CHEMISTRY HIGH SCHOOL

Which equation represents the process of cellular respiration?

Answers

Answer 1
Answer:

Answer:

C6H12O6 + 6O2 -> 6CO2 + 6H2O + 38ATP

Explanation:

glucose + oxygen gas -> carbon dioxide + water + ATP
Answer 2
Answer:

Answer:

C 6 H 12 O 6 + 6 O 2 --> 6 CO 2 + 6 H 2 O + ATP is the complete balanced chemical formula for cellular respiration.

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Which pair of compounds will form a buffer in aqueous solution?

Mr. Fuller assigned his science class a lab comparing the masses of objects to the nearest gram using a balance. The mass of a paper clip is about 1 gram. How many paper clips will it take to balance the scale, if it is determined that a 1 centimeter cube of gold has the mass of 19.3 grams?

Answers

Like about 15 paper clips to balance the scale

Answer:

C)  19

Explanation:

took the test

Arrange the following elements in order of increasing atomic radius : Rb , K , Na , Li

Answers

Generally, atomic radii have this property on the periodic table: as you go down or left, the radius of an atom gets larger. 

With this logic, let's apply this to the problem above. Li is on the highest part of the table compared to the other elements. Below it is Na, then K, then Rb. From our rule, we know that as we go down on the table, the atomic radius gets larger. 

Thus, Li has the smallest radius, and Rb has the largest radius.

FINAL ANSWER: Li, Na, K, Rb

Final answer:

The order of increasing atomic radius for the elements Li, Na, K, and Rb is Li

Explanation:

The arrangement of the following elements in increasing atomic radius: Li, Na, K, and Rb indicates that the atomic radius increases as we move down a group in the periodic table. This group of elements, Li, Na, K, and Rb, are all alkali metals and exhibit similar chemical behaviors. As the atomic number or Z increases, the atomic radius also increases. For example, Lithium (Li) has an atomic number of 3, Sodium (Na) 11, Potassium (K) 19, and Rubidium (Rb) 37. As we move down the group from Li to Rb, both Z and the atomic radius increase.

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In which sample of water do the molecules have the highest average kinetic energy?(1) 20. mL at 100.°C (3) 60. mL at 60.°C
(2) 40. mL at 80.°C (4) 80. mL at 40.°C

Answers

The answer is (1). The question is asking the average kinetic energy. So it does not related with volume. When temperature increases, the kinetic energy will also increase. So the answer should be the highest temperature.

Describe the difference between chronic and acute exposure.

Answers

"Radiation exposure might be short-term or long-lasting. First, think of a medical x-ray exposure where the time of exposure is short—the machine is on and off within a very short period of time. Or think about radioactive materials that naturally occur in our soils; they present us with small amounts of radiation exposure that occur over our lifetime. Depending on the source, time of an exposure can vary—in some cases, the time will be very short, seconds or less, and in other cases it will be occurring continuously over our lifetime. Keep in mind that being exposed to radiation in a short period of time or over a long period of time is no indication of the total radiation dose and, thus, the possible health effects that may occur."

Answer: chronic is long term and severe while acute lasts for a short amount of time.

A solution has which of the following properties

Answers

Answer:

This question is incomplete

Explanation:

A solution is an homogeneous mixture of two or more substances. These substances could be in the same form (as in solid, liquid or gas) or in different forms. Examples of solution in the same phases are

  • Air (all gases): oxygen, nitrogen, carbon dioxide and noble gases
  • Dilute acid solution (all liquid): water and acid
  • NPK fertilizer (all solid): powdered nitrogen,phosphorus and potassium

Examples of solution in different phases are

  • Salt solution: common salt (solid) and water (liquid)
  • Oxygen in water: oxygen (gas) dissolved in water (liquid) which enables survival of aquatic animals
  • Soot floating: soot (solid) and air (gas)

NOTE: Homogeneous mixture is a mixture whose constituents are evenly distributed in the mixture

A solution has a number of unique characteristics. First of all, it has a consistent composition throughout, which denotes that the solute is dispersed uniformly throughout the solvent to produce a homogenous mixture.

Second, the solution is transparent and not turbid because the solute particles do not scatter light. Thirdly, a solution doesn't have discrete layers since the solute has completely dissolved in the solvent. Furthermore, the presence of the solute particles causes the boiling point of the solution to normally be higher than that of the pure solvent. However, because the volume change during dissolution is typically minimal, the density of the solution stays almost the same as that of the pure solvent.

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--The  complete Question is, A solution has what of the properties?--

The function of hydrochloric acid in the gastric juice.

Answers

the function of hydrochloric acid is to melt the food
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