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3 years ago

A reaction that has two compounds as reactants and two compounds as products is most likely a

Chemistry

1 answer:

ryzh [129]3 years ago

7 0

Answer:

synthesis reaction

Explanation:

A synthesis reaction occurs when two or more reactants combine to form a single product. In a decomposition reaction, one reactant breaks down into two or more products. This is the reverse of a synthesis reaction. Replacement reactions occur when elements switch places in compounds.

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Lithium Iodide Has A Lattice Energy Of −7.3×102kJ/mol And A Heat Of Hydration Of −793kJ/mol. Lithium iodide has a lattice energy

daser333 [38]

Answer:

Heat of solution= - 63KJ/mole

Heat evolved = - 18.82KJ

Explanation:Heat of solution = Heat of solute + Heat of hydration

◇Hsoln = - ( - 7.3 × 10 ^ 2) + ( - 793 ) KJ / mol

◇H soln= - 63 KJ

Use enthalpy of solution equation to determine the enthalpy of solution for LiI

LiI ---> Li^ + + I^-

Molecular mass of LiI=133.85g

The chemical equation for the dissociation will be:

40gLiI (1molLiI)/133.85g LiI - 63KJ/1 mol LiI

18.82KJ

The heat was evolved because the value of enthalpy was negative

6 0

3 years ago

Which of the following is/are considered alcohols?

Paladinen [302]

Answer: THE ANSWER IS D

Explanation:

an alcohol is a hydrocarbon chain with an hydroxyl group (OH)

A, B, AND C ARE ALL ALCOHOLS, SO THE ANSWER IS D

6 0

3 years ago

What is the main difference between a pure substance and a mixture?

rjkz [21]

Answer:

Pure substances are Broken down into other elements or compounds, while Mixtures are combined elements that can be broken down again into their original components.

Explanation:

Mixtures can vary with what they are made from, while pure substances are set as a certain composition already.

8 0

3 years ago

Decide which element probably has a boiling point most and least similar to the boiling point of cesium.

natka813 [3]

Answer:

Take a look at the attachment below

Explanation:

Take a look at the periodic table. As you can see, Rubidium is the closest element to Cesium, and happens to have the closest boiling point to Cesium, with only a difference of about 30 degrees.

Respectively, you would think that fluorine should have the least similarity to Cesium with respect to it's boiling point, considering it is the farthest away from the element out of the 4 given. This is not an actual rule, there are no fixed trends of boiling points in the periodic table, there are some but overall the trends vary. However in this case fluorine does have the least similarity to Cesium with respect to it's boiling point, a difference of about 1,546.6 degrees.

<em>Hope that helps!</em>

5 0

3 years ago

I need help as soon as posible

In-s [12.5K]

2. CO
3.O2
4.NH3
5.NO
6.NO2
7.CO2
8.H2

3 0

4 years ago