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Mkey [24]
3 years ago
14

If you are my friend come talk to me

Chemistry
1 answer:
hodyreva [135]3 years ago
4 0

Answer:

what up

Explanation:

How are ya

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Which of the following could have the formula XY₂?
Savatey [412]

Answer: B

Explanation:

There is an atom of one type of element and then two atoms of another type of element.

5 0
2 years ago
Why do group 7 elements have higher melting and boiling points going down?
Genrish500 [490]

Answer:

this is because the van der waals forces or also known as induced dipole-dipole interactions increase because more electrons are present within an atom as you go down

Explanation:

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8 0
3 years ago
Water is a source of ______________ for chemical reactions in cells.
S_A_V [24]

Answer:Electrolyte

Explanation:Electrolyte is a compound either in solution or in molten form that gets decomposed by thee passage if electricity through it. Water is polar,but a weak electrolyte, so in cells,water is used as an electrolyte

5 0
3 years ago
A student claims that if she wanted to make a solution quickly, she should use small pellets instead of powder along with heatin
vova2212 [387]

Answer: Yes we agree with the student's claim.

Explanation:

When the molecules are present in smaller size, more reactants can react as decreasing the size increases the surface area of the reactants which will enhance the contact of molecules.Hence, more products will form leading to increased rate of reaction.

On increasing the temperature will make more reactant molecules will have sufficient energies to cross the energy barrier and thus the number of effective collisions increases, thus leading to more products and increased rate of reaction.

When the solution is stirred , the molecule's kinetic energy and thus the rate of reaction increases.

Thus smaller size, stirring and increase of temperature will make the solution quickly.

7 0
3 years ago
How many moles of co2 can be produced by the complete reaction of 1.53 g of lithium carbonatewith excess hydrochloric acid (bala
nlexa [21]
Moles of Li2CO3 = 1.53/73.891 = 0.0207 mole
Since HCl is in excess, amount of CO2 will depend on the limiting reagent which is Li2CO3.

∴Moles of CO2 = Moles of Li2CO3 = 0.0207. 
7 0
3 years ago
Read 2 more answers
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