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4 years ago

A few spoonfuls of sugar crystals are mixed thoroughly until dissolved into water. classify this mixture.

1 answer:

8 0

There are two general classifications of mixtures: homogeneous mixture and heterogeneous mixture. Since sugar dissolves in water, this is a homogeneous mixture. In other words, it is called as a solution. Furthermore, there are 3 classifications of solution: unsaturated, saturated and supersaturated. Since only a few are added to the water and all of them dissolved, this is an unsaturated homogeneous mixture.

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2NO + 2H2 ⟶N2 + 2H2O What would the rate law be if the mechanism for this reaction were: 2NO + H2 ⟶N2 + H2O2 (slow) H2O2 + H2 ⟶2

Talja [164]

Answer:

rate = [NO]²[H₂]

Explanation:

2NO + H2 ⟶N2 + H2O2 (slow)

H2O2 + H2 ⟶2H2O (fast)

From the question, we are given two equations.

In chemical kinetics; that is the study of rate reactions and changes in concentration. The rate law is obtained from the slowest reaction.

This means that our focus would be on the slow reaction. Generally the rate law is obtained from the concentrations of reactants in a reaction.

This means our rate law is;

rate = [NO]²[H₂]

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3 years ago

Carmen has a sample of matter. It is clear and smells sour. The sample is also thick but it flows when poured.

Lady bird [3.3K]

Answer:

Explanation:

Answer:

Its a liquid cause it flows

Explanation:

think about it none of the others make sense ice is a solid and its clear

something like a wall can be thick but it doesn't flow

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3 years ago

12. The most common factors that cause chemical reactions to occur are all the following except

ruslelena [56]

Transfer of electrons

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4 years ago

The following list contains some common polyatomic ions. Using the charge on these ions and the idea of valence, predict the for

SSSSS [86.1K]

Answer: $Na_2CO_3$ or Sodium carbonate.

$KMnO_4$ or Potassium permanganate

Sodium ion carries 1 + charge whereas carbonate ion carries overall charge of -2. So for every carbonate ion, two sodium ions combine to balance the charges and thus form a stable compound, $Na_2CO_3$

Potassium ion carries 1 + charge where as permanganate ion carries overall charge of -1. So for every permanganate ion, one potassium ion combines to balance the charges and thus form a stable compound, $KMnO_4$

The predicted formulas are shown in the attached image.

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3 years ago

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A mass of oil is 20 grams and the volume is 55m3. From this information, calculate the density of oil? Write your answer in 2 si

Vikentia [17]

Answer:

0.36363636363m3 ??

8 0

3 years ago

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