The answer is “D Tissue”
Explanation:
when you workout you tear down your muscles (tissue) and after your done working out your body rebuilds tissue
hope this helps
Answer:
Hydrogen ions are spontaneously generated in pure water by the dissociation (ionization) of a small percentage of water molecules into equal numbers of hydrogen (H+) ions and hydroxide (OH–) ions. The hydroxide ions remain in solution because of their hydrogen bonds with other water molecules; the hydrogen ions, consisting of naked protons, are immediately attracted to un-ionized water molecules and form hydronium ions (H30+). By convention, scientists refer to hydrogen ions and their concentration as if they were free in this state in liquid water.
2
H
2
O
⇋
H
3
O
+
+
OH
−
2H2O⇋H3O++OH−
The concentration of hydrogen ions dissociating from pure water is 1 × 10-7 moles H+ ions per liter of water. The pH is calculated as the negative of the base 10 logarithm of this concentration:
pH
=
−
l
o
g
[
H
+
]
pH=−log[H+]
The negative log of 1 × 10-7 is equal to 7.0, which is also known as neutral pH. Human cells and blood each maintain near-neutral pH.
pH Scale
The pH of a solution indicates its acidity or basicity (alkalinity). The pH scale is an inverse logarithm that ranges from 0 to 14: anything below 7.0 (ranging from 0.0 to 6.9) is acidic, and anything above 7.0 (from 7.1 to 14.0) is basic (or alkaline ). Extremes in pH in either direction from 7.0 are usually considered inhospitable to life. The pH in cells (6.8) and the blood (7.4) are both very close to neutral, whereas the environment in the stomach is highly acidic, with a pH of 1 to 2.
<span>There are many different kinds of clouds all around us. Clouds come in diverse shapes and colors. Some clouds are fluffy and others are wispy. Some clouds float high in the sky and others sit low on the ground. Some clouds warn of storms and other clouds tell of fair weather. Compare and contrast the characteristics of different types of clouds through vibrant photographs.</span>
Answer:
Explanation:
To convert from moles to atoms, we must use Avogadro's Number. <u>Avogadro's Number</u>
- 6.022*10²³
- The number of particles (atoms, molcules, ions, etc.) in 1 mole.
- In this case, it is the number of atoms of lead.
1. Set up ratio
We can use Avogadro's Number as a fraction or ratio.
2. Convert atoms to moles
Multiply the given number of atoms by the ratio.
Flip the fraction so that the atoms of lead can cancel each other out.
3. Round
The original measurement of 4.75 had 3 significant figures (4, 7, and 5).
We must round our answer to 3 sig figs, which is the hundredth place for the number found.
The 7 in the thousandth place tells us to round the 8 up to a 9 in the hundredth place.
There are <u>7.89*10⁻⁴ moles of lead</u> in 4.75*10²⁰ atoms of lead.
Elemental sulfur occurs as octatomic molecules, 63.2 g F2 are needed to react completely with 17.8 g S8 to produce SF6 .
<h3>What is octatomic molecules?</h3>
When stable under normal temperature and pressure circumstances, an octatomic element is a chemical element that has eight atoms arranged in a group. Sulfur, symbol S8, is the classic example, but red selenium is also an octatomic element that is stable at ambient temperature.
A molecule with eight sulfur atoms has a puckered ring or crown structure. Sulfur is in an octet state when it contains two more electrons than the six in its outermost shell. Sulfur has an atomic number of 16 and an electrical configuration of 2, 8, 6.
Other elements (S, Se, and Te) exist as octatomic solids while oxygen is a diatomic gas at normal temperature.
To learn more about octatomic molecules from the given link:
brainly.com/question/23921436
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