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Sophie [7]
2 years ago
15

Calculate the molarity of each of the following solutions. Use the periodic table if necessary.

Chemistry
2 answers:
-Dominant- [34]2 years ago
8 0

Answer: 2.8

Explanation: just took the quiz

frosja888 [35]2 years ago
7 0

Answer:

2.8

Explanation:

EDGE 2021

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Choose the pair in which the first particle has a higher ionization energy than the second particle.
Elena L [17]

A. CI, Br

Explanation:

Different kinds of atoms bind their valence electrons with various amounts of energy. In order to remove the valence electrons, enough energy must be available.

The amount of energy required for the removal of an electron is the ionization energy or ionization potential.

The ionization energy depends on:

  • Nuclear charge
  • Atomic radius
  • Sublevel accomodating the electron to be removed.
  • Special stability of half or fully filled sublevels.

Across a period, the ionization energy increases.

Down a group ionization energy decreases due to increasing atomic radii.

Cl and Br are in the same periodic group. Cl is element number 2 and Br is element 3 in the group of the halogens.

Therefore, Cl will have a higher ionization energy compared to Br.

Learn more:

Ionization energy brainly.com/question/2153804

#learnwithBrainly

8 0
3 years ago
Conservation of ____________ energy is only valid when it occurs in a situation with no frictional force.
Flura [38]
Potential energy......
5 0
3 years ago
What is anisotropy.Explain briefly with example.
Zarrin [17]

Explanation:

Anisotropy is the property of being directionally dependent, which implies different properties in different directions, as opposed to isotropyAn example of anisotropy is light coming through a polarizer. Another is wood, which is easier to split along its grain than across it.

8 0
3 years ago
Calculate the pHpH of a 0.10 MM solution of HClHCl . Express your answer numerically using two decimal places.
alisha [4.7K]

Answer: The pH 0f 0.10 solution of HCl is 1.00

Explanation:

pH or pOH is the measure of acidity or alkalinity of a solution.

pH is calculated by taking negative logarithm of hydrogen ion concentration.

pH=-\log [H^+]

HCl\rightarrow H^++Cl^{-}

According to stoichiometry,  

1 mole of HCl gives 1 mole of H^+  

Thus 0.10 moles of HCl gives =\frac{1}{1}\times 0.10=0.10 moles of H^+  

Putting in the values:

pH=-\log[0.10]

pH=1.00

Thus pH 0f 0.10 solution of HCl is 1.00

8 0
2 years ago
NaCl has a mc020-1.jpgHfus = 30.2 kJ/mol. What is the mass of a sample of NaCl that needs 732.6 kJ of heat to melt completely?
lilavasa [31]

Answer: The mass of the sample will be 1417.7 grams.

Explanation:

We are given:

\Delta H_{fusion}=30.2kJ/mol

This means that 1 mole of NaCl has an enthalpy of fusion of 30.2 kJ

1 mole of NaCl has a mass of 58.44 grams.

So, 30.2 kJ of heat is require for a mass 58.44 grams of NaCl

So, 732.6 kJ of heat will be required for = \frac{58.44g}{30.2kJ}\times 732.6 kJ = 1417.65 grams of NaCl.

Hence, the mass of NaCl sample will be 1417.7 grams.

5 0
3 years ago
Read 2 more answers
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