1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Mekhanik [1.2K]
3 years ago
12

Why electronegative decrease going down the periodic table

Chemistry
1 answer:
liraira [26]3 years ago
5 0
Moving down in a group, the electronegativity decreases due to an increase in the distance between the nucleus and the valence electron shell, thereby decreasing the attraction, making the atom have less of an attraction for electrons or protons.
You might be interested in
The amount of energy stored in a molecule of ato compared to the amount stored in a molecule of glucose is
frozen [14]
Did you mean "atp"? if so It is less I hope this helps please mark brainliest :)
6 0
3 years ago
Using the same sample of gas (P1 = 565 torr , T1 = 27 ∘C ), we wish to change the pressure to 5650 torr with no accompanying cha
Stels [109]

Answer:

2726.85 °C

Explanation:

Given data:

Initial pressure = 565 torr

Initial temperature = 27°C

Final temperature = ?

Final pressure = 5650 torr

Solution:

Initial temperature = 27°C (27+273 = 300 K)

According to Gay-Lussac Law,

The pressure of given amount of a gas is directly proportional to its temperature at constant volume and number of moles.

Mathematical relationship:

P₁/T₁ = P₂/T₂

Now we will put the values in formula:

T₂  = P₂T₁ /P₁

T₂  = 5650 torr × 300 K / 565 torr

T₂  = 1695000 torr. K /565 torr

T₂ = 3000 K

Kelvin to degree Celsius:

3000 K - 273.15 = 2726.85 °C

4 0
2 years ago
What mass of dinitrogen monoxide, N2O, contains the same number of molecules as 3.00 g of trichlorofluoromethane, CCl3F?
erica [24]

Answer:

0.9612 g

Explanation:

First we <u>calculate how many moles are there in 3.00 g of CCl₃F</u>, using its <em>molar mass</em>:

  • 3.00 g CCl₃F ÷ 137.37 g/mol = 0.0218 mol CCl₃F

Now, we need to calculate how many grams of N₂O would have that same number of molecules, or in other words, <em>the same amount of moles</em>.

Thus we <u>calculate how many grams would 0.0218 moles of N₂O weigh</u>, using the <em>molar mass of N₂O</em> :

  • 0.0218 mol N₂O * 44.013 g/mol = 0.9612 g N₂O
3 0
3 years ago
How does an increase in temperature affect a chemical reaction??
blsea [12.9K]
An increase in the temperature will speed up the reaction by increasing the frequency and efficiency of the collisions of molecules.
8 0
3 years ago
Which types of reactions would result in a change in temperature?
Law Incorporation [45]

Answer:

Chemical reaction involves the breaking of bonds in the reactants and formation of bonds in the products. ... If a reaction is exothermic, more energy is released when the bonds of the products are formed than it takes to break the bonds of the reactants. This is the reason for temperature change during a reaction.

Explanation:

Here are just a few everyday demonstrations that temperature changes the rate of chemical reaction: Cookies bake faster at higher temperatures. Bread dough rises more quickly in a warm place than in a cool one.

6 0
3 years ago
Other questions:
  • A substance has a heat of fusion of 155 J/g. How many joules of energy are required to be removed in order to freeze a 10.0 g sa
    13·1 answer
  • A gas has a volume of 350.0 mL at 45.0°C. If the volume changes to 400.0 mL, what is the new
    8·1 answer
  • I WILL MARK BRAINLIEST If the number of crests that pass a point in a given time increases, what has decreased?
    7·2 answers
  • PLEASE HELP ME ASAPPPPP<br> How many moles are in 10.25 grams of NH3?
    7·1 answer
  • How many hydrogen atoms are present in 5.00 mg of aspartame?
    6·1 answer
  • Who arranged the periodic table according to atomic mass
    5·1 answer
  • Name a substance which will undergo changes from solid to liquid to gas between 0c and 100c ​
    15·1 answer
  • What is the chemical formula for stannic oxide​
    14·2 answers
  • Fill in the blank...<br> Each element is made up of only one kind of ________
    6·1 answer
  • I am named after the Russian scientist who organized the periodic table by atomic mass. Who am I?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!