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3 years ago

Which of these statements about water is true? Which of these statements about water is true?

Biology

2 answers:

ollegr [7]3 years ago

7 0

Answer:

Its molecules are farther apart in the solid state than in the liquid state.

Explanation:

Unlike most other liquids that reduce in volume with decrease in temperatures, when water goes below 4 degrees centigrade, the volume begins to increase. This is due to the way the water molecules arrange themselves in ice. Water molecules are polar and align themselves with regards to their dipoles. The partially positive hydrogen ends tend to place themselves some distance between two partially negative oxygen ends of the adjacent molecules. This pushes the molecules farther apart in crystalline (solid) form than in liquid form.

ki77a [65]3 years ago

4 0

Answer:

option 3

Explanation:

i just took the quiz

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timofeeve [1]

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Explanation:

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DedPeter [7]

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3 years ago

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EastWind [94]

Answer:

the complementary nucleotide to adenine.

Explanation:

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3 years ago

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katen-ka-za [31]

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3 years ago

Nuclei with an _____________ number of protons and neutrons possess a property called spin. Nuclear spin can be thought as eithe

andriy [413]

Answer:

Explanation:

$\text{We are to fill in the blanks with the correct words that best suit the blanks}$

$\text{Nuclei with an} \ \mathbf{odd} \ \text{number of protons and neutrons possess a property }$

$\text{called spin. Nuclear spin can be thought as either up or down with the spin }$

$\mathbf{magnetic \ field.}$

$\text{When a molecule is placed in an NMR, a large} \ \mathbf{magnetic} \ \text{field is applied making the }$ $\text{spin states become of unequal energy, with the spin that generates a magnetic field }$ $\text{in the same direction of the applied magnetic field being}\ \mathbf{ lower} \ \text{ in energy. The NMR }$ $\text{then uses} \ \mathbf{ radio \ frequency}\ \text{ to 'flip the spin' of each nuclei, wherein each nuclei will }$ $\text{require a specific energy level of radiation that corresponds to its difference in }$ $\text{energy of spin states, this is often called the nuclei's}\ \ \mathbf{resonance } \ \text{frequency, }$ $\text{which is measured by the NMR and translated to teh final spectra.}$

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3 years ago