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4vir4ik [10]
4 years ago
11

What is true of every water molecule?It is made of two water atoms.It is made of one water atom and one DNA atom.It is made of t

wo hydrogen atoms and one oxygen atom.It is made of one hydrogen atom and two oxygen atoms.
Chemistry
1 answer:
AnnZ [28]4 years ago
8 0
(H2O) which means 2 hydrogen atoms and 1 oxygen 
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An alien civilization has different names and symbols for six elements. Place each element in the correct location in the period
Margarita [4]

Answer:

why whould I know that!!??

Explanation:

3 0
3 years ago
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Label the signals due to ha, hb, and hc in the 1h nmr spectra.
trapecia [35]
Structure along with ¹H-NMR is shown below.

Signal for Hₐ;
                     Based on multiplicity of of the peak, a Singlet peak (the only singlet peak present in spectrum) at 2.2 ppm was assigned to Hₐ. As the methyl group in not coupling with any other proton so it gave a singlet peak.

Signal for Hb;
                     Based on multiplicity of of the peak, a Quartet peak (the only quartet peak present in spectrum) at 2.4 ppm was assigned to Hb. As the methylene group in coupling with methyl group having three protons so it gave a Quartet peak.

Signal for Hc;
                     Based on multiplicity of of the peak, a Triplet peak (the only triplet peak present in spectrum) at 1.1 ppm was assigned to Hc. As the methyle group in coupling with methylene group having two protons so it gave a Triplet peak.

3 0
4 years ago
Some gas molecules move at speeds of 542 meters per second. How fast is this in miles per hour? 542 =? 1h Solve by dimensional a
artcher [175]

Answer:

1212.42\ \text{mph}

Explanation:

We need to convert 542\ \text{m/s} to \text{miles/hour}

1\ \text{mile}=5280\ \text{ft}

1\ \text{ft}=12\ \text{inches}

5280\ \text{ft}=5280\times 12=63360\ \text{inches}

1\ \text{inch}=2.54\ \text{cm}=0.0254\ \text{m}

63360\ \text{inches}=63360\times 0.0254=1609.344\ \text{m}

So

1\ \text{mile}=1609.344\ \text{m}\\\Rightarrow 1\ \text{m}=\dfrac{1}{1609.34}\ \text{miles}

1\ \text{hour}=60\times 60\ \text{seconds}\\\Rightarrow 1\ \text{s}=\dfrac{1}{3600}\ \text{hour}

542\ \text{m/s}=\dfrac{\dfrac{542}{1609.34}}{\dfrac{1}{3600}}=1212.42\ \text{mph}

The speed of the gas molecules is 1212.42\ \text{mph}.

4 0
3 years ago
explain why metals conduct electricity in their solid forms but ionic compounds do not. you may use a picture to support your an
deff fn [24]

Explanation:

Ionic solids are defined as the solids in which atoms of opposite charge are held together by strong forces of attraction. As a result, in solid state these atoms are not present in free state.

Hence, they cannot move as ions from one place to another. On the other hand, metals are able to conduct electricity because of the presence of free electrons in it.

As we know that electricity is the flow of ions or electrons from one place to another. Therefore, metals are able to conduct electricity in their solid state.

7 0
3 years ago
Rainfall is an abiotic factor. If rainfall in an ecosystem decreases, what happens to the amount of vegetation?
natali 33 [55]

Answer:

B. The amount of vegetation decreases.

Explanation:

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4 0
3 years ago
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