Answer:
The correct answer is option 3.
Explanation:
Whenever there is a formation of bond between 2 atoms energy is released. This energy release is due to stability gained by the atoms after the formation of a bond that is why extra energy is released as a heat into surroundings. Exact process is occurring when 2 bromine atoms form bond to give molecule of bromine.
Whenever there is a dissociation of bond between 2 atoms energy is given. The energy provided externally so as to break the stable bond present between the atoms.
To calculate this, we need the molar mass of water which is obtaine by adding the molar masses of the elements. For H2O, the molar mass is 18.02g/mol. Then, from the amount given which is 1 gram of H2O we divide the molar mass which yields to 0.06 mol of water.
by a lowercase letter. This tells you the types of elements in the compound.
Answer:
Elements
Explanation:
The elements which are represented by a single uppercase letter, or represented by an uppercase letter followed by a lowercase letter. This tells you the types of elements in the compound.
Elements are one of the simplest chemical substances that cannot be decomposed in a chemical reaction or by any chemical means. They are made up of small indivisible particles called atoms, all having the same number of protons.
Chemical symbols which can be single uppercase or one uppercase followed by a lowercase letter, are used in Chemistry to represent elements. They are used in the composition of compounds. For example, 'H' for Hydrogen and 'Ca' for Calcium.
In Chemistry, elements are represented by one or two letters. The first letter is always uppercase and the second letter, if present, is lowercase. These are known as chemical symbols and they correspond to the elements in the Periodic Table. For instance, the symbol for Hydrogen is H, and for Calcium it's Ca. These symbols are used to denote elements in chemical compounds. For example, water (H2O) is a compound consisting of Hydrogen and Oxygen.
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by adding valence electrons
by adding or removing protons
by adding or removing neutrons
Answer: by adding or removing neutrons
Explanation:
To know the end point we use phenolphthalein as indicator. Therefore, endpoint is point in which indicator change the color, and equivalence point is point in which there is equal amount of two chemicals.
Titration is a technique by which we know the concentration of unknown solution using titration of this solution with solution whose concentration is known. To know the end point we use phenolphthalein as indicator. End point is a point where completion of reaction happen.
Endpoint is point in which indicator change the color, and equivalence point is point in which there is equal amount of two chemicals. Endpoint is after Equivalence point.
Therefore, endpoint is point in which indicator change the color, and equivalence point is point in which there is equal amount of two chemicals.
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Answer:
Endpoint is point in which indicator change the color, and equivalence point is point in which there is equal amount of two chemicals. Endpoint is after Equivalence point.
Explanation:
Answer:
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Lipid-soluble hormones pass through the cell membrane and directly interact with the cell's DNA, while water-soluble hormones bind to surface receptors, triggering intracellular signaling pathways.
In the field of Biology, the principal difference between lipid-soluble and water-soluble hormones lies in their mechanism of action. Lipid-soluble hormones, like steroid hormones, can easily pass through the cell membrane and interact directly with the cell's DNA to influence gene transcription. On the other hand, water-soluble hormones cannot cross the cell membrane due to their polarity. Instead, these hormones (such as peptides and amines) bind to receptors located on the cell's surface, triggering a series of intracellular events or signaling pathways that lead to a cellular response.In contrast, water-soluble hormones cannot passively cross the cell membrane due to their hydrophilic nature. They bind to specific receptors on the cell surface, triggering a cascade of intracellular signaling events through secondary messengers, such as cAMP or calcium ions. These signaling pathways ultimately result in the desired cellular response.
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