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3 years ago

What trend does the first ionization energy follow, going down the periodic table?

Chemistry

1 answer:

photoshop1234 [79]3 years ago

7 0

Answer:

going down the periodic table atomic size increases,electronegativity and ionization decreases going down

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Please help me with this questions.

Alisiya [41]

1. Hydrogen
2. 11
3. Alkali metals
4. Increases
5. Increases
7. Seven
8. Less
9. hydrogen
10. Idk

7 0

3 years ago

A solution is made by mixing of 42.g water and 77.g of acetic acid HCH3CO2. Calculate the mole fraction of water in this solutio

KengaRu [80]

Moles of $H_2O$ ,

$n_{H_2O}=\dfrac{42}{2\times 1 + 16}=\dfrac{42}{18}\\\\n_{H_2O}=2.33\ moles$

Moles of acetic acid $HCH_3CO_2$ ,

$n_{A.A}=\dfrac{77}{1 + 12 + 3 + 12 + 16\times 2}=\dfrac{77}{60}\\\\n_{A.A}=1.28\ moles$

Mole fraction of water :

$M.F_{H_2O}=\dfrac{n_{H_2O}}{n_{H_2O}+n_{A.A}}\\\\M.F_{H_2O}=\dfrac{2.33}{2.33+1.28}\\\\M.F_{H_2O}=0.645$

Therefore, mole fraction of water in this solution is 0.645 .

Hence, this is the required solution.

6 0

4 years ago

A bike tire has a volume of 0.850L at a pressure of 40.0 psi and 0.00°C. What will be the

Tema [17]

Answer:

45.13 psi

Explanation:

Assuming the volume does not change

P1/T1 = P2/T2 T must be in Kelvin

40/(273.15) = P2/(273.15 + 35) P2 = 45.13 psi

4 0

2 years ago

Hi All,

Novosadov [1.4K]

Answer:Combination.

Decomposition.

Single displacement.

Double displacement.

Combustion.

Redox.

Explanation:

4 0

3 years ago

It’s sometimes said that water is a “universal solvent.” Do a little research on this term. Why do some people call it this? Wha

Strike441 [17]

Water is called "universal solvent" because it is capable of dissolving various types of substances than any other solvent. The water's chemical composition such as its atoms that have a balance electrical charge and arrangement of polar makes it capable of dissociating different ionic compounds and balanced attraction to sodium and other elements, suitable to nature of any substances or life forms. However, this could be a problem in everyday life because given the title "universal solvent", it does not necessarily dissolve every compound. For example: water alone cannot be used in cleaning oils because it can't dissolve waxes and fats, and in dissolving large amounts of salt or sugar in our body.

4 0

4 years ago