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4 years ago

Isotopes of an element have different numbers of?

Chemistry

1 answer:

Gre4nikov [31]4 years ago

6 0

Answer:

Same number of protrons, and different number of neutrons :)

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Bacteria cells are different from plant and animal cells because they don't have what???!

icang [17]

Plants and animals are multi-cellular organisms composed of eukaryotic cells, while bacteria are single-cell prokaryotic organisms. Each eukaryotic cell of a plant or animal includes a central nucleus containing DNA and membrane-bound organelles, such as endoplasmic reticulum and mitochondria. A bacterial cell has no nucleus or membrane-bound organelles.

hope it helps! :)

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3 years ago

Read 2 more answers

Which conversion factor would you use to correctly calculate the number of moles in 25.0 g of the element titanium (ti) ?

Gennadij [26K]

To convert grams to moles, you need molar mass.

according to the periodic table, the molar mass of 47.88 g/mol. answer is C

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3 years ago

Which of the following will most likely happen if the pancreas does not produce sufficient glucagon?

Zielflug [23.3K]

Answer: 1 Blood sugar will decrease because glucagon increased blood sugar when it falls too low

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3 years ago

What is happening to the energy storage molecules in the plants and humans in the space station?

rosijanka [135]

Answer:

Answer is in photo

Explanation:

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3 years ago

Identify all correct statements about the ionization of water. Dissociation of water produces equal numbers of OH- and H+. Disso

julsineya [31]

Answer:

Correct statements are: Dissociation of water produces equal numbers of OH- and H+. Water ionizes to form hydroxide and hydronium ions. Dissociation of water is reversible.

Explanation:

(True) Dissociation of water produces equal numbers of OH- and H+.

Water molecules are formed by one ion of OH- and one ion of H+ (which adds up to $H_{2}O$ ), son when it dissociates (brakes down), for each molecule of water, one ion of OH- and one ion of H+ is obtained.

(False) Dissociation of water produces equal masses of OH- and H+.

One ion of OH- is formed by one atom of oxygen and one atom of hydrogen, which are heavier than the lone atom of hydrogen in the H+ ion, which makes the mass of OH- bigger than the mass of H+ on each water molecule.

(True) Water ionizes to form hydroxide and hydronium ions.

Hydroxide is the name of the OH- ion and hydronium is the name of the H+ ion.

(False) Water ionizes to form peroxide and hydronium ions.

Hydrogen Peroxide formula is H2O2, which is different from water and from water's ions OH- and H+. Hydrogen peroxide is usually obtained from an organic compound called anthraquinone, not from water dissociation.

(False) Dissociation of water is not reversible.

Hydronium and hydroxide ions can be reunited to form water molecules. Actually, in every portion of water there is a very small amount of hydronium and hydroxide ions constantly turning into water and water dissociating itself into hydronium and hydroxide (reversed dissociation), which keeps the water in equilibrium.

(True) Dissociation of water is reversible.

As explained above.

6 0

3 years ago