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3 years ago

7. Mount Saint Helens is an example of a

Chemistry

2 answers:

goldenfox [79]3 years ago

8 0

Answer:

A. Composite.

Explanation:

Also know as a stratovolcano. Composite volcanoes tend to erupt explosively and pose considerable danger to nearby life and property.

shtirl [24]3 years ago

6 0

Answer:

A. Composite

Explanation:

Mount St. Helens is an example of a composite or stratovolcano. These are explosive volcanoes that are generally steep-sided, symmetrical cones built up by the accumulation of debris from previous eruptions and consist of alternating layers of lava flows, volcanic ash and cinder.

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(Immediate) Which structural formula represents a nonpolar molecule?

Vilka [71]

Answer:

What is going on I am scared

Explanation:

4 0

3 years ago

Read 2 more answers

A solution is made by mixing equal masses of methanol, CH4O, and ethanol, C2H6O. Determine the mole fraction of each component t

Serggg [28]

Answer: mole fraction of methanol = 0.590

mole fraction of ethanol = 0.410

Explanation:

We are given:

Equal masses of methanol $CH_4O$ and ethanol $C_2H_6O$ are mixed.

let the mass be x g.

Calculating the moles of methanol in the solution, by using the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}=\frac{xg}{32.04g/mol}$

Calculating the moles of ethanol in the solution, by using the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}=\frac{xg}{46.07g/mol}$

To calculate the mole fraction of methanol, we use the equation:

$\chi_{methanol}=\frac{n_{methanol}}{n_{methaol}+n_{ethanol}}$

$\chi_{methanol}=\frac{\frac{xg}{32.04g/mol}}{\frac{xg}{32.04g/mol}+\frac{xg}{46.07g/mol}}=0.590$

To calculate the mole fraction of ethanol, we use the equation:

$\chi_{ethanol}=\frac{n_{ethanol}}{n_{methaol}+n_{ethanol}}$

$\chi_{ethanol}=\frac{\frac{xg}{46.07g/mol}}{\frac{xg}{32.04g/mol}+\frac{xg}{46.07g/mol}}=0.410$

Thus mole fraction of methanol is 0.590 and mole fraction of ethanol 0.410 in three significant figures.

5 0

3 years ago

The secondary structure of a protein is distinct from the tertiary structure of a protein mainly because the secondary structure

mixer [17]

Answer:

False

Explanation:

The primary structure of a protein refer to the amino acid sequence. The secondary structure of a protein refer to the alpha helices, beta sheets and turns, while the tertiary structure refer to folding of the sheets due to hydrogen bonding or other bonding interaction between them.

4 0

3 years ago

Compute the product of P.V.<br><br> The Awnser is 51.3

Soloha48 [4]

The answer is 51.3 ...

6 0

3 years ago

How many Liters are there in 51. 300 cm? (11 = 1000 cm)

Black_prince [1.1K]

Answer:

4,572.67

Explanation:

11 divided by 1000= 90.90

44= 11x

x=4

4 x 11= 4000

44-51.300=6.300

6.300 x 90.90=572.67

4000 + 572.67 = the answer

7 0

3 years ago