A student observed that the rate of a chemical reaction increased as the temperature of the system increased. Which of the following statements best explains why thermal energy caused an increase in the reaction rate?A. The surface area of the product particles decreased.
B. The collision rate of the reactant particles increased.
C. The concentrations of the reactant particles increased.
D. The concentrations of the product particles decreased.

Answers

Answer 1

Answer: B, The increased thermal energy makes the particles move faster, making more collisions possible.

Answer 2

Answer: The answer is "B. The colllision rate of the reactant particles increased." because as you increase the temperature, the particles move faster and the faster the the particles move, the faster their collision rate.!!!

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Highlights the basic points in lewis and lannngmuir theory of electrovalency

Answers

The correct answer for the question that is being presented above is this one: "Electrovalency is characterized with the transferring of one or more electrons from one atom to another together with the formation of ions and as well as the number of positive and negative charges.

The Lewis and Langmuir theory of electrovalency (and as well as Kossel's) is dealing with Ionic bonds.

Lewis: electron-pair sharing, octet rule, Lewis Symbols or StructureLangmuir: introduced term "covalent" bond, and popularized Lewis's ideas

The Lewis-Langmuir electron-pair or covalent bond is referred as the homopolar bond, where the complete transfer of electrons give rise to ionic, or electrovalent bond (1) through attraction of opposite charges.

Click on the diagram to choose which atom is more reactive.

Answers

Answer:

Second graph is more reactive.

Explanation:

I just did the lesson myself, chose the first graph, and obviously got it wrong.

Therefore I can tell you with 100% certainty that the correct answer is graph #2 in this case. Hope this helps.

The first diagram is the atom that is more reactive

A gas changes directly to a solid during ....fusion
saponification
depositon
decomposition

Answers

The answer is Deposition.

A food product claiming to be sugar free containsA. less than 10 grams of sugar per serving.
B. less than 0.5 grams of sugar per serving.
C. less than 5 milligrams of sugar per serving.
D. less than 2 milligrams of sugar per serving.

Answers

Answer:

A food product claiming to be sugar free contains less than 10 grams of sugar per serving.

Explanation:

There are several sugars, such as lactose (milk), fructose (fruits and honey), maltose (beer), sucrose (table sugar), among others. These can be classified into intrinsic sugar, that is the sugar that is part of the composition of foods such as milk (lactose), vegetables or fruits (fructose) and free sugars, which are those added by manufacturers, consumers or cooks. This last classification includes sugars naturally present in honey, syrups, fruit juices and fruit juice concentrates.

The main difference between them is that eating a large amount of food containing free or added sugar causes a metabolic reaction that increases the risk of being overweight or obese, and of developing diabetes, gout, ulcerative colitis, vascular diseases and caries. However, the consumption of intrinsic sugars does not pose a health risk. Therefore, the recommendation of the World Health Organization is that the daily consumption of free sugars should be reduced to less than 10% of the total caloric intake, that is, to a maximum of 25g of free sugars per day.

A. because thats the health code policy for sugar free

how do two oxygen atoms cancel out each other if they pull in opposite directions and how does the molecule become nonpolar

Answers

An even distribution of electron density across the molecule, which means that the molecule has no distinct positive or negative ends. This lack of polarity makes the molecule symmetrical, and the forces of attraction between individual molecules are weak. Consequently, nonpolar molecules tend to have low boiling points and are generally insoluble in polar solvents.

When two oxygen atoms come together to form an oxygen molecule (O2), they share electrons to form a covalent bond. In this bond, each oxygen atom shares two electrons with the other oxygen atom, creating a stable molecule.

While it is true that the oxygen atoms in O2 molecule are electronegative and pull on the shared electrons in opposite directions, the two oxygen atoms are identical in terms of their electronegativity. This means that they pull on the electrons with equal strength, resulting in a balanced distribution of charge across the molecule. As a result, the molecule becomes nonpolar.

Click the below link, to learn more about Oxygen Atoms bond:

brainly.com/question/12442489

#SPJ11

a student used 10 mL water instead of 30 mL for extraction of salt from mixture. How may this change the percentage of NaCl extracted?

Answers

It will be extracted only 1/3 of NaCl less in 10 mL of water than in 30 mL of water.

If it is known that solubility of NaCl is 360 g/L, let's find out how many NaCl is in 30 mL of water:

360 g : 1 L = x g : 30 mL

Since 1 L = 1,000 mL, then:
360 g : 1,000 mL = x g : 30 mL

Now, crossing the products:
x · 1,000 mL = 360 g · 30 mL
x · 1,000 mL = 10,800 g mL
x = 10,800 g ÷ 1,000
x = 10.8 g

So, from 30 mL mixture, 10.8 g of NaCl could be extracted.

Let's calculate the same for 10 mL water instead of 30 mL.

360 g : 1 L = x g : 10 mL

Since 1 L = 1,000 mL, then:
360 g : 1,000 mL = x g : 10 mL

Now, crossing the products:
x · 1,000 mL = 360 g · 10 mL
x · 1,000 mL = 3,600 g mL
x = 3,600 g ÷ 1,000
x = 3.6 g

So, from 10 mL mixture, 3.6 g of NaCl could be extracted.

Now, let's compare:
If from 30 mL mixture, 10.8 g of NaCl could be extracted and from 10 mL mixture, 3.6 g of NaCl could be extracted, the ratio is:
3.6/10.8 = 1/3

Therefore, it will be extracted only 1/3 of NaCl less in 10 mL of water than in 30 mL of water.

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PLS HELP What is chemistry?