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Alchen [17]
3 years ago
13

Which factor can decrease the rate of a chemical reaction? low activation energy high pressure low temperature high concentratio

n of reactants
Chemistry
2 answers:
AveGali [126]3 years ago
7 0
Low temperature! since there are less molecules with energy greater than activation energy and they posses less energy to collide with each other and change into products.
blagie [28]3 years ago
4 0

Answer:

C

Explanation:

edge

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Chlorine (CI) can be found as an ion with a 1- charge. How does this happen?
Lesechka [4]

Answer:There are 18 electrons and 17 protons, so the chlorine atom has become a charged chlorine ion with a charge of negative one (-1). ... When it does, the sodium atom becomes a sodium ion with a charge of positive one (+1). Chlorine, as mentioned above, desperately wants an electron so it can fill its outer electron level.

8 0
3 years ago
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Explain how you know that no new element with an atomic number less than 100 will be discovered
Klio2033 [76]
The elements are identified by its aomic number and they are placed in the periodic table in ascending order of atomic number.

There is one unique element for a given atomic number.

For example, atomic number 1 identifies Hydrogen and there cannot be another different element with the same atomic number.

All the elements with atomic numbers from 1 to 118 have been discovered. So, you know that there is not room for new products with atomic number equal or less than 118.
3 0
3 years ago
Calculate the number of Cl atoms that are in 1.1 x 10^-21 moles of Cl atoms.
Margarita [4]

According to Avogadro's number there are 62.53 atoms of chlorine in 1.1x 10^-21 moles of Cl atoms.

<h3>What is Avogadro's number?</h3>

Avogadro's number is defined as a proportionality factor which relates number of constituent particles with the amount of substance which is present in the sample.

According to the definitions, Avogadro's number depend on determined value of mass of one atom of those elements.It bridges the gap between macroscopic and microscopic world by relating amount of substance with number of particles.

Number of atoms can be calculated using Avogadro's number as follows: mass/molar mass×Avogadro's number or number of moles×Avogadro's number.

ON substitution in above formula number of atoms=1.1×10²¹×6.023×10²³=62.53 atoms

Thus, there are 62.53 chlorine  atoms in 1.1x 10^-21 moles of Cl atoms.

Learn more about Avogadro's number,here:

brainly.com/question/11907018

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6 0
1 year ago
When 189.6 g of ethylene (C2H4) burns in oxygen to give carbon dioxide and water, how many grams of CO2 are formed?
BaLLatris [955]

Answer:

6.76

Explanation:

6 0
4 years ago
I don't know can you help me
love history [14]
Its a echo being used in that picture so if i was ypu you should classify my answer

8 0
3 years ago
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