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dexar [7]
3 years ago
8

PLEASE HELP

Chemistry
1 answer:
Snezhnost [94]3 years ago
7 0
Use Calcium Chloride.  sucrose doesn't break apart so it won't decrease the freezing point much, NaCl is better because you have twice as many ions running around than sucrose, and CaCl2 is the best because it has 3 ions dissolved instead of 1 or 2 like the others.
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Which two changes would make this reaction favor the formation of products? 2502 +02= 2503 + energy A. Raising the temperature B
Alisiya [41]

C. Decreasing the temperature

D. Raising the pressure​

<h3>Further explanation</h3>

Given

Reaction

2SO₂+O₂⇔2SO₃+energy

Required

Changes to  the formation of products

Solution

The formation of SO₃ is an exothermic reaction (releases heat)

If the system temperature is raised, then the equilibrium reaction will reduce the temperature by shifting the reaction in the direction that requires heat (endotherms). Conversely, if the temperature is lowered, then the equilibrium shifts to a reaction that releases heat (exothermic)  

While on the change in pressure, then the addition of pressure, the reaction will shift towards a smaller reaction coefficient  

in the above reaction: the number of coefficients on the left is 3 (2 + 1) while the right is 2

As the temperature decreases, the equilibrium will shift towards the exothermic reaction, so the reaction shifts to the right towards SO₃( products-favored)

And increasing the pressure, then the reaction shifts to the right SO₃( products-favored)⇒the number of coefficients is greater

4 0
3 years ago
Read 2 more answers
one of the characteristics of living things is that they respond to external changes in their environment so that their internal
velikii [3]
They do this in order to survive their new environment. If they didn't adapt, then they would die!
7 0
3 years ago
The number of protons in a neutral atom is balanced by an equal number of
anastassius [24]
There would be an equal amounts of ELECTRONS.

In order for the atom to be neutral it would imply that the number of protons (positive particles) and the number of electrons (negative particles) are equal since the neutrons are without charge.
3 0
3 years ago
Answer all with detail please! Easy for those who have completed chemistry courses!
Zina [86]

a) CH2O

each element can be divided by 2

b) BCl3

the molecule is already in it's empirical formula

c) CH4

the molecule is already in it's empirical formula

d)CH2O

each element can be divided by 6

5 0
3 years ago
The chemical equation below shows the reaction between tin (Sn) and hydrogen fluoride (HF). Sn + 2HF mc017-1.jpg SnF2 + H2 The m
Sergio [31]
Tin and Hydrofluoric Acid reacts as shown,

<span>                              Sn  +  2 HF    </span>→    SnF₂<span>  +  H</span>₂

According to Equation,

40.02 g (2 Moles) HF Required  =  <span>1 Mole of Sn for complete Reaction

So,
              40 g of HF will require  =  X Moles of Sn

Solving for X,
                                       X  =  (40 g </span>× 1 Mole) ÷ 40.02 g

                                       X  =  0.999 Moles  ≈  1 Mole
Result:
            40 g 
of HF requires 1 Mole of Tin (Sn) for complete Reaction to produce SnF₂ and H₂.
7 0
3 years ago
Read 2 more answers
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