New cells are created from A) matter. B) energy. C) other cells. D) non-living matter.

The best description of organelles in a cell is that they must work together and have coordinated activities. Each organelle has a unique role that contributes to the cell's overall function, much like organs in a body.

The question asks which statement best describes the organelles in a cell. The correct answer is B. Organelles must work together and their activities must be coordinated. This is because in a cell, each organelle has a specific function, and they all contribute to the overall health and functionality of the cell, much like the organs in our body. The nucleus acts as the control center, containing DNA and orchestrating the activities of the cell. Cytosol provides the medium for biochemical reactions. The cytoskeleton supports the structure and scaffolds the organelles. Cells communicate with each other and their environment to respond to stimuli and maintain homeostasis. This coordination and communication are essential for the survival and operation of both single-celled and multicellular organisms.

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Final answer:

The reactions listed are examples of redox reactions involving iron and various reagents, demonstrating the oxidation and reduction processes in iron chemistry when FeO reacts with HNO3 and other similar compounds.

Explanation:

The provided information suggests a variety of chemical reactions involving iron compounds reacting with different reagents. For instance, when FeO reacts with HNO3, a typical reaction might involve the iron(II) oxide (FeO) being oxidized to iron(III) nitrate, while nitric acid acts as the oxidizing agent and gets reduced in the process. Other reactions listed include the transformation of iron in different oxidation states, the reaction of iron compounds with bases and acids, and the decomposition of iron salts under heat.

These reactions represent a class of redox reactions, where transfer of electrons occurs, indicating changes in the oxidation states of the involved species. Examples given such as Fe being heated in air (oxidation), and the interaction of Fe(NO3)2 with HNO3 in the presence of air show the complexity and variety of iron chemistry.

Answer: Naming Compounds and Writing Formulas

1. The elements most likely to form more than one type of ion are the____ Transition Metals

2. The name iron (ll) indicates that a compound contains___ Iron ions with a 2+ charge

3. Alkali metals, alkaline earth metals, and aluminum all form ions with positive charges equal to___ The group number

4. In the name carbon dioxide, the prefix of the second word indicates that molecule of carbon dioxide contains___Two oxygen atoms

Explanation:

pH = 6.0 = - log [H3O+] taking anti log both sides we have 10^-6 = [H3O+]  [OH^-] = Kw/[H3O+] = 1x 10^-14/10^-6 = 10^-8.

pH is a numerical indicator of how acidic or basic aqueous or other liquid solutions are. The phrase, which is frequently used in chemistry, biology, and agronomy, converts the hydrogen ion concentration, which typically ranges between 1 and 1014 gram-equivalents per liter, into numbers between 0 and 14.

The hydrogen ion concentration in pure water, which has a pH of 7, is 107 gram-equivalents per liter, making it neutral (neither acidic nor alkaline). A solution with a pH below 7 is referred to as acidic, and one with a pH over 7 is referred to as basic, or alkaline.

The first employed the measurement to describe the hydrogen ion concentration of an aqueous solution, expressed in equivalents per liter.

Therefore, pH = 6.0 = - log [H3O+] taking anti log both sides we have 10^-6 = [H3O+]  [OH^-] = Kw/[H3O+] = 1x 10^-14/10^-6 = 10^-8.

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Answer:

Contour Plowing

Explanation:

Chlorine Gas by itself is dangerous

Many compounds we use often contain chlorine, but we are still alive. When chlorine is part of a compound, such as table salt (NaCl) it remains fairly unreactive. It becomes dangerous when it's in the form Cl2. This is chlorine gas and it is quite reactive.

A mineral must be naturally occurring, inorganic, solid, have a definite chemical composition, and an ordered internal structure. Coal and glass marbles are not minerals because coal comes from organic matter and glass marbles lack crystal structure and are not naturally occurring.

A substance must have five distinct characteristics to be considered a mineral. These characteristics include 1) being naturally occurring, 2) being inorganic, 3) being solid, 4) having a definite chemical composition, and 5) having an ordered internal structure. Coal is not considered a mineral because it comes from organic matter (plant remains). Glass marbles are not minerals because they do not have a crystal structure, and they are man-made, not naturally occurring.

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