger’s Wave Equation, which incorporates both the wave-like and particle-like behaviors of electrons, which stated that electrons can act like waves/light and particles. Which later helped to develop the uncertainty principle for finding the probable position of the electron.

4 0

4 years ago

Addition of _____________ to pure water causes the least increase in conductivity. A) weak bases B) acetic acid C) ionic compoun

elena55 [62]

Answer:

Explanation:

3 0

3 years ago

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A gas in a sealed container has a pressure of 125 atm at a temperature of 303 K. If the pressure in the container is increased t

victus00 [196]

Answer:

$T_2=484.8K$

Explanation:

Hello there!

In this case, according to the the variable temperature and pressure and constant volume, it turns out possible for us to calculate the new temperature via the Gay-Lussac's law as shown below:

$\frac{T_2}{P_2} =\frac{T_1}{P_1}$

Thus, by solving for the final temperature, T2, we obtain:

$T_2 =\frac{T_1P_2}{P_1}$

So we plug in the given data to obtain:

$T_2 =\frac{303K*200atm}{125atm}\\\\T_2=484.8K$

Best regards!

6 0

3 years ago