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Harlamova29_29 [7]
3 years ago
9

A stick of butter is melted in a saucepan. As it continues to cook, the butter turns brown. What changes have occurred?

Chemistry
2 answers:
zlopas [31]3 years ago
6 0

Answer:

Assuming that the butter is already a liquid, it is a chemical change in which the milk solids of the butter oxidize.

Explanation:

I hope this helps :)

adelina 88 [10]3 years ago
3 0
Physical change! I believe
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Write a hypothesis statement about the relationship between the number of mushrooms and the concentration of heavy metals in the soil ...


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What does DNA instructions for making what
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Answer:DNA contains the instructions needed for an organism to develop, survive and reproduce. To carry out these functions, DNA sequences must be converted into messages that can be used to produce proteins, which are the complex molecules that do most of the work in our bodies.

Explanation:

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Is nitrogen and cobalt and carbon a mixture or pure substance
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If an equivalent (eq) is defined as a mole of charge, what is the concentration of ca2 in blood plasma in eq if its concentratio
diamong [38]

The concentration of ca 2 in blood plasma in equivalent if its concentration is 0.0080.

Concentration means the amount of or parts in terms of the alternative components. For acid–base reactions, the equivalent weight of an acid or base is the mass which materials or reacts with one mole of hydrogen

In chemistry, equal weight (additionally known as gram equal is the mass of 1 equivalent, that is the mass of a given substance as a way to integrate with or displace a fixed amount of any other substance. The equivalent weight of an detail is the mass which combines with or displaces 1.008 gram of hydrogen or eight. Zero grams of oxygen or 35.five grams of chlorine. those values correspond to the atomic weight divided through the usual valence for oxygen as example that is sixteen.

Charge on one Ca ​​​​2+  ion = + 2 .

Concentration of calcium ion = 0.0040M

⇒ Concentration of Ca ​​​​​2 +  in blood plasma = 0.0040 × 2

=  0.0080 equivalent  Ca ​​​​​2                  answer

Learn more about concentration here :- brainly.com/question/14469428

#SPJ4

4 0
2 years ago
Consider: CO(g) + Cl2 (g) ⇌ COCl2 (g) Kc = 1.2×103 at 395 °C. If the equilibrium concentrations of Cl2 and COCl2 are the same at
ad-work [718]

Answer : The equilibrium concentration of CO in the reaction is, 8.3\times 10^{-4}M

Explanation :

The given chemical reaction is:

CO(g)+Cl_2(g)\rightleftharpoons COCl_2(g)

The expression for equilibrium constant is:

K_c=\frac{[COCl_2]}{[CO][Cl_2]}

As we are given:

Concentration of Cl_2 at equilibrium = Concentration of COCl_2

So,

K_c=\frac{[Cl_2]}{[CO][Cl_2]}

K_c=\frac{1}{[CO]}

1.2\times 10^3=\frac{1}{[CO]}

[CO]=8.3\times 10^{-4}M

Therefore, the equilibrium concentration of CO in the reaction is, 8.3\times 10^{-4}M

4 0
4 years ago
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