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2 years ago

Which of these is an example of how engineers have affected society?

Chemistry

2 answers:

Levart [38]2 years ago

8 0

You can eliminate A, C, and D almost instantly if you know that engineers are construction workers. The answer is B.

Ann [662]2 years ago

8 0

Answer:

B.The use of piers and beams to build a strong foundation for a house

Explanation:

Foundation engineering falls under geotechnical engineering which uses both soil and rock mechanics to design the foundation structure of any building so as to avoid overloading of the soil. Foundation engineering is important to ensure stability and prevent lateral movement of the building.

Cancer research is done by cell biologist. Medical professionals help to cure sick people. Chemists study galvanic corrosion.

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Photosynthesis is an example of a

liq [111]

Answer:

it is when a plant absorbs the sunlight for food and creates oxogen after

Explanation: example of a plant eating sunlight to get food

4 0

2 years ago

How many molecules of CH4 are in 24.1 g of this compound?

jok3333 [9.3K]

1) find molar mass of CH₄

$=12.01+4(1.01)\\\\=16.05\ g/mol$

2) determine moles of CH₄

$=24.1g\ CH_{4}\ x\ \frac{1\ mol\ CH_{4}}{16.05g\ CH_{4}}\\\\=1.501557632\ mol\ CH_{4}$

3) multiply by avogadro's number

$=1.501557632\ mol\ CH_{4}\ x\ \frac{6.022\ x\ 10^{23}\ molecules\ CH_{4}}{1\ mol\ CH_{4}} \\\\=9.04238006\ x\ 10^{23}\\\\=9.04\ x\ 10^{23}\ molecules\ CH_{4}$

7 0

1 year ago

How have organisms changed over time, according to the fossil record?

Yuri [45]

Answer:

As the world changes, plants and animals change with it. Aside from a few living fossils, the species we see today are very different from species that lived in the past. Thus, the fossil record can be used to show that organisms changed to meet new conditions. This is the result of evolution of species over time.

hope this helps

have a good day :)

Explanation:

6 0

2 years ago

What is the amount of heat required to complete MELT a 200 gram sample of H2O(s)

wolverine [178]

Answer:

66800 J

Explanation:

From the question given above, the following data were obtained:

Mass (m) = 200 g

Heat (Q) required =?

The heat required to melt the 200 g sample of water can be obtained as:

Mass (m) = 200 g

Latent heat of water (L) = 334 J/g

Heat (Q) required =?

Q = mL

Q = 200 × 334

Q = 66800 J

Thus, 66800 J of heat energy is required to melt the sample of water.

8 0

2 years ago

Read 2 more answers

What the wavelength of a light whose frequency is 7.00 x 10^16 Hz

nata0808 [166]

V = c \Lambda
7 x 10^16 = 3 x 10^8 / lambda
lambda = 42.85

7 0

3 years ago